Friction Review

Front

What type of surface allows a toy car to go the farthest?

Back

Smooth surface

Front

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

Back

False

Front

What do rough surfaces have compared to smoother surfaces?

Back

Greater friction

Front

What is the force that acts in the opposite direction of motion when two surfaces come in contact?

Back

Friction

Front

Why is it harder for a boy to get down a hill on grass compared to ice?

Back

The grass has more friction.

Front

What is friction?

Back

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

Front

What happens to the speed of an object on a rough surface?

Back

It slows down due to increased friction.

Front

What type of friction occurs when an object is not moving?

Back

Static friction

Front

What type of friction occurs when an object is sliding over a surface?

Back

Kinetic friction

Front

How can you reduce friction between two surfaces?

Back

By making the surfaces smoother or using lubricants.