Electromagnetic Spectrum Lesson Review

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 types of electromagnetic waves have the highest energy?

Back

Ultraviolet light, x-rays, and gamma rays have the highest energy and can damage living tissue.

Front

How does the sun's energy reach Earth?

Back

The sun's energy travels to Earth through empty space as electromagnetic radiation.

Front

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

Back

Shorter wavelengths correspond to higher energy, while longer wavelengths correspond to lower energy.

Front

What type of wave has both electric and magnetic fields?

Back

Electromagnetic waves have both electric and magnetic fields.

Front

Can electromagnetic waves travel through matter?

Back

Yes, electromagnetic waves can travel through both empty space and matter.

Front

What is visible light?

Back

Visible light is the portion of the electromagnetic spectrum that is visible to the human eye, with wavelengths ranging from approximately 400 to 700 nanometers.

Front

How does the frequency of visible light compare to infrared rays?

Back

Visible light has a higher frequency, higher energy, and shorter wavelength than infrared rays.

Front

What are radio waves used for?

Back

Radio waves are used for communication, including radio and television broadcasting, as well as for cell phone signals.

Front

What is the speed of electromagnetic waves in a vacuum?

Back

Electromagnetic waves travel at the speed of light in a vacuum, which is approximately 299,792 kilometers per second.