Properties of Light

Front

What is a light wave?

Back

A light wave is an electromagnetic wave that is visible to the human eye and can travel through a vacuum.

Front

Why is a light wave not considered a mechanical wave?

Back

A light wave is not considered a mechanical wave because it can travel through the vacuum of space.

Front

What type of wave travels faster: light waves or sound waves?

Back

Light waves travel faster than sound waves.

Front

What are the two main categories of waves?

Back

Mechanical waves and electromagnetic waves.

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.

Front

Which type of wave has the longest wavelength?

Back

Radio waves have the longest wavelengths.

Front

What is the relationship between wavelength and frequency?

Back

Wavelength and frequency are inversely related; as wavelength increases, frequency decreases.

Front

What are gamma rays?

Back

Gamma rays are high-energy electromagnetic waves with very short wavelengths.

Front

Which type of electromagnetic wave has the shortest wavelength?

Back

Gamma rays have the shortest wavelengths.

Front

What is the difference between visible light and ultraviolet light?

Back

Visible light is the portion of the electromagnetic spectrum that can be seen by the human eye, while ultraviolet light has shorter wavelengths and is not visible.