Crash Course 4.1 & 4.2 Gravity

Front

What did Sir Isaac Newton determine about objects that go up?

Back

They must come down.

Front

What would happen to everything without the force of gravity?

Back

Everything would fly off into space.

Front

What is the force that pulls objects down toward the Earth?

Back

Gravity.

Front

What happens to a thrown ball after it goes up or sideways?

Back

It will fall to the ground.

Front

When we talk about gravity, what does 'down' mean?

Back

It means toward the Earth.

Front

What is gravity?

Back

A force that attracts two bodies toward each other.

Front

What is the effect of gravity on a dropped object?

Back

It accelerates downward toward the Earth.

Front

How does gravity affect the motion of planets?

Back

It keeps them in orbit around the sun.

Front

What is the relationship between mass and gravity?

Back

More mass means a stronger gravitational pull.

Front

What is weight?

Back

The force of gravity acting on an object.