Electromagnetic Spectrum

Front

What are electromagnetic waves?

Back

Electric & magnetic fields (energy) that travel through empty space very quickly.

Front

What part of the electromagnetic spectrum is visible to the human eye?

Back

Only a small part.

Front

What type of electromagnetic waves help your body produce vitamin D?

Back

Ultraviolet rays.

Front

How do electromagnetic waves differ from sound waves?

Back

Electromagnetic waves can travel through empty space, while sound waves require a medium.

Front

What happens to the wavelength of electromagnetic waves as their frequency increases?

Back

High frequency waves have short wavelengths.

Front

What are the different types of electromagnetic waves in the spectrum?

Back

Radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, gamma rays.

Front

What is the speed of electromagnetic waves in a vacuum?

Back

Approximately 299,792 kilometers per second (the speed of light).

Front

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

Back

Wavelength and frequency are inversely related; as one increases, the other decreases.

Front

What are gamma rays and where do they fall in the electromagnetic spectrum?

Back

Gamma rays are high-frequency electromagnetic waves with very short wavelengths, found at the far end of the spectrum.

Front

What is the primary source of ultraviolet rays?

Back

The Sun.