Friction

What is the name of the force when two surfaces rub together?

• gravity

• friction

• push

• pull

Why are ice skating blades smooth?

• to reduce friction

• to increase friction

Why do car tyres have a bumpy pattern?

• to increase the pull of gravity

• to save money

• to reduce friction

• to enable them to grip on different surfaces

Why are parachutes big?

• to increase the speed of the parachute

• to increase the pull of gravity

• to increase air resistance

• to reduce friction

Why do swimmers wear a special suit and hat?

• to reduce water resistance

• to slow them down

• to increase friction

• to stop them getting wet

If I dropped a flat paper and a scrunched paper at the same time which would fall first?

• flat paper

• scrunched paper

• both at the same time

• they would not fall

What is the name of the force that pulls us down to Earth?

• gravity

• friction

• air resistance

• water resistance

Which shape would fall quicker through a tube of water?

• cube

• sphere

• cuboid

• cone