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lesson pretestMultiple Choice

Pretest

Question 1 • Physics

Which lists the waves in order of frequency, from highest to lowest?

Answer
A
visible light, infrared, microwaves
B
ultraviolet, microwaves, gamma rays
C
radio waves, visible light, cap x -rays
D
cap x -rays, gamma rays, ultraviolet

Explanation

In the electromagnetic spectrum, frequency decreases in this order: gamma rays, X-rays, ultraviolet, visible light, infrared, microwaves, and radio waves. So visible light has a higher frequency than infrared, which has a higher frequency than microwaves. Choice B lists them from highest to lowest frequency.

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