Front

What is motion?

Back

Motion is when an object changes its location.

Front

What is a force?

Back

A force is a push or pull on an object.

Front

What is friction?

Back

Friction is a force that occurs when two objects touch and slows down things that are moving.

Front

What is a simple machine?

Back

A simple machine is a tool that makes work easier, like a lever or inclined plane.

Front

Which of the following is NOT a simple machine: inclined plane, lever, wheel and axle, or mailbox?

Back

Mailbox is NOT a simple machine.

Front

What is a balanced force?

Back

A balanced force occurs when more than one force acts on an object and the forces are the same.

Front

What is an unbalanced force?

Back

An unbalanced force occurs when two or more forces acting on an object are not equal, causing the object to move.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other, like the Earth pulling us down.

Front

What is an example of motion?

Back

An example of motion is a car driving down the road.

Front

How does friction affect motion?

Back

Friction slows down moving objects.