Electromagnetic Spectrum

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, infrared, ultraviolet, X-rays, and gamma rays.

Front

What color of visible light has the lowest frequency?

Back

Red has the lowest frequency in the visible light spectrum.

Front

What is wavelength?

Back

Wavelength is the distance from one crest of a wave to the crest of the next wave.

Front

Which electromagnetic waves have the longest wavelength?

Back

Radio waves have the longest wavelength in the electromagnetic spectrum.

Front

What are infrared rays used for?

Back

Infrared rays are used in devices such as heat lamps and TV remote controls.

Front

What electromagnetic radiation has the greatest frequency?

Back

X-rays have the greatest frequency among electromagnetic radiation.

Front

What is the relationship between frequency and wavelength?

Back

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

Front

What are microwaves used for?

Back

Microwaves are used for cooking food and in communication technologies.

Front

What is the speed of light?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s).

Front

What are ultraviolet rays?

Back

Ultraviolet rays are a type of electromagnetic radiation that is not visible to the human eye and can cause sunburn.