Exploring Friction!

A puck slides along an icy surface. What makes it slow down?

• It runs out of push

• It rubs against the ice

• It runs out of electricity

A boy sits halfway down a grassy slope. What force stops him sliding down?

• Weight

• Gravity

• Friction

On which surface will a toy sled travel the furthest?

• Carpet

• Polished Wood

• Ice

On which surface will a toy sled travel the least distance?

• Carpet

• Polished Wood

• Ice

Tags

NGSS.MS-PS2-2

The rougher the surface....

• the greater the friction.

• the lesser the friction.

• the same level of friction.

Which of the following is an example of trying to increase friction?

• Squirting oil into door hinges

• Spreading sand on icy roads

• Waxing the underneath of skis

Which of the following statements is true?

• Friction is a force that only occurs between solids.

• Friction is a force that occurs only on rough surfaces.

• Friction is a force that only occurs when surfaces touch each other.

Which of the following statements is NOT true?

• Friction can slow things down.

• Friction is never useful.

• Friction can stop things from moving.

Air resistance and water resistance are both examples of friction.

• True

• False

If you poured oil on a wood surface, the friction would...

• be reduced.

• be increased.

• stay the same.