Comprehension: Big Idea 5

Front

In a hearing aid, electrical energy is changed into __________.

Back

sound waves

Front

The source of electricity for an electric car is a ___________.

Back

battery

Front

Which machine does NOT use an electromagnet?

Back

LED

Front

What does electric current change into after it passes through an LED?

Back

photons

Front

An electric motor changes electrical energy into _____________.

Back

mechanical energy

Front

What is electrical energy?

Back

Energy caused by the flow of electric charge.

Front

What is an electromagnet?

Back

A type of magnet in which the magnetic field is produced by an electric current.

Front

What is a battery?

Back

A device that stores chemical energy and converts it to electrical energy.

Front

What is an electric motor?

Back

A machine that converts electrical energy into mechanical energy.

Front

What is an LED?

Back

A light-emitting diode that emits light when an electric current passes through it.