Wavelength and Frequency

Front

What is the electromagnetic (EM) spectrum?

Back

The EM spectrum is the range of all types of electromagnetic radiation, which includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

List the EM spectrum in order from the wave that carries the least energy to the wave that carries the most energy.

Back

1. Radio 2. Microwaves 3. Infrared 4. Visible Light 5. Ultraviolet 6. X-ray 7. Gamma

Front

What is wavelength?

Back

Wavelength is the distance between successive crests of a wave.

Front

What is frequency?

Back

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

Front

How are wavelength and frequency related?

Back

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

Front

What type of waves are radio waves?

Back

Radio waves are low-frequency electromagnetic waves.

Front

What type of waves are X-rays?

Back

X-rays are high-frequency 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 (km/s).

Front

What is visible light?

Back

Visible light is the portion of the electromagnetic spectrum that can be seen by the human eye, typically ranging from 400 to 700 nanometers in wavelength.

Front

What are microwaves used for?

Back

Microwaves are used for communication, cooking food, and in radar technology.