Friction

What does friction produce?

• light

• sound

• heat

• gravity

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

A type of friction that occurs when air pushes against a moving object causing it to decelerate.

• surface area

• air resistance

• velocity

• gravity 

How would the absence of friction affect a marble traveling on a long, straight path?

• The marble’s speed would decrease.

• The marble’s speed would increase.

• The marble would stop immediately. 

• The marble would remain at constant speed.

Tags

NGSS.MS-PS3-5

Which would NOT be a way of reducing friction?

• making the surfaces smoother

• using lubricants such as waxes, oils, or grease

• changing from sliding friction to rolling friction using ball bearings

• Using kitty litter on snow and ice to help your car gain traction

The amount of friction depends on the weight of the objects pressing together.

• True

• False

How does friction affect speed?

• more friction decreases speed

• more friction increases speed

• less friction decreases speed

• less friction doesn't affect speed

Tags

NGSS.MS-PS2-2

Force the opposes motion between 2 surfaces

• force

• Newton

• friction

• net force

When most objects with smooth surfaces rub, there is less friction.

• True

• False

Smooth surfaces such as ice, usually produce less friction.

• true

• false

What type of friction is not moving?

• static

• sliding

• fluid

• rolling