Light Energy

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, which includes visible light, radio waves, X-rays, and more.

Front

Which waves are not part of the electromagnetic spectrum?

Back

Sound waves are not part of the electromagnetic spectrum.

Front

How does light travel?

Back

Light always travels in a straight line.

Front

What is the highest point on a wave called?

Back

The highest point on a wave is called the crest.

Front

What is the lowest point on a wave called?

Back

The lowest point on a wave is called the trough.

Front

What type of waves can be used to treat cancer?

Back

Gamma waves can be used to treat cancer.

Front

Why do dentists use lead aprons during X-rays?

Back

Dentists use lead aprons to prevent harmful exposure to X-rays.

Front

What is visible light?

Back

Visible light is the part of the electromagnetic spectrum that can be seen by the human eye.

Front

What are radio waves used for?

Back

Radio waves are used for communication, such as in radios and televisions.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second.