Electromagnetic Spectrum

Front

What is the electromagnetic spectrum (EMS)?

Back

The electromagnetic spectrum (EMS) is the range of all types of electromagnetic radiation, which includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Front

True or false: As you move from radio waves to gamma rays in the EMS, the wavelengths decrease in size.

Back

True

Front

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

Back

A wave with a large wavelength has a low frequency and low energy, while a wave with a small wavelength has a high frequency and high energy.

Front

Which electromagnetic wave has the lowest energy?

Back

Microwave.

Front

List the electromagnetic waves in order from longest wavelength to shortest wavelength.

Back

Radio, Microwave, Infrared, Visible Light, Ultraviolet, X-ray, Gamma.

Front

Which electromagnetic wave has the shortest wavelength and therefore the highest frequency?

Back

Gamma Rays.

Front

What type of electromagnetic radiation is used in remote controls?

Back

Infrared radiation.

Front

What is the speed of all electromagnetic waves in a vacuum?

Back

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

Front

What is visible light?

Back

Visible light is the portion of the electromagnetic spectrum that is visible to the human eye, typically ranging from wavelengths of about 400 nm (violet) to 700 nm (red).

Front

What is the primary source of electromagnetic radiation on Earth?

Back

The primary source of electromagnetic radiation on Earth is the Sun.