3rd Grade Science Ch. 5 Review

The change in an object's position.

• force

• motion

• power

• gravity

A push or a pull.

• motion

• gravity

• power

• force

The amount of work done over a certain span of time.

• power

• force

• motion

• work

The force pulling together all objects in the universe.

• work

• gravity

• force

• power

The result of a force applied to an object that causes the object to move.

• friction

• work

• force

• motion

The force that resists motion of one object against another.

• force

• motion

• friction

• gravity

A tool that requires only one force.

• compound machine

• simple machine

• gravity

• friction

A combination of two or more simple machines.

• compound machine

• friction

• force

• simple machine

Who is famous for discovering the laws of motion?

• Leonardo da Vinci

• Sir Isaac Newton

• John Cabot

• Roger Williams

Santiago bikes 20 miles in 2 hours. What is his speed? (distance/time)

• 2 miles per hour

• 15 miles per hour

• 18 miles per hour

• 10 miles per hour