experiment
An experiment is like a special game scientists play. They try something new to learn how things work.
Imagine you want to know what happens if you water a plant with juice instead of water. You can do an experiment!
You give juice to one plant and water to another. Then you watch to see what happens.
This helps you learn new things. Scientists do many experiments to understand the world.
An experiment is like a special game scientists play to learn new things. They try different actions to see what happens. For example, if you want to know which plant grows taller, you could put one in the sun and one in the shade. This is an experiment! Scientists do many experiments to understand the world around us. It's how they find answers to their questions.
An experiment is a controlled scientific procedure undertaken to prove or disprove a hypothesis, or to test the efficacy of something previously untried. It is a systematic inquiry that involves manipulating one or more variables to determine their effect on an outcome. Typically, experiments are conducted in a laboratory setting, although they can also occur in natural environments.
The results of an experiment provide empirical evidence that can lead to new discoveries, refine existing theories, or validate practical applications. Careful planning, execution, and analysis of data are crucial for ensuring the reliability and validity of an experiment's findings. This rigorous approach distinguishes an experiment from casual observation or speculation, making it a cornerstone of scientific methodology and advancement across various fields of study.
An experiment, at a C1 level, refers to a systematic procedure carried out to support, refute, or validate a hypothesis. It typically involves controlled conditions to observe the effects of varying one or more factors.
The methodology often includes designing a study, collecting empirical data, and analyzing results to draw conclusions about cause-and-effect relationships or to explore new phenomena.
Experiments are fundamental to scientific inquiry across various disciplines, ranging from physics and chemistry to psychology and medicine, serving as a cornerstone for advancing knowledge.
The rigor of an experimental design, including randomization and blinding where appropriate, is crucial for ensuring the validity and reliability of the findings.
An experiment, at a C2 level of understanding, transcends a mere scientific test; it embodies a rigorously designed empirical inquiry aimed at validating or refuting a hypothesis through controlled observation and manipulation of variables. It is an intricate process, often iterative, involving meticulous planning, execution, and critical analysis of data to discern causal relationships or systemic behaviors. The outcomes of such endeavors contribute significantly to the advancement of theoretical frameworks and practical applications across diverse disciplines. Ultimately, an experiment serves as a cornerstone of the scientific method, driving discovery and refinement of knowledge.
§ Understanding 'Experiment'
- DEFINITION
- An 'experiment' is a special kind of test. People do experiments to learn new things. For example, if you want to know how plants grow, you might do an experiment. You change one thing, like how much water a plant gets, and then you watch what happens. It's a way to try out an idea to see if it's true.
When we use the word 'experiment' as a noun, we are talking about the test itself. It's an activity where you carefully follow steps to observe a result. This is very common in science. Think about a science class: students often do experiments to understand how things work in the world around them.
§ Who uses 'experiment' and why?
Many different people use the word 'experiment' and perform experiments. Here are some examples:
- Scientists: Scientists are perhaps the most common people who do experiments. They use experiments to discover new medicines, understand space, or create new technologies. They follow very strict steps to make sure their results are accurate.
- Students: In schools, especially in science classes, students do experiments to learn about science. These experiments help them understand theories and see scientific principles in action. For example, mixing chemicals in a lab or observing how different types of soil affect plant growth are experiments.
- Cooks or Chefs: Sometimes, even in a kitchen, people 'experiment' with recipes. A chef might try a new ingredient or a different way of cooking to see if it makes the dish taste better. While not a scientific experiment, it shares the idea of trying something new to see the outcome.
- Engineers: When engineers design a new bridge or a new car, they often conduct experiments to test the strength of materials or the efficiency of a design before building the final product.
The main reason people do experiments is to answer questions or solve problems. They want to find out: 'What will happen if...?' or 'Is this idea true?'
§ Examples of 'experiment' in sentences
The science teacher showed us a cool experiment today.
Scientists are doing an experiment to find a cure for the disease.
My brother tried a cooking experiment, and the cake tasted very strange!
In these examples, 'experiment' refers to a specific test or activity. It's a countable noun, meaning you can have 'one experiment,' 'two experiments,' and so on.
§ Where you actually hear this word — work, school, news
The word "experiment" is very common, especially if you are learning about science or frequently read news related to scientific discoveries. Understanding its context can help you grasp its meaning more deeply.
§ In a School Setting
In schools, especially in science classes like chemistry, biology, or physics, the word "experiment" is used all the time. Students perform experiments to understand scientific principles better. They follow specific steps to observe results and draw conclusions.
Today in class, we will conduct an experiment to see how plants grow in different types of soil.
The science teacher asked us to write a report on the results of our latest experiment.
- Context Hint
- Look for keywords like 'science class,' 'laboratory,' 'results,' or 'scientific method' to understand that 'experiment' is being used in an educational context.
§ In a Work Setting (Science and Research)
For professionals working in scientific fields, research and development, or medicine, "experiment" is a core part of their daily vocabulary. Scientists perform experiments to discover new medicines, develop new technologies, or understand complex natural phenomena.
The team of chemists designed a new experiment to test the properties of the new material.
Before releasing the new drug, pharmaceutical companies must conduct many experiments to ensure its safety and effectiveness.
- Associated Terms
- When heard in a work context, you might also hear terms like 'research,' 'clinical trial,' 'data analysis,' or 'hypothesis.'
§ In the News
News reports frequently use the word "experiment" when discussing scientific breakthroughs, medical studies, or technological advancements. This helps the public understand how new knowledge is gained.
Scientists have conducted a new experiment that could lead to a cure for the disease, according to a recent news report.
A groundbreaking experiment in quantum physics was announced today, exciting the scientific community.
- Where to find it
- You will often find "experiment" in articles or broadcasts related to science news, health updates, technology innovations, or environmental studies.
