Unit 5A Test Review

Front

What are radio waves?

Back

Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light.

Front

Do radio waves cause glow in the dark stars to fluoresce?

Back

No, because radio waves have long wavelengths.

Front

What is the main difference between electromagnetic waves and mechanical waves?

Back

EM waves can travel through empty space, while mechanical waves require a medium.

Front

What is frequency in the context of waves?

Back

Frequency is the number of waves that pass a point in one second, measured in Hertz (Hz).

Front

How does the energy of waves relate to wavelength?

Back

The energy of waves increases as the wavelength gets shorter.

Front

List the colors of the visible light spectrum in order of increasing wavelength.

Back

Violet, blue, green, yellow, orange, red.

Front

What is wavelength?

Back

Wavelength is the distance between successive crests of a wave.

Front

What is amplitude?

Back

Amplitude is the height of the wave from the rest position to the crest.

Front

What is the relationship between frequency and wavelength?

Back

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

Front

What is the speed of electromagnetic waves in a vacuum?

Back

The speed of electromagnetic waves in a vacuum is approximately 3 x 10^8 meters per second.