Friction

Front

How can friction be reduced?

Back

All of the above are ways of reducing friction: reduce the force acting between the 2 surfaces, reduce the roughness of the 2 surfaces coming in contact, use wax, grease or oil.

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

Rougher surfaces have ...

Back

greater friction

Front

Friction is a force that ________ the motion of an object.

Back

opposes

Front

Sally experiences-
Options: Rolling Friction, Sliding Friction, Fluid Friction, Static Friction

Back

Sliding Friction

Front

Swimming fish experience-
Options: Rolling Friction, Sliding Friction, Fluid Friction, Static Friction

Back

Fluid Friction

Front

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

Back

True

Front

What are 2 factors that determine the amount of friction between 2 objects?

Back

Force and roughness between surfaces

Front

Which of the following is NOT an example of friction?

• using the brakes on your bike to slow you down
• putting your hand out the window
• a satellite traveling through deep space
• a hockey puck going across an ice rink

Back

a satellite traveling through deep space

Front

On which surface will a toy car travel the furthest? Options: Carpet, Polished Wood, Ice

Back

Ice