§ Everyday Usage
While primarily scientific, "experiment" can also be used in a more general sense to mean trying something new or different to see what happens. This is less formal but still conveys the idea of testing something out.
- Trying a new recipe might be called a cooking experiment.
- A new teaching method in a classroom could be an educational experiment.
In summary, whether you are in a school, at work in a scientific field, or just keeping up with the news, the word "experiment" signals that a structured test is being performed to gain knowledge or confirm an idea. Pay attention to the surrounding words to understand the specific nature and scale of the experiment being discussed.
按水平分级的例句
The students conducted an experiment to observe the effects of different fertilizers on plant growth.
Los estudiantes realizaron un experimento para observar los efectos de diferentes fertilizantes en el crecimiento de las plantas.
Here, 'conducted an experiment' is a common collocation.
Before launching the new product, the company decided to run an experiment to test its market appeal.
Antes de lanzar el nuevo producto, la empresa decidió realizar un experimento para probar su atractivo en el mercado.
'Run an experiment' is another common collocation, similar to 'conduct an experiment'.
The scientist designed a complex experiment to prove his hypothesis about the origins of the universe.
El científico diseñó un experimento complejo para probar su hipótesis sobre los orígenes del universo.
'Designed an experiment' refers to the planning stage.
The results of the experiment were surprising and led to new questions for further research.
Los resultados del experimento fueron sorprendentes y llevaron a nuevas preguntas para futuras investigaciones.
'Results of the experiment' is a common phrase to discuss the outcome.
It's important to control all variables in an experiment to ensure accurate and reliable findings.
Es importante controlar todas las variables en un experimento para asegurar hallazgos precisos y confiables.
'Control variables' is a key concept in scientific experimentation.
She felt nervous about presenting her experiment's findings at the science fair.
Ella se sentía nerviosa al presentar los hallazgos de su experimento en la feria de ciencias.
'Experiment's findings' uses the possessive form to indicate ownership of the results.
The children enjoyed their first chemistry experiment, watching the colors change.
Los niños disfrutaron de su primer experimento de química, viendo cómo cambiaban los colores.
'Chemistry experiment' specifies the type of experiment.
We need to repeat the experiment several times to confirm the consistency of the data.
Necesitamos repetir el experimento varias veces para confirmar la consistencia de los datos.
'Repeat the experiment' is essential for validating scientific results.
The physicist's groundbreaking experiment at CERN unequivocally confirmed the existence of the Higgs boson, revolutionizing our understanding of fundamental particles.
Fizikçinin CERN'deki çığır açan deneyi, Higgs bozonunun varlığını kesin olarak doğrulayarak temel parçacıklar hakkındaki anlayışımızı devrim niteliğinde değiştirdi.
Here, 'experiment' is used in a formal scientific context, referring to a complex and significant test. 'Unequivocally confirmed' emphasizes the definitive nature of the results.
Her latest culinary experiment, a fusion of molecular gastronomy and traditional Japanese cuisine, pushed the boundaries of flavor and texture, garnering critical acclaim.
Moleküler gastronomi ile geleneksel Japon mutfağının birleşimi olan son mutfak deneyi, lezzet ve doku sınırlarını zorlayarak büyük beğeni topladı.
In this sentence, 'experiment' is used metaphorically to describe a creative endeavor, specifically in cooking. 'Pushed the boundaries' highlights innovation and novelty.
The social psychologist devised an elaborate experiment to observe bystander intervention in various urban settings, carefully controlling for extraneous variables.
Sosyal psikolog, çeşitli kentsel ortamlarda seyirci müdahalesini gözlemlemek için özenle tasarlanmış bir deney geliştirdi ve dış değişkenleri dikkatlice kontrol etti.
'Elaborate experiment' suggests a meticulously planned and complex study. 'Carefully controlling for extraneous variables' is a technical term in research methodology.
Despite initial setbacks, the pharmaceutical company persevered with their clinical experiment, hoping to develop a novel treatment for a debilitating autoimmune disease.
Başlangıçtaki aksaklıklara rağmen, ilaç şirketi klinik deneylerine devam etti, zayıflatıcı bir otoimmün hastalık için yeni bir tedavi geliştirmeyi umarak.
This example uses 'clinical experiment,' a specific type of research involving human subjects. 'Persevered with' implies sustained effort despite difficulties.
The artistic collective's latest installation was an immersive experiment in sensory deprivation, challenging viewers' perceptions of reality through light and sound.
Sanatçı kolektifinin son enstalasyonu, ışık ve ses aracılığıyla izleyicilerin gerçeklik algılarını zorlayan, duyusal yoksunluk üzerine sürükleyici bir deneydi.
Here, 'experiment' refers to an artistic undertaking that explores new forms or experiences. 'Immersive' and 'sensory deprivation' describe the nature of the artistic work.
Critics lauded the director's bold experiment with non-linear narrative, a cinematic approach that fragmented time and perspective to profound effect.
Eleştirmenler, yönetmenin doğrusal olmayan anlatımla yaptığı cesur deneyi övdü; bu sinematik yaklaşım, zamanı ve perspektifi parçalayarak derin bir etki yarattı.
'Bold experiment' signifies a daring and unconventional attempt in filmmaking. 'Non-linear narrative' is a sophisticated concept in storytelling.
The economist proposed a thought experiment to explore the implications of universal basic income on societal productivity and wealth distribution.
Ekonomist, evrensel temel gelirin toplumsal verimlilik ve servet dağılımı üzerindeki etkilerini araştırmak için bir düşünce deneyi önerdi.
'Thought experiment' refers to a hypothetical scenario used to explore consequences or ideas, common in philosophy and economics.
Undeterred by the risks, the intrepid mountaineer embarked on a solo experiment to summit the notoriously treacherous peak without supplemental oxygen.
Risklerden yılmayan cesur dağcı, ek oksijen olmadan kötü şöhretli tehlikeli zirveye tek başına tırmanma deneyi başlattı.
