Amplify Chps 3-5 Check

Front

What are balanced forces?

Back

Multiple forces of equal strength acting on an object, resulting in no change in motion.

Front

What does it mean to exert a force?

Back

To cause a force to act on an object.

Front

What is an electromagnet?

Back

A kind of magnet that can be turned on and off.

Front

What is gravity?

Back

The pull between Earth and other objects, which acts even without touching.

Front

Who is an engineer?

Back

A person who uses science knowledge to design something in order to solve a problem.

Front

What are unbalanced forces?

Back

Forces that are not equal in strength and cause a change in motion.

Front

What is a magnet?

Back

An object that can attract certain metals and has a magnetic field.

Front

What is the difference between repel and attract?

Back

Repel means to push away, while attract means to pull closer.

Front

What is a force?

Back

A push or pull that can change the motion of an object.

Front

What is a pole in terms of magnets?

Back

The ends of a magnet where the magnetic force is strongest, usually called north and south poles.