The EM spectrum, Light, and Color Test 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 electromagnetic wave has the lowest energy?

Back

Microwave.

Front

Which electromagnetic wave has the longest wavelength?

Back

Microwaves.

Front

What is the index of refraction?

Back

The index of refraction is a measure of how much light slows down when it enters a medium compared to its speed in a vacuum.

Front

Which medium has a larger index of refraction if Medium 1 is denser than Medium 2?

Back

Medium 1 has a larger index of refraction.

Front

Which electromagnetic wave is primarily associated with heat?

Back

Infrared Rays.

Front

What is the relationship between wavelength and frequency?

Back

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

Front

Which electromagnetic wave has the longest wavelength and lowest frequency?

Back

Radio Waves.

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 400 to 700 nanometers in wavelength.

Front

What are gamma rays?

Back

Gamma rays are high-energy electromagnetic waves with very short wavelengths, often produced by radioactive materials.