In this context, 'experiment' describes a personal challenge or daring attempt with an unknown outcome. 'Intrepid' and 'notoriously treacherous' elevate the tone.
近义词
反义词
常见搭配
常用短语
do an experiment
to carry out a test
try an experiment
to attempt a test
make an experiment
to create a test
set up an experiment
to prepare a test
run an experiment
to execute a test
the results of an experiment
what happened after the test
an experiment on animals
a test using animals
an experiment in chemistry
a test in chemistry
learn from an experiment
to gain knowledge from a test
fail an experiment
when a test does not work as expected
习语与表达
"To experiment with something"
To try out different ideas, methods, or activities to see what happens or what works best.
The chef decided to experiment with new spices in her dishes.
neutral"Trial and error"
A process of trying different methods or solutions until one works.
Learning to ride a bike is often a process of trial and error.
neutral"To conduct an experiment"
To perform a scientific test or procedure.
The scientists will conduct an experiment to test their hypothesis.
formal"Guinea pig"
A person or thing used as a subject for an experiment or test.
I felt like a guinea pig when they asked me to try the new software.
informal"To put something to the test"
To try something out to see if it is effective, strong, or reliable.
We need to put this new design to the test before launching it.
neutral"To run an experiment"
To carry out an experiment.
The students are going to run an experiment in the lab tomorrow.
neutral"To be a test case"
An example that is used to test a new rule, law, or procedure.
Her situation became a test case for the new policy.
neutral"To dabble in something"
To take a slight and not very serious interest in something, or to try a particular activity for a short period.
He decided to dabble in painting after he retired.
informal"To give something a whirl"
To try something, often for the first time.
I've never tried surfing, but I might give it a whirl.
informal"To take a chance"
To do something risky with the hope of a good result.
I decided to take a chance and invest in the new company.
neutral如何使用
The word "experiment" can be used as both a noun and a verb. As a noun, it refers to the test itself. As a verb, it means to conduct a test. For example: * **Noun:** "The students conducted an experiment to see how plants grow." (meaning the test) * **Verb:** "Scientists often experiment with new chemicals." (meaning to conduct tests)
A common mistake is confusing "experiment" with "experience." While both involve learning, an experiment is a controlled scientific test, whereas an experience is something that happens to you or that you do, often without a specific scientific goal. * Incorrect: "I had a good experiment at the concert." (should be "experience") * Correct: "The chemist designed a complex experiment." (a scientific test)
记住它
记忆技巧
To remember 'experiment,' think of 'EX-perience' where you gain experience by trying something new, and 'PER-iment' as in 'perform' an experiment. So, 'EX-PER-iment' means to 'experience performing' a test.
视觉联想
Imagine a scientist in a lab coat, wearing safety goggles, holding a bubbling test tube. This image represents the core idea of an 'experiment' – a scientific test.
Word Web
挑战
Describe a simple experiment you could do at home to see if a plant needs sunlight to grow. What steps would you follow? What would you observe?
在生活中练习
真实语境
In a science class, students often perform experiments to understand different concepts. For example, they might conduct an experiment to see how plants grow under different light conditions.
- perform experiments
- conduct an experiment
- science class
Scientists spend a lot of time doing experiments in their labs. They carefully follow steps to test their theories and observe the results.
- doing experiments
- test their theories
- observe the results
Sometimes, when you're trying a new recipe in the kitchen, it feels a bit like an experiment. You mix ingredients and see what happens!
- a bit like an experiment
- trying a new recipe
- mix ingredients
Before a new medicine is approved, doctors need to do many experiments and tests to make sure it is safe and effective for people.
- do many experiments
- safe and effective
- new medicine
My friend is an artist, and she often experiments with different colors and materials to create new kinds of art.
- experiments with different colors
- create new kinds of art
- an artist
对话开场白
"Have you ever done a science experiment? What was it about?"
"What do you think is the most interesting kind of experiment a scientist could do?"
"Can you think of a time when you 'experimented' with something in your daily life, even if it wasn't science?"
"Why do you think experiments are important in learning new things?"
"If you could design any experiment, what would it be?"
日记主题
Describe a science experiment you remember doing in school. What did you learn from it?
Imagine you are a scientist. What problem would you try to solve with an experiment, and how would you do it?
Write about a time you tried something new or took a risk, and how it felt like an 'experiment' in your life.
Reflect on why it's important to be curious and willing to try new things, just like in an experiment.
Think about a common household item. What kind of simple experiment could you do with it to learn something new?
常见问题
10 个问题An experiment is like a special test scientists do. They want to learn how something works or if an idea they have is correct. Think of it like trying out a new recipe to see what happens!
Sure! Imagine you want to know if plants grow better with more sunlight. You could put one plant in a sunny spot and another in a shady spot, then watch them to see which grows taller. That's an experiment!
Not always! While many experiments happen in a science lab, you can do simple ones at home or even outside. The important part is that you are testing an idea.
In an experiment, people usually follow steps. They might mix things, watch what happens, or measure things. They are looking for results to help them understand something new.
Experiments are very important because they help us learn new things about the world. They help scientists discover new medicines, understand nature, and even make new technologies.
An observation is just watching something happen. An experiment is more active; you change something on purpose to see what effect it has. So, observing a bird is different from an experiment where you change its food to see if it changes its feathers.
For some experiments, yes, you might need special equipment. But for many simple experiments, you can use everyday items. For example, testing which paper airplane flies farthest only needs paper!
The main goal of an experiment is to find out an answer to a question. You have an idea, and you do the experiment to see if your idea is true or false.
Sometimes experiments don't give the results you expect, or something doesn't work the way you planned. But even when things 'go wrong,' you still learn something important! It's all part of the learning process.
