electromagnetic spectrum

Front

What is the electromagnetic spectrum?

Back

The electromagnetic 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

Which EM waves have the lowest frequency?

Back

Radio waves have the lowest frequency in the electromagnetic spectrum.

Front

Which EM waves have a shorter wavelength than visible light?

Back

X-rays have a shorter wavelength than visible light.

Front

What do electromagnetic waves NOT need to transfer energy?

Back

Electromagnetic waves do not need matter to transfer energy; they can travel through a vacuum.

Front

Which color of visible light has the shortest wavelength?

Back

Violet light has the shortest wavelength in the visible spectrum.

Front

Which color of visible light has the lowest frequency?

Back

Red light has the lowest frequency in the visible spectrum.

Front

What is the relationship between wavelength and frequency in electromagnetic waves?

Back

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

Front

What type of electromagnetic radiation is used in microwave ovens?

Back

Microwaves are the type of electromagnetic radiation used in microwave ovens.

Front

What is the speed of electromagnetic waves in a vacuum?

Back

The speed of electromagnetic waves in a vacuum is approximately 299,792 kilometers per second (or about 300,000 kilometers per second).

Front

What is infrared radiation commonly used for?

Back

Infrared radiation is commonly used for remote controls, thermal imaging, and heating.