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

Front

What is an electromagnetic wave?

Back

An electromagnetic wave is a wave that can travel through space (a vacuum) or through matter (a medium).

Front

Which color is missing in the sequence: red, orange, yellow, green, blue, ______, violet?

Back

Indigo.

Front

What type of electromagnetic wave is responsible for sunburns?

Back

Ultraviolet radiation.

Front

Why does a green object appear green?

Back

A green object appears green because it absorbs all colors of light except green.

Front

What is emission spectra?

Back

Emission spectra is the range of wavelengths emitted by an atom or compound when stimulated by heat or electric current.

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 (or about 186,282 miles per second).

Front

What is the relationship between wavelength and frequency?

Back

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

Front

What are microwaves used for?

Back

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

Front

What is infrared radiation?

Back

Infrared radiation is a type of electromagnetic radiation with wavelengths longer than visible light but shorter than microwaves, commonly associated with heat.