Friction

What does friction produce?

• light
• sound
• heat
• gravity

Tags

NGSS.4-PS3-2

How does friction affect speed?

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

Tags

NGSS.3-PS2-1

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

• True
• False

Tags

NGSS.4-PS3-1

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

• similar
• opposite
• parallel
• west

Tags

NGSS.3-PS2-1

Rougher surfaces have ...

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

Which of the following is an example of friction that is helpful?

• Brakes used on a bike
• Tires from a car on the road
• Tread on the bottom of your shoes
• All are examples that are helpful

you can walk because there is friction between your __________ and ______________

• ground and air

• feet and ground

• feet and air

• air and ground

friction helps you write on a paper or black board.

• true

• false

 What is the unit called that measures force?

• weight
• meter
• Newton
• kilogram

Tags

NGSS.MS-PS2-1

material with _______________ surfaces have less friction

• smooth

• rough

• both