Friction

Which of these best describes friction?

• A rubbing force.

• Something that is slippery.

• Gravity.

• Movement across a smooth surface.

What does friction produce?

• light
• sound
• heat
• gravity

Tags

NGSS.4-PS3-2

Which of these materials do you predict would have the MOST amount of friction

• Metal

• Tile

• Sand Paper

• Denim

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NGSS.2-PS1-1

NGSS.2-PS1-2

How does friction affect speed?

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

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NGSS.3-PS2-1

The rougher the surface, the faster an object will travel over the surface.

• True
• False

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NGSS.4-PS3-1

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

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NGSS.3-PS2-1

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

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NGSS.3-PS2-1

Rougher surfaces have ...

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

The amount of friction depends on how hard objects are pressing together.

• True

• False

Rougher surfaces have ...

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