Chapter 3 Lesson 1

Question 0

Electromagnetic Spectrum

Answer 0

The complete range of electromagnetic waves placed in order of increasing frequency. Is made up of radio waves, microwaves, infrared rays, visible light, ultraviolet rays, X-rays, and gamma rays.

Question 1

Electromagnetic Wave

Answer 1

A transverse wave that is made up of vibrating electric and magnetic fields that move through space or some medium at the speed of light.

Question 2

Radio Waves

Answer 2

Electromagnetic waves with the longest wavelengths and lowest frequencies.

Question 3

Microwaves

Answer 3

Electromagnetic waves that have shorter wavelengths and higher frequencies than radio waves.

Question 4

Radar

Answer 4

A system that uses reflected radio waves to detect objects and measure their distance and speed.

Question 5

Infrared Waves

Answer 5

Electromagnetic waves with shorter wavelengths and higher frequencies than microwaves. Carry more energy than microwaves, and are often called heat rays.

Question 6

Thermogram

Answer 6

An image that shows regions of different temperatures in different colors.

Question 7

Visible Light

Answer 7

Electromagnetic waves that you can see.

Question 8

Ultraviolet Rays

Answer 8

Electromagnetic waves with shorter wavelengths and higher frequencies than those of visible light. Carry more energy than visible light and can damage or kill living cells.

Question 9

X-Rays

Answer 9

Electromagnetic waves with shorter wavelengths and higher frequencies than ultraviolet rays. Carry more energy than ultraviolet rays and can penetrate most matter.

Question 10

Gamma Rays

Answer 10

Electromagnetic waves with the shortest wavelengths and highest frequencies. Have the greatest amount of energy and are the most penetrating.