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4 Amazing Science Experiments for a Day Inside | Compilation | SciShow Kids
学习统计
CEFR 等级
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字幕 (440 片段)
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[Music]
oh
hey squeaks what's wrong you doing okay
oh
you're bored have you tried playing
outside today
too cold huh how about doing a puzzle or
reading a good book
have you thought about calling a friend
maybe you could catch up with Bill and
Webb you've really thought about
everything hmm hey here's an idea why
don't we do some experiments I know you
and Jesse have done a lot of experience
in the fort before so why don't you show
me how some of them work I bet you're a
pro by now
why don't you join us maybe you can even
do some of these experiments at home
could we start with the blubber
experiment that you and Jesse did that
one always looked like a lot of fun
cool I'm ready when you are
when the weather gets chilly what do you
do to keep warm do you put on a sweater
or slippers or maybe you bundle up with
your favorite blanket well if you were
an animal living way up near the North
Pole or down south in Antarctica you
wouldn't have those things to keep you
warm but then again you wouldn't need
them recently we learned how reindeer
and Caribou stay warm even though they
live in the cold weather of the tundra
but what about animals that spend most
of their time in icy cold water these
animals have a special adaptation that
they use to keep warm it's called
Flubber blubber is a special kind of fat
that some animals have right below their
skin this layer of fat helps keep their
body heat in and the cold out animals
like seals whales and walruses all have
blubber it allows them to live in some
of the coldest waters on the planet so
do you think blubber would keep you warm
would you like to find out well squeaks
and I aren't SEALS or walruses so we
don't have any blubber handy but we can
do an extra experiment with something
that's a little bit like blubber
shortening which is also known as
cooking fat shortening is a kind of fat
much like blubber is so we can use it to
see if it'll keep me or at least my hand
warm even when it's dunked in ice cold
water so I'm going to leave one hand
just the way it is and cover the other
with shortening then I'll put both of my
hands in ice water to see what happens
what do you think will happen squeaks
I think you're right I think my bare
hand will get really cold and that my
hand covered in shortening will stay
warm if you'd like to join us in our
experiment here are a few things you'll
need you'll need two large bowls some
water and ice plus two plastic bags
large enough for your hands to fit in
and of course you'll need some
shortening as well as a big spoon a
towel and as always help from a grown-up
also make sure to do your experiment in
a place where it's okay to make a mess
first let's fill the bowl with water
which we've already done and add some
ice to make it nice and cold while our
water cools down we're gonna fill one of
our plastic bags with shortening you'll
want to fill your bag about halfway full
next we'll put a second bag inside the
one filled with shortening that way you
can put your hand in there without
getting shortening all over it now that
we have the second bag inside let's
flatten them together and squish the
shortening around so there's an even
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