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B1 متوسط انگلیسی 17:09 Educational

4 Amazing Science Experiments for a Day Inside | Compilation | SciShow Kids

SciShow Kids · 2,449,839 بازدید · اضافه شده 3 روز پیش

آمار یادگیری

B1

سطح CEFR

5/10

سختی

زیرنویس‌ها (440 بخش‌ها)

00:00

foreign

00:02

[Music]

00:05

oh

00:07

hey squeaks what's wrong you doing okay

00:12

oh

00:13

you're bored have you tried playing

00:15

outside today

00:18

too cold huh how about doing a puzzle or

00:21

reading a good book

00:23

have you thought about calling a friend

00:25

maybe you could catch up with Bill and

00:27

Webb you've really thought about

00:30

everything hmm hey here's an idea why

00:33

don't we do some experiments I know you

00:35

and Jesse have done a lot of experience

00:36

in the fort before so why don't you show

00:39

me how some of them work I bet you're a

00:41

pro by now

00:44

why don't you join us maybe you can even

00:46

do some of these experiments at home

00:48

could we start with the blubber

00:50

experiment that you and Jesse did that

00:52

one always looked like a lot of fun

00:54

cool I'm ready when you are

00:57

when the weather gets chilly what do you

01:00

do to keep warm do you put on a sweater

01:02

or slippers or maybe you bundle up with

01:04

your favorite blanket well if you were

01:06

an animal living way up near the North

01:08

Pole or down south in Antarctica you

01:11

wouldn't have those things to keep you

01:12

warm but then again you wouldn't need

01:14

them recently we learned how reindeer

01:17

and Caribou stay warm even though they

01:19

live in the cold weather of the tundra

01:21

but what about animals that spend most

01:22

of their time in icy cold water these

01:25

animals have a special adaptation that

01:28

they use to keep warm it's called

01:29

Flubber blubber is a special kind of fat

01:32

that some animals have right below their

01:35

skin this layer of fat helps keep their

01:36

body heat in and the cold out animals

01:39

like seals whales and walruses all have

01:42

blubber it allows them to live in some

01:44

of the coldest waters on the planet so

01:47

do you think blubber would keep you warm

01:49

would you like to find out well squeaks

01:52

and I aren't SEALS or walruses so we

01:54

don't have any blubber handy but we can

01:57

do an extra experiment with something

01:59

that's a little bit like blubber

02:01

shortening which is also known as

02:03

cooking fat shortening is a kind of fat

02:05

much like blubber is so we can use it to

02:08

see if it'll keep me or at least my hand

02:10

warm even when it's dunked in ice cold

02:13

water so I'm going to leave one hand

02:15

just the way it is and cover the other

02:17

with shortening then I'll put both of my

02:19

hands in ice water to see what happens

02:22

what do you think will happen squeaks

02:25

I think you're right I think my bare

02:28

hand will get really cold and that my

02:30

hand covered in shortening will stay

02:32

warm if you'd like to join us in our

02:34

experiment here are a few things you'll

02:36

need you'll need two large bowls some

02:38

water and ice plus two plastic bags

02:41

large enough for your hands to fit in

02:43

and of course you'll need some

02:45

shortening as well as a big spoon a

02:47

towel and as always help from a grown-up

02:49

also make sure to do your experiment in

02:52

a place where it's okay to make a mess

02:53

first let's fill the bowl with water

02:55

which we've already done and add some

02:57

ice to make it nice and cold while our

03:00

water cools down we're gonna fill one of

03:02

our plastic bags with shortening you'll

03:04

want to fill your bag about halfway full

03:05

next we'll put a second bag inside the

03:08

one filled with shortening that way you

03:10

can put your hand in there without

03:11

getting shortening all over it now that

03:13

we have the second bag inside let's

03:15

flatten them together and squish the

03:17

shortening around so there's an even

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