Friction

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it comes into contact with another surface.

Front

What happens when you rub your hands together?

Back

Rubbing your hands together creates friction, which produces heat and makes your hands feel warm.

Front

Which action produces the most heat: rubbing, rolling, or bouncing a ball?

Back

Rubbing a ball on the carpet produces the most heat due to friction.

Front

What is an example of friction in sports?

Back

When a runner slides into second base, friction between the runner and the ground produces heat.

Front

How does friction affect temperature?

Back

Friction can increase temperature by converting kinetic energy into thermal energy.

Front

What is an everyday example of friction?

Back

When you walk, the friction between your shoes and the ground helps you move forward.

Front

What happens to the temperature of a surface when friction is applied?

Back

The temperature of the surface usually increases due to the heat generated by friction.

Front

Why do car brakes get hot?

Back

Car brakes get hot because friction between the brake pads and the wheels slows down the car, generating heat.

Front

What is static friction?

Back

Static friction is the force that keeps an object at rest and prevents it from moving.

Front

What is kinetic friction?

Back

Kinetic friction is the force that opposes the motion of an object that is already moving.