Lesson 6.2 The Electromagnetic Spectrum

Question 1

What is the difference between a mechanical wave and an electromagnetic wave?

Revolt · Accepted Answer

A mechanical wave travels through matter, while an electromagnetic wave travels through empty space.

Question 2

Question 2

Revolt · Accepted Answer

gamma

Question 3

Use the drop-down menus to identify the electromagnetic waves.

Revolt · Accepted Answer

✔ radio waves; radio waves; Label C:: infrared; Label D:: visible light; Label G:: gamma rays

Question 4

X-raysradio waves✔ infraredgamma rays

Revolt · Accepted Answer

✔ infrared

Question 5

Infraredgamma raysmicrowaves✔ visible light

Revolt · Accepted Answer

✔ visible light

Question 6

infrared✔ gamma raysradio wavesvisible light

Revolt · Accepted Answer

✔ gamma rays

Question 7

What are three ways in which people use microwaves?

Revolt · Accepted Answer

Three ways people use microwaves include cooking and heating food in microwave ovens, transmitting signals for cell phones and television, and using radar for weather tracking and navigation.

Question 8

✔ shorterlongerthe same

Revolt · Accepted Answer

✔ shorter; Compared to visible light, the wavelength of X-rays is and the frequency is .: shorter; Compared to visible light, the wavelength of X-rays is and the frequency is .: higher

Question 9

lower✔ higherthe same

Revolt · Accepted Answer

✔ higher

Question 10

Which are characteristics of electromagnetic waves? Check all that apply.They travel only through matter.Waves with a higher frequency have a shorter wavelength.Waves with a higher frequency have a longer wavelength.They all move at the same speed.They can travel through space.

Revolt · Accepted Answer

Waves with a higher frequency have a shorter wavelength.; They all move at the same speed.; They can travel through space.

Lesson 6.2 The Electromagnetic Spectrum Answers

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