Friction and its Effects

What is friction?

• A force that resists motion

• A force that accelerates motion

• A force that creates motion

• A force that stops motion

What happens when two surfaces are in contact with each other?

• Friction occurs

• Gravity occurs

• Magnetism occurs

• Electricity occurs

On which type of surface does a toy car go the farthest?

• Rough surface

• Smooth surface

• Carpet surface

• Cardboard surface

Why does a smoother surface allow objects to move faster and farther?

• Because it creates more friction

• Because it creates less friction

• Because it creates more grip

• Because it creates less grip

Why do we create rough surfaces when we need more grip?

• To increase friction

• To decrease friction

• To increase grip

• To decrease grip

Why is it difficult to walk on a road covered with ice?

• Because the road is slippery

• Because the road is rough

• Because there is no friction

• Because there is too much friction

Should a pole be smooth or rough if a boy wants to climb it easily?

• Smooth

• Rough

• Neither

• Both

In which situation should there be least friction?

• Bowling game

• Carom board

• Carpet

• Road covered with ice

Why are the surfaces of tires made rough?

• To increase friction

• To decrease friction

• To increase grip

• To decrease grip

On which surface does a striker go farther on a carom board?

• Carom board

• Carpet

• Smooth surface

• Rough surface