Gravity Compilation: Crash Course Kids

A ball you throw in the air.

An apple that drops from a tree.

Even you, when you're on a trampoline at someone's awesome birthday party. But why?

My friends let me introduce you to one of the most wonderful forces in the universe.

It's one we are all experiencing right now without even trying.

Fasten your seat belt because we are going to explore the power of gravity.

If I told you that you just won the lottery what would you do?

If you are like me, you jump up and down and scream.

And after you're done freaking out and jumping in the air you'd (jump) land on your feet, right?

But why would you land back on the ground instead of just floating off into space?

It's because of a little something we called gravity.

Gravity is what pulls everything toward the ground, including you.

Without the force of gravity, there would be no life on Earth.

Air, water, animals, everything would fly off into space.

There'd be no you, no me, no french fries, nada.

Think of gravity like the invisible super glue that holds our massive world together.

You can't see it but it's always there.

An English Scientists named Isaac Newton was the first person to seriously study gravity over 300 years ago.

There's a famous story about him that you might have heard.

Supposedly, Sir Isaac was hanging out underneath an apple tree thinking..

Probably, partly napping when an apple fell from the tree and conked him on the head.

That's when Sir Isaac had an "Aha!" moment.

Why did the apple fall down to the ground, and not up, or sideways?

He realized that a special kind of force which we now know as gravity was acting on all of the objects on Earth.

Pulling them toward it.

Once the apple became too heavy for its stem to hold it anymore,

the gravitational pull of earth brought the apple down into Newton's noggin

Newton also realized it doesn't matter how heavy an object is either.

Whether you're holding an apple or a bowling ball or a feather.

If you let go of it, that suck is going down.

We're gonna make a whole video about this later.

Basically, he determined that what goes up must come down

Sir Isaac was a pretty smart too.

Okay, so you know that if you jump up you'll eventually land back on the ground.

And you know that an apple drop down will land on the ground too.

But what if you throw something in front of you? or the left? or to the right?

To see how gravity will act, pick up the tennis ball or any small round object and hold it in your hand.

Let's toss it on the air and watch it fall to the ground. No surprise here.

Okay. Now pick it up and hold it over your head.