Friction

What do you need to make a water slide work?

• A long piece of plastic and water

• A long piece of plastic and you

• Water and you

• A long piece of plastic, water, and you

What happens when two things touch?

• They slip and slide

• They create friction

• They become slippery

• They rub against each other

What creates more friction, a rough surface or a smooth surface?

• A rough surface

• A smooth surface

• Both create the same amount of friction

• Friction does not depend on the surface

Why is a water slide slippery?

• Because of the plastic slide

• Because of the grass

• Because of the water

• Because of the friction

Why can you slide on a smooth floor with socks but not with sneakers?

• Socks create more friction than sneakers

• Sneakers create more friction than socks

• Friction does not depend on the footwear

• Both socks and sneakers create the same amount of friction

How does friction affect speed?

• more friction decreases speed
• more friction increases speed
• less friction decreases speed

Tags

NGSS.MS-PS3-1

Rougher surfaces have ...

• greater friction
• less friction
• the same level of friction