تدريب Shadowing: Down to Earth: Crash Course Kids #4.2 - تعلم التحدث بالإنجليزية عبر الفيديو

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So, you know that the earth is round and you know that gravity is the force that pulls objects down. But if the earth is round and there's stuff at the bottom of the earth, say a penguin in Antarctica, why doesn't gravity pull the penguin down off of the earth?

I mean does gravity really pull down?

When we talk about gravity and we say things like up or down.

We don't mean those things in the sense that you're used to. In this case up just means away from the earth and down means towards it So, when you hear people say gravity pulls things down to earth, they really mean that gravity pulls things toward the earth.

Now think of it this way, gravity is the force of attraction between any two objects made of matter. Right.

Well I have news for you, you're made of matter and so is the earth.

That means you and the earth have an attraction to each other.

Awww you guys.

Anyway the scientific argument for gravity is that any object that's on or close to Earth's surface and is made of less matter than Earth will be pulled in by our planet stronger gravitational pull.

Want to do a little demonstration?

To show how Earth's gravity can pull an object, like the penguin we mentioned before, toward it no matter where on earth that penguin is, all you need is a tennis ball and a rubber band, oh and your index finger.

Now let's pretend that tennis ball is earth and the rubber band represents the force of gravity that makes your finger our adorable little penguin, just chillin on the surface of the earth. Now stretch the rubber band around your tennis ball earth and stick your finger under the rubber band. Now try to lightly pull your finger away from the ball.

The penguin is trying to jump off the earth even though penguins can't fly.

What are you doing penguin? But what happens?

Not much your finger doesn't get far before the rubber band pulls it back toward the ball. Right? And the effect is the same no matter where your finger penguin is on your earth ball. Whether it's at the top or the side or on the very bottom, the same thing happens the penguin is forced back to earth, no matter how hard it tries to jump off.

So what does this mean?

It means that no matter where on earth an object is the planet's gravitational pull will draw the object toward it and that's how you should think about gravity.

It's the force that pulls things toward Earth. So basically we have gravity to thank for the fact that penguins stick to the bottom of the earth and I for one am grateful.

I like penguins.

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التركيب	في الفيديو
المبني للمجهول be + اسم المفعول — التركيز على ما يحدث لا على من يفعله	is made · is forced
النصيحة بـ “should” should + فعل — قول ما يُستحسن فعله	should think
صيغة المقارنة -er than / more … than — المقارنة بين شيئين	less matter than
المضارع المستمر am/is/are + -ing — شيء يحدث الآن أو في هذه الفترة	is trying · are you doing

تدريب Shadowing: Down to Earth: Crash Course Kids #4.2 - تعلم التحدث بالإنجليزية عبر الفيديو

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