While it's very common in science, you can use 'experiment' in other ways too. For example, you might 'experiment' with a new hairstyle or 'experiment' with different ways to organize your room. It means trying something new to see what happens.
自我测试 126 个问题
What is an 'experiment'?
An experiment is a scientific test to learn how something works.
Why do people do experiments?
Experiments help us understand how things work or if an idea is true.
Where are experiments common?
Students often do experiments in science classes.
An experiment is a scientific test.
Yes, an experiment is a scientific test.
You do an experiment to find out if an idea is true.
Yes, an experiment can help you see if an idea is true.
Experiments are not done in science classes.
No, experiments are a common activity in science classes.
Listen for what the students did.
Listen for why they need to do something.
Listen for what an experiment helps us do.
Read this aloud:
Experiment
Focus: /ɪkˈspɛr.ɪ.mənt/
你说的:
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Read this aloud:
I like to do experiments.
Focus: experiments
你说的:
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Read this aloud:
It is a science experiment.
Focus: science experiment
你说的:
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Write a short sentence about what an 'experiment' is, using simple words.
Well written! Good try! Check the sample answer below.
Sample answer
An experiment is a science test to learn new things.
Imagine you are in a science class. What is one thing you might do in an 'experiment'?
Well written! Good try! Check the sample answer below.
Sample answer
In an experiment, I might mix colors and watch what happens.
Finish the sentence: 'We do an experiment to find out...'
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Sample answer
We do an experiment to find out how things work.
What is an experiment in school?
Read this passage:
In school, we learn about many things. Sometimes, we do a special test called an experiment. An experiment helps us see if our ideas about science are true. We follow steps carefully and watch what happens.
What is an experiment in school?
The passage says, 'Sometimes, we do a special test called an experiment.'
The passage says, 'Sometimes, we do a special test called an experiment.'
What can you do in an experiment?
Read this passage:
A science class is fun. We often do an experiment. For example, we can mix water and oil to see if they mix. This helps us understand how things behave.
What can you do in an experiment?
The passage gives an example: 'For example, we can mix water and oil to see if they mix.'
The passage gives an example: 'For example, we can mix water and oil to see if they mix.'
Why is it important to follow the steps in an experiment?
Read this passage:
When you do an experiment, it is important to follow all the steps. This helps you get a good result. You can learn a lot from a good experiment.
Why is it important to follow the steps in an experiment?
The passage states, 'it is important to follow all the steps. This helps you get a good result.'
The passage states, 'it is important to follow all the steps. This helps you get a good result.'
The scientist conducted an ___ to test his hypothesis about plant growth.
An experiment is a scientific test to learn something new or confirm an idea. In this case, the scientist is testing a hypothesis, which aligns with the definition of an experiment.
For our science project, we will design and carry out an ___ to see how different types of soil affect bean plants.
Students in a science class often perform experiments to observe results and learn. This question describes a typical science project activity.
The children did a simple ___ to find out if objects float or sink in water.
This describes a simple scientific test to observe a result, which is an experiment. Even children can do simple experiments.
The results of the ___ showed that the new medicine was effective.
Medicines are often tested through experiments to determine their effectiveness, and the results of these tests are then analyzed.
Before we can say for sure, we need to do more ___ to confirm our findings.
To confirm scientific findings, especially initial results, multiple experiments are often conducted to ensure consistency and reliability.
My chemistry teacher always tells us to be careful when we do an ___ in the lab.
Chemistry labs are places where students perform experiments, and safety is always important during these activities.
The scientist will ___ an experiment to test his theory.
We use 'do an experiment' to mean perform a scientific test.
Students often learn about science by doing simple ___ in class.
Experiments are practical activities in science to learn and observe.
Before starting the experiment, it's important to read all the ___ carefully.
Following instructions is crucial for a successful and safe experiment.
An experiment is always done by a professional scientist in a lab.
Experiments can be done by students in class or even at home, not just by professional scientists.
The main goal of an experiment is to find out something new or test an idea.
Experiments are designed to observe results and test theories.
You should always guess the result of an experiment before you start.
While you might have a hypothesis, the purpose of an experiment is to observe the actual result, not to guess it definitively.
Listen for what the students did.
Listen for what needs to be set up.
Listen for what kind of results are being asked about.
Read this aloud:
Can you describe what an experiment is?
Focus: experiment
你说的:
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Read this aloud:
Tell me about a time you did an experiment, or saw one.
Focus: experiment, saw
你说的:
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Read this aloud:
Why are experiments important in science?
Focus: important, science
你说的:
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Imagine you are in a science class. Describe a simple experiment you would like to do. What would you do and what do you hope to learn?
Well written! Good try! Check the sample answer below.
Sample answer
In science class, I want to do an experiment with plants. I will give some plants water and some no water to see what happens. I hope to learn how important water is for plants.
Complete the sentence: 'We do an experiment to find out...'
Well written! Good try! Check the sample answer below.
Sample answer
We do an experiment to find out how something works or if an idea is true.
Write a short sentence about why experiments are important in science.
Well written! Good try! Check the sample answer below.
Sample answer
Experiments are important in science because they help us learn new things about the world.
What do scientists do to understand how things work?
Read this passage:
Scientists often do many experiments to understand how things work. They follow steps carefully and write down what they see. This helps them find answers to their questions and sometimes discover new things.
What do scientists do to understand how things work?
The passage states, 'Scientists often do many experiments to understand how things work.'
The passage states, 'Scientists often do many experiments to understand how things work.'
What did the students learn from the experiment?
Read this passage:
In a science class, students did an experiment about mixing colors. They mixed red and blue paint and saw that it made purple. It was a fun way to learn about colors.
What did the students learn from the experiment?
The passage says, 'They mixed red and blue paint and saw that it made purple. It was a fun way to learn about colors.'
The passage says, 'They mixed red and blue paint and saw that it made purple. It was a fun way to learn about colors.'
