Friction

Friction is..

• a tool that helps you

• a force that helps you to move objects

• a force that slows down a moving object

Friction can poduce heat

• True

• False

When biking, what uses friction to stop the wheel from rotating?

• The tires

• The brakes

• The steering wheel

• The saddle

Ice skaters wear special boots that produce a lot of friction

• True

• False

The friction can differ, depending on what type of material is used

• True

• False

Oil can reduce friction

• True

• False

When it is rainy more accidents happen on the road, because..

• there is a lot of water, there is more friction

• there is no water, there is more friction

• there is a lot of water, there is no friction

• there is a no of water, there is no friction

Tour de France is a cycling contest. These cyclists all wear special clothing. What is the main reason?

• Because it looks pretty

• Because it makes it easier for fans to recognize their favourite cyclist

• Because of safety

• Because it decreases friction

The amount of friction depends on the weight of the objects pressing together

• True

• False

Rougher surfaces have ..

• greater friction

• less friction

• the same level of friction