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

Front

What is frequency?

Back

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

Front

What unit is used to measure frequency?

Back

Hertz (Hz) is the unit used to measure frequency.

Front

Which color of visible light has the highest frequency?

Back

The color violet has the highest frequency in the visible light spectrum.

Front

What section of the electromagnetic spectrum can we see?

Back

The visible light section of the electromagnetic spectrum is the only part we can see.

Front

What type of electromagnetic waves does radar use?

Back

Radar uses microwaves to detect objects and measure their distance and speed.

Front

Which type of electromagnetic radiation can be felt as heat?

Back

Infrared radiation can be felt as heat.

Front

What are microwaves used for?

Back

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

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 ultraviolet radiation?

Back

Ultraviolet radiation is a type of electromagnetic radiation that has a wavelength shorter than visible light but longer than X-rays.