What is one reason to do an experiment?
Read this passage:
An experiment is a special test. You do it to see what happens when you try something new or when you want to prove an idea. For example, you might do an experiment to see if a plant grows better in sunlight or in the dark.
What is one reason to do an experiment?
The passage states, 'You do it to see what happens when you try something new or when you want to prove an idea.'
The passage states, 'You do it to see what happens when you try something new or when you want to prove an idea.'
The scientist conducted a series of _______ to prove his theory.
An 'experiment' is a scientific test to prove a theory. The other options don't fit the context of proving a theory scientifically.
Before starting the _______, the students carefully read the instructions.
Reading instructions carefully is typical before conducting a scientific 'experiment' in a class setting. The other options are less likely to involve detailed instructions for a practical activity.
What is the primary goal of an experiment?
The definition of an 'experiment' involves testing an idea or observing results to understand how something works.
An experiment is typically done to find out how something works or to see if an idea is true.
This statement accurately reflects the definition of an experiment: a scientific test to gain knowledge or verify a hypothesis.
Students usually avoid experiments in science classes because they are too difficult.
While experiments can be challenging, they are a common and essential activity in science classes, not typically avoided. The definition states it's a common activity.
An experiment is mainly a casual conversation between scientists.
An 'experiment' is a structured scientific test with specific steps and observations, not a casual conversation.
Listen for the word that means a scientific test.
What kind of activity did they do in chemistry class?
What word describes a scientific test or procedure?
Read this aloud:
Can you describe a time you saw or participated in an experiment?
Focus: experiment
你说的:
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Read this aloud:
Why do you think experiments are important in scientific discovery?
Focus: discovery
你说的:
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Read this aloud:
Imagine you are designing an experiment. What would you want to test and why?
Focus: designing, test
你说的:
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Imagine you are a scientist. Describe a simple experiment you would conduct to test if plants grow better with or without sunlight. What would you do and what do you expect to observe?
Well written! Good try! Check the sample answer below.
Sample answer
To test if plants grow better with sunlight, I would take two identical plants. I would place one plant in a sunny spot and the other in a dark closet. I would water both plants equally and observe them daily for a week. I expect the plant in the sunny spot to grow taller and greener, while the plant in the dark will likely become yellow and stop growing.
Write a short paragraph about the importance of conducting experiments in scientific research. Why do scientists do them?
Well written! Good try! Check the sample answer below.
Sample answer
Experiments are crucial in scientific research because they allow scientists to test their theories and hypotheses in a controlled environment. By conducting experiments, they can gather evidence to either support or disprove their ideas. This process is essential for making new discoveries, expanding our understanding of the world, and developing new technologies or solutions to problems.
You've just completed a science experiment. Write a short journal entry explaining what you did, what you found, and what you learned from it.
Well written! Good try! Check the sample answer below.
Sample answer
Today, I finished my experiment on how different types of soil affect plant growth. I used three different soil samples and planted the same kind of seed in each. After two weeks, I observed that the plants in the nutrient-rich soil grew much taller and had more leaves compared to the other two. I learned that soil composition plays a significant role in plant development and that providing the right nutrients is key for healthy growth.
What was the main purpose of Galileo's alleged experiment?
Read this passage:
In a famous experiment, Galileo Galilei is said to have dropped two balls of different masses from the Leaning Tower of Pisa. His goal was to demonstrate that objects fall at the same rate regardless of their weight, contrary to Aristotle's long-held belief. While there is some debate about whether this exact experiment took place, the principle was later proven through other scientific investigations.
What was the main purpose of Galileo's alleged experiment?
The passage clearly states that Galileo's goal was 'to demonstrate that objects fall at the same rate regardless of their weight, contrary to Aristotle's long-held belief.'
The passage clearly states that Galileo's goal was 'to demonstrate that objects fall at the same rate regardless of their weight, contrary to Aristotle's long-held belief.'
What led to the discovery of penicillin?
Read this passage:
Many scientific breakthroughs have come from unexpected experimental results. For instance, the discovery of penicillin by Alexander Fleming was a happy accident. He noticed a mold growing on a petri dish that was inhibiting the growth of bacteria. This observation led to further experiments and eventually the development of the first antibiotic, revolutionizing medicine.
What led to the discovery of penicillin?
The passage states that Fleming 'noticed a mold growing on a petri dish that was inhibiting the growth of bacteria' and calls it a 'happy accident', indicating an unexpected observation.
The passage states that Fleming 'noticed a mold growing on a petri dish that was inhibiting the growth of bacteria' and calls it a 'happy accident', indicating an unexpected observation.
What is the typical first step a scientist takes before starting an experiment?
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Before conducting an experiment, scientists usually form a hypothesis, which is an educated guess about what they expect to happen. They then design the experiment to test this hypothesis, collecting data and analyzing the results. If the results support the hypothesis, it strengthens the theory. If not, the hypothesis might need to be revised or rejected.
What is the typical first step a scientist takes before starting an experiment?
The passage explicitly states, 'Before conducting an experiment, scientists usually form a hypothesis'.
The passage explicitly states, 'Before conducting an experiment, scientists usually form a hypothesis'.
This sentence describes a common scenario where an experiment is used in scientific research.
This sentence illustrates how experiments are often performed in an educational setting.
This sentence shows the purpose of an experiment: to verify a hypothesis.
The scientists conducted a groundbreaking ___ to test their hypothesis about the new drug's effectiveness.
An 'experiment' is a scientific test designed to confirm or refute a hypothesis, which fits the context of testing a drug's effectiveness. The other options refer to different stages or aspects of scientific inquiry.
Before finalizing their product, the engineers ran several ___ to ensure its durability under various conditions.
In engineering, tests to confirm durability are typically referred to as 'experiments' or trials. 'Speculations', 'theories', and 'predictions' are not practical tests.
