Name: エネルギーとは何か？ (What is Energy?)
Uploaded: 2021-01-14T07:15:08.000Z
Duration: 3 min 24 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

to 不定詞

Hi everyone! I'm Jayde and today we're
going to talk about energy! But what is

法助動詞 A2

energy? Well all around us are things
that move - we can see cars driving, we can

see people walking, we can see things
moving around on TV - and if you look for

a really long time, you might even see
plants growing... very slowly of course! But

what gives these things their ability to
move? Well, the answer is energy! Energy is

the power to move, the power to do work. Energy makes things happen all around us.

Energy isn't something that we can see
or hold or touch - it's sort of like the

wind. You can't see the wind or hold the
wind - but you can see the effects of the

wind as it blows things around. Energy is the same - you can't see the energy but

you can see energy moving things. You can see energy at work. There's two types of

energy that you might notice around you
- one type is moving energy - also called

kinetic energy. Imagine you ride your bicycle up a hill -

it takes a lot of energy to move your
bike up the hill, and because the bike is

moving - you're using kinetic energy. The
bigger and heavier the bicycle, the

harder you have to push and the more
kinetic energy you need to make the

bicycle move! The second type of energy is called stored energy, or potential

energy. This is when something isn't moving right now, but it could move. It has the

potential to move - which is why we call
it potential energy. So, for example, if

you're on your bike and you're at the
top of the hill, you have to keep your

brakes on, otherwise you'll roll down the
hill. The bike has potential energy - or

stored energy - energy stored in the
bicycle, waiting to be used. As soon as

you take the brakes off you begin to
roll down the hill, and because now you

and the bike are moving - that's called
kinetic energy again. So energy is the

ability to move against a force - whether
you're actually moving right now or if

you're holding on to that energy to move
later. Now, I've talked about the two

kinds of energy - kinetic energy and
potential energy - let's talk about where

energy comes from. Imagine you're riding your bike up the hill again. When you

ride your bike your body is using energy
that came from food. Humans get all their

energy from food. Energy that's from food is called chemical energy because it

comes from the chemicals in the food -
that's why sometimes if you haven't

eaten for a while you might get hungry
or even hangry - and feel tired. It's a

sign that your body is running out of
chemical energy and it needs more, so it

has the energy to do more exercise. But
where does the food get its energy from?

Here's a food you might know... a potato. This potato was once part of a potato

plant - and plants get their energy from
the Sun - in the form of light energy. So

that's where plants and humans get their energy from... but what about your computer

or your TV - where do they get their
energy from? Well, computers and TVs and

other appliances in your house get their
energy from electrical energy. You might

call it electricity. Electricity comes
from power plants that make electrical

energy by burning oil or coal, and they
send the electricity to our home along

wires. Some homes get their electricity
from solar panels. Solar panels turn the

light energy from the Sun into
electrical energy that you can use in

your home. So in this video we learned
about the two kinds of energy: kinetic or

moving energy, and potential or stored
energy - and we also learned about the

places where energy comes from. Whether your energy comes from food or from

light or from electricity - all types of
energy just mean the ability or the

字幕リスト動画再生

エネルギーとは何か？ (What is Energy?)

sort

potential

force

imagine