5. Friction

Front

How does friction affect speed?

Back

More friction decreases speed.

Front

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

Back

opposite

Front

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

Back

air resistance

Front

Which of the following is an example of friction that is helpful? Options: Brakes used on a bike, Tires from a car on the road, Tread on the bottom of your shoes.

Back

All are examples that are helpful

Front

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

Back

True

Front

What type of friction is not moving? Options: static, sliding, fluid, rolling

Back

static

Front

Which of the following is an example of friction that is harmful? Options: Pencil marking on paper, Engine parts wearing out, sand placed on ice in the winter, Using an eraser to erase marks

Back

Engine parts wearing out

Front

What does friction produce?

Back

heat

Front

What is the unit called that measures force? Options: weight, meter, Newton, kilogram

Back

Newton

Front

Which would make a car move fastest? Options: moving up a steep slope, moving up a gradual slope, moving down a steep slope, moving down a gradual slope

Back

moving down a steep slope