The art class encouraged students to ___ with different mediums and techniques to discover their unique artistic style.
To 'experiment' in this context means to try out different things to see what works best, which aligns with discovering a unique artistic style. The other options suggest a lack of exploration or creativity.
An experiment always needs to be conducted in a strictly controlled laboratory environment to be considered valid.
While many experiments are conducted in controlled environments, some valid experiments, particularly in fields like sociology or ecology, are conducted in natural settings.
The primary goal of an experiment is to prove a hypothesis absolutely correct.
The primary goal of an experiment is to test a hypothesis, either confirming or refuting it, rather than proving it absolutely correct. Scientific findings are always open to further testing and refinement.
In a scientific experiment, it is crucial to have at least one variable that can be changed and observed.
A key component of a scientific experiment is the manipulation of an independent variable to observe its effect on a dependent variable, which means there must be at least one variable that is changed and measured.
Listen for the main activity the scientists are doing.
Pay attention to what 'she' designed.
What do the results of the initial experiment suggest?
Read this aloud:
Can you explain the purpose of conducting an experiment in scientific research?
Focus: purpose, conducting, scientific, research
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Describe a time when you or someone you know had to experiment with different approaches to solve a problem.
Focus: describe, experiment, approaches, solve, problem
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What are some ethical considerations that scientists must take into account when planning and carrying out experiments?
Focus: ethical, considerations, planning, carrying out
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Imagine you are a scientist planning a new experiment. Describe what you hope to achieve, the steps you would take, and what potential challenges you might face.
Well written! Good try! Check the sample answer below.
Sample answer
My experiment will investigate the effect of different light wavelengths on plant growth. My hypothesis is that blue light will promote the most significant growth. The method will involve growing identical plant samples under controlled conditions, each exposed to a different wavelength of light (red, blue, green, and white as a control). I will meticulously measure stem height, leaf count, and overall biomass weekly. Potential challenges include maintaining consistent light intensity across all groups and accurately controlling environmental factors like temperature and humidity to ensure the validity of my results.
Discuss the ethical considerations involved in conducting scientific experiments, especially when they involve human subjects or animals. What responsibilities do scientists have?
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Sample answer
When conducting scientific experiments, particularly those involving human subjects or animals, ethical considerations are paramount. Scientists have a responsibility to ensure the safety and well-being of all participants, obtaining informed consent from human subjects and adhering to strict guidelines for animal welfare. Transparency and integrity are crucial, meaning data must be reported accurately and without bias. Avoiding any potential harm, whether physical or psychological, is a fundamental ethical obligation that shapes experimental design and execution.
Write a short paragraph explaining why replication is important in scientific experiments. What can happen if an experiment's results cannot be replicated?
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Sample answer
Replication is crucial in scientific experiments because it validates the reliability and trustworthiness of the findings. When an experiment's results can be consistently reproduced by other researchers, it strengthens the evidence supporting a hypothesis and increases confidence in the scientific conclusions. Conversely, if an experiment's results cannot be replicated, it casts doubt on the original findings, suggesting potential errors in methodology, accidental occurrences, or even fraudulent data. This can undermine the credibility of the research and impede scientific progress, highlighting the importance of rigorous and reproducible experimental designs.
What is one of the key outcomes of the double-slit experiment?
Read this passage:
In the field of quantum physics, experiments often yield results that challenge our conventional understanding of reality. One such experiment, known as the double-slit experiment, demonstrates that particles can exhibit both wave-like and particle-like properties simultaneously. This phenomenon has led to profound philosophical debates about observation and its impact on the physical world. Understanding these complex experiments requires a willingness to embrace concepts that defy everyday intuition.
What is one of the key outcomes of the double-slit experiment?
The passage states, 'One such experiment, known as the double-slit experiment, demonstrates that particles can exhibit both wave-like and particle-like properties simultaneously.'
The passage states, 'One such experiment, known as the double-slit experiment, demonstrates that particles can exhibit both wave-like and particle-like properties simultaneously.'
What is emphasized as crucial for a successful chemistry experiment?
Read this passage:
Conducting a successful experiment in chemistry often involves meticulous preparation and precise measurement. Even minor variations in temperature, pressure, or the purity of reagents can significantly alter the outcome. Researchers must carefully control all variables to ensure that the observed effects are genuinely attributable to the experimental manipulation. This rigorous approach is essential for drawing accurate conclusions and contributing reliable data to the scientific community.
What is emphasized as crucial for a successful chemistry experiment?
The passage states, 'Even minor variations in temperature, pressure, or the purity of reagents can significantly alter the outcome. Researchers must carefully control all variables to ensure that the observed effects are genuinely attributable to the experimental manipulation.'
The passage states, 'Even minor variations in temperature, pressure, or the purity of reagents can significantly alter the outcome. Researchers must carefully control all variables to ensure that the observed effects are genuinely attributable to the experimental manipulation.'
According to the passage, why is independent verification important for a groundbreaking experiment?
Read this passage:
The scientific method relies heavily on repeatable experiments to build a robust body of knowledge. A single groundbreaking experiment, while exciting, often requires subsequent independent verification to be fully accepted by the scientific community. This process of peer review and replication ensures that scientific discoveries are based on solid evidence rather than isolated observations or potential errors. It is through this collaborative and critical approach that science progresses.
According to the passage, why is independent verification important for a groundbreaking experiment?
The passage explains, 'A single groundbreaking experiment, while exciting, often requires subsequent independent verification to be fully accepted by the scientific community.'
The passage explains, 'A single groundbreaking experiment, while exciting, often requires subsequent independent verification to be fully accepted by the scientific community.'
This sentence describes a common scenario where scientists perform an experiment to validate a new idea or theory.
This sentence emphasizes the importance of data analysis after an experiment, which is a key part of the scientific method.
