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

✔ radio wavesgamma raysultraviolet raysinfrared

Revolt · Accepted Answer

radio waves; Selection 1: radio waves; Selection 2: infrared; Selection 3: visible light; Selection 4: gamma rays

Question 3

X-raysradio waves✔ infraredgamma rays

Revolt · Accepted Answer

infrared

Question 4

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

Revolt · Accepted Answer

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 5

lower✔ higherthe same

Revolt · Accepted Answer

higher

Question 6

⇒ gamma

Revolt · Accepted Answer

73620

Question 7

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.

Question 8

What makes thermal imaging cameras useful?

Revolt · Accepted Answer

They can detect differences in temperature.

Question 9

✔ shorterlongerthe same

Revolt · Accepted Answer

shorter; Selection 1: shorter; Selection 2: higher

The Electromagnetic Spectrum Answers

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