The Electromagnetic Spectrum Answers

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g
gamma rays
m
microwaves
r
radio waves
X
X-rays
3

Kamala made a table to describe parts of the electromagnetic spectrum.What mistake did Kamala make?

Question illustration
A
Gamma rays should have a very high frequency, not a very low frequency.
B
Visible light should have a low frequency and a long wavelength.
C
Infrared light should have a short wavelength, not a long wavelength.
D
Microwaves should have a high frequency and a short wavelength.
4

How can electromagnetic waves be used to fight a forest fire?

A
Gamma ray images can show hot spots as radioactive areas.
B
Ultraviolet images can show hot spots as fluorescent areas.
C
X-ray images can show hot spots as white areas.
D
Infrared images can show hot spots as red areas.
5

Some snakes have special sensory organs that detect the infrared region of the electromagnetic spectrum. Compared with human vision, these snakes can sense electromagnetic waves that have

a
a lower frequency and a shorter wavelength.
a
a higher frequency and a longer wavelength.
a
a lower frequency and a longer wavelength.
a
a higher frequency and a shorter wavelength.
6

Which two types of electromagnetic waves have higher frequencies than the waves that make up ultraviolet light?

r
radio waves and infrared light
v
visible light and X-rays
m
microwaves and gamma rays
g
gamma rays and X-rays
7

The energy of microwaves is less than the energy of ultraviolet light. Which comparison of the energies of electromagnetic waves is correct?

A
X-rays have lower energy than gamma rays because X-rays have higher frequencies.
B
X-rays have lower energy than gamma rays because X-rays have shorter wavelengths.
C
Visible light has higher energy than infrared light because visible light has longer wavelengths.
D
Visible light has higher energy than infrared light because visible light has higher frequencies.
8

Quentin made a table to summarize uses of electromagnetic waves.

Question illustration
m
music broadcasts
l
luggage inspections
n
night-vision goggles
d
digital photographs
10

Which describes the changes in visible light moving from red to violet?

T
The energy increases.
T
The speed decreases.
T
The wavelength increases.
T
The frequency decreases.

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