This sentence illustrates how significant scientific advancements often result from extensive experimental work over a long period.
The double-blind _______ was meticulously designed to eliminate bias in the drug trial.
An experiment is a scientific test, and 'double-blind' specifies a careful design to prevent bias, making 'experiment' the best fit. 'Hypothesis' is an idea, 'theory' is a well-substantiated explanation, and 'conjecture' is an opinion.
Before concluding, the scientists decided to replicate the _______ to ensure the validity of their groundbreaking findings.
Replicating an 'experiment' is standard scientific practice to confirm results and ensure validity. 'Observation' is simply watching, 'speculation' is guessing, and 'deduction' is drawing conclusions from premises.
The entire research team was engrossed in planning the next phase of their _______, which aimed to explore the effects of microgravity on plant growth.
Planning 'the next phase' of a scientific investigation implies a structured test, making 'experiment' the appropriate choice. 'Contemplation' and 'meditation' are forms of thought, and 'reverie' is a daydream.
A truly controlled experiment seeks to vary multiple independent variables simultaneously to observe a wider range of outcomes.
A truly controlled experiment typically isolates and varies only one independent variable at a time to determine its specific effect, keeping all other variables constant. Varying multiple independent variables simultaneously would make it difficult to attribute changes to a single cause.
The primary goal of an experiment is often to generate a hypothesis, not to test an existing one.
While experiments can sometimes lead to new hypotheses, their primary goal is usually to test or validate an existing hypothesis or theory by observing specific outcomes under controlled conditions.
Ethical considerations are paramount when designing any experiment involving human subjects, requiring informed consent and minimizing potential harm.
Ethical considerations, including informed consent and minimizing harm, are indeed paramount in any experiment involving human subjects to protect their rights and well-being.
Focus on understanding the precise scientific terminology.
Pay attention to the vocabulary related to experimental design.
Identify the tone and expectation conveyed in the sentence.
Read this aloud:
Can you elaborate on the ethical considerations that must be taken into account when conducting human-subject experiments?
Focus: elaborate, ethical, considerations, conducting
你说的:
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Discuss the potential ramifications of a failed experiment, both scientifically and financially.
Focus: discuss, potential, ramifications, scientifically, financially
你说的:
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In what ways can experimental data be misinterpreted, and what safeguards can be implemented to prevent such errors?
Focus: misinterpreted, safeguards, implemented, prevent
你说的:
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Imagine you are a lead scientist preparing a grant proposal for a groundbreaking new experiment. Describe the experiment's objective, methodology, and anticipated impact. Emphasize the novel aspects and potential challenges.
Well written! Good try! Check the sample answer below.
Sample answer
Our proposed experiment aims to investigate the efficacy of a novel gene-editing technique in mitigating the effects of neurodegenerative diseases. The methodology involves CRISPR-Cas9 mediated gene insertion in a controlled in-vivo model, with a particular focus on minimizing off-target effects. We anticipate a significant breakthrough in therapeutic approaches for previously incurable conditions. However, potential challenges include the precise delivery of the gene-editing complex and the ethical considerations surrounding germline editing.
Reflect on a significant scientific experiment from history. Discuss its design, the results obtained, and its lasting impact on scientific understanding or society. Consider how the experiment might be viewed or critiqued through a contemporary lens.
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Sample answer
One seminal experiment is the Michelson-Morley experiment, designed to detect the luminiferous aether. Its null result, though initially puzzling, profoundly influenced the development of Einstein's theory of special relativity, fundamentally altering our understanding of space and time. Through a contemporary lens, the experiment is a testament to rigorous scientific inquiry, even when faced with unexpected outcomes, highlighting the importance of empirical evidence over theoretical assumptions.
You are writing a science communication piece for a general audience about the importance of conducting ethical experiments. Explain what constitutes an ethical experiment and why it is crucial for public trust and scientific progress.
Well written! Good try! Check the sample answer below.
Sample answer
Conducting ethical experiments is paramount for both maintaining public trust and ensuring the integrity of scientific progress. At its core, an ethical experiment prioritizes the well-being and rights of all participants, human or animal, by ensuring informed consent, minimizing potential harm, and maintaining strict confidentiality. Furthermore, transparency in reporting results, even negative ones, is crucial to prevent bias and build public confidence in scientific findings. Without these ethical safeguards, the very foundation of scientific discovery could be undermined, leading to skepticism and a reluctance to support vital research.
What is the primary purpose of Schrödinger's Cat thought experiment?
Read this passage:
In the realm of quantum mechanics, a particularly famous thought experiment is Schrödinger's Cat. Conceived by Erwin Schrödinger in 1935, this paradoxical scenario aimed to illustrate the incompleteness of quantum mechanics when scaling from subatomic to macroscopic systems. The experiment involves a cat, a flask of poison, and a radioactive source placed inside a sealed box. The cat's fate, whether alive or dead, is inextricably linked to the unpredictable decay of a single atom. Until the box is opened and an observation is made, the cat is considered to be simultaneously alive and dead, existing in a superposition of states.
What is the primary purpose of Schrödinger's Cat thought experiment?
The passage explicitly states that the experiment 'aimed to illustrate the incompleteness of quantum mechanics when scaling from subatomic to macroscopic systems.'
The passage explicitly states that the experiment 'aimed to illustrate the incompleteness of quantum mechanics when scaling from subatomic to macroscopic systems.'
What was the unforeseen outcome of the Hawthorne experiments?
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The Hawthorne experiments, conducted at the Western Electric Company's Hawthorne Works in Cicero, Illinois, from 1924 to 1932, initially aimed to investigate the effect of physical conditions on worker productivity. However, the unexpected results, where productivity improved regardless of changes to lighting or other environmental factors, led researchers to conclude that the social and psychological aspects of work, such as attention from supervisors and a sense of belonging, played a far more significant role. This phenomenon, where individuals modify their behavior in response to being observed, is now known as the Hawthorne effect.
