Gravity and Friction as Forces

Front

What is gravity?

Back

A force that pulls objects toward each other.

Front

Which force must have the objects touching in order for it to work?

Back

Friction.

Front

True or False: The Sun has the greatest pull of gravity, which keeps Earth from floating away in space.

Back

True.

Front

What would happen if there was no gravity?

Back

Everything would float.

Front

True or False: The rougher the surface, the faster an object will travel over the surface.

Back

False.

Front

What is friction?

Back

A force that opposes the motion of an object when it is in contact with another surface.

Front

What happens to an object when it is dropped?

Back

It falls to the ground due to gravity.

Front

What is the relationship between mass and gravity?

Back

The more mass an object has, the stronger its gravitational pull.

Front

What is an example of friction in everyday life?

Back

Rubbing your hands together to create warmth.

Front

How does gravity affect the motion of planets?

Back

Gravity keeps planets in orbit around the Sun.