Friction Practice

______________________ is the force that resists the motion of two surfaces that are touching.

• Gravity

• Friction

• Force

• non-contact

A person skiing down a hill is an example of ______________ friction.

• static

• rolling

• sliding

• fluid

A person using a parachute is an example of ______________ friction.

• static

• rolling

• sliding

• fluid

An object that is not moving is an example of _____________ friction.

• static

• rolling

• sliding

• fluid

Without friction, an object in motion would never stop.

• True

• False

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

• metal

• tile

• sand paper

• denim

Compared to smooth surfaces like tile, rough surfaces have a __________ friction.

• higher

• lower

• same

How does friction affect speed?

• More friction decreases speed

• More friction increases speed

• Less friction decreases speed

• Friction does not affect speed

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

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

• The brakes used on a bike

• Tires from a car on the road

• Tread on the bottom of your shoes

• All the options are helpful

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

• Pencil marking on paper

• Engine parts wearing out

• Salt placed on ice in the winter

• Using an eraser to erase marks on paper