What was the unforeseen outcome of the Hawthorne experiments?
The passage states that 'productivity improved regardless of changes to lighting or other environmental factors,' leading to the conclusion that 'the social and psychological aspects of work... played a far more significant role.'
The passage states that 'productivity improved regardless of changes to lighting or other environmental factors,' leading to the conclusion that 'the social and psychological aspects of work... played a far more significant role.'
Why was the Stanford Prison Experiment terminated prematurely?
Read this passage:
In the annals of psychological research, the Stanford Prison Experiment stands as a controversial yet highly influential study. Conducted in 1971 by Philip Zimbardo at Stanford University, the experiment sought to investigate the psychological effects of perceived power, focusing on the struggle between prisoners and prison officers. Participants were randomly assigned roles, and the simulation quickly escalated, demonstrating how readily individuals conform to social roles and how situations can profoundly influence behavior, often leading to ethically questionable outcomes. The experiment was prematurely terminated due to its intense and distressing nature.
Why was the Stanford Prison Experiment terminated prematurely?
The passage states, 'The experiment was prematurely terminated due to its intense and distressing nature.'
The passage states, 'The experiment was prematurely terminated due to its intense and distressing nature.'
The groundbreaking research involved a meticulously designed ___ to ascertain the efficacy of the novel therapeutic compound.
In this context, 'experiment' refers to a scientific test or procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact, which aligns with the idea of 'meticulously designed' research to 'ascertain efficacy'.
The double-blind ___ was instrumental in mitigating observer bias, thereby lending greater credence to the study's conclusions.
A 'double-blind experiment' is a standard scientific methodology used to prevent bias, making 'experiment' the most suitable word in this context.
Critics argued that the ethical implications of the human gene-editing ___ had not been fully deliberated prior to its commencement.
Here, 'experiment' denotes a procedure or test, especially one carried out to determine something unknown or to test a hypothesis, which fits the context of human gene-editing and ethical concerns.
The research team embarked on a series of rigorous ___ to validate the theoretical model against empirical data.
'Experiments' refers to systematic tests or procedures, which is precisely what would be done to 'validate a theoretical model against empirical data'.
In a daring pedagogical ___, the professor eschewed traditional lecturing in favor of a student-led, project-based learning approach.
In this metaphorical sense, 'experiment' refers to a novel course of action or procedure, especially one undertaken to discover if it will work or not, fitting the 'daring pedagogical' context.
The pharmaceutical company's new drug underwent extensive clinical ___ before it could be considered for regulatory approval.
While 'trials' is also a good option, 'experimentation' encompasses the broad process of conducting tests and procedures, which is more appropriate for 'extensive clinical' work on a new drug before approval.
Focus on the complexity and impact of the experiment.
Consider the journey from skepticism to acceptance.
Pay attention to the role of the investigator and the outcome.
Read this aloud:
Articulate the intricate methodologies employed in the recent psychological experiment and discuss its profound implications for our comprehension of cognitive biases.
Focus: articulate, intricate, methodologies, profound implications, comprehension, cognitive biases
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Elaborate on the ethical considerations that must invariably underpin any research experiment involving human subjects, providing illustrative examples from contemporary scientific discourse.
Focus: elaborate, ethical considerations, invariably, underpin, illustrative examples, contemporary scientific discourse
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Read this aloud:
Critically analyze the limitations inherent in replicating certain large-scale social experiments, and propose innovative strategies to mitigate these challenges effectively.
Focus: critically analyze, limitations inherent, replicating, large-scale social experiments, innovative strategies, mitigate these challenges, effectively
你说的:
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This sentence describes how detailed scientific testing leads to a deeper understanding of quantum physics, fitting the C2 level by using advanced vocabulary and a nuanced scientific context.
This sentence emphasizes the critical importance of strict procedures in scientific experiments to guarantee the truthfulness of results, employing C2-level vocabulary like 'rigorous,' 'paramount,' and 'veracity'.
This sentence describes an experiment's goal to clarify previously unknown biological processes, using sophisticated vocabulary such as 'elucidate,' 'heretofore,' and 'mechanisms,' appropriate for C2 level.
/ 126 correct
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例句
I am doing a simple experiment with plants and water for my homework.
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abalihood
C1描述一种潜在的可能性状态或为技能获取而准备就绪的固有品质。
abcedation
C1Abcedation refers to the act of teaching, learning, or arranging something in alphabetical order. It is an obscure or technical term used primarily in archival, linguistic, or historical educational contexts to describe systematic organization or initial literacy.
abcognful
C1An abcognful refers to the maximum amount of abstract cognitive data an individual can consciously process or hold in working memory at one time. It is a specialized term used in psychometric testing to quantify the upper limits of conceptual synthesis and mental agility.
ability
A1Ability is the physical or mental power or skill needed to do something. It describes what a person is capable of achieving through talent or training.
abspirary
C1指研究或行动中的次要或附带目标,偏离了主要焦点。
abstract
B2A brief summary of a research paper, thesis, or report that highlights the main points and findings. It is typically found at the beginning of a document to help readers quickly understand the core purpose and results.
abstruse
C1Describing something that is difficult to understand because it is intellectual, complex, or obscure. It is typically used for subjects, theories, or language that require significant effort or specialized knowledge to grasp.
academic
A2Relating to schools, colleges, and universities, or connected to studying and thinking rather than practical or technical skills. It is often used to describe subjects like history, math, and science that are studied in an educational setting.
accreditation
B2指机构或课程通过了官方的质量认证。这是一种正式认可,证明该机构符合特定的教学标准。
acquire
A2获得或得到某物,如实体物品、技能或知识,通常是通过努力或购买。它经常用于描述一个渐进的学习过程或正式的商业交易。