TARR: 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 are the two types of friction?

Back

The two types of friction are static friction (when an object is not moving) and kinetic friction (when an object is moving).

Front

How does friction affect movement?

Back

Friction can slow down or stop the movement of objects.

Front

What is an example of harmful friction?

Back

A person slipping on a wet floor is an example of harmful friction.

Front

What is an example of useful friction?

Back

Car brakes stopping a moving vehicle is an example of useful friction.

Front

What happens to speed when there is more friction?

Back

More friction decreases speed.

Front

What happens to speed when there is less friction?

Back

Less friction increases speed.

Front

How can you reduce friction on a surface?

Back

You can reduce friction by adding a lubricant, like oil.

Front

What is a fair test in an experiment?

Back

A fair test is when you keep all variables the same except for the one you are testing.

Front

Why is it important to use the same object in a friction test?

Back

Using the same object ensures that the results are not affected by differences in the objects.