AnswersBHS-Physics B-CRUnit Test

Electromagnetic Waves Answers

10 verified answers2 views
1
Free Preview

Which best describes electromagnetic waves moving from gamma rays to radio waves along the electromagnetic spectrum?

A
Wavelength and frequency decrease.
B
Wavelength and frequency decrease.
C
Wavelength and frequency increase.
D
Wavelength and frequency increase.
E
Wavelength increases, and frequency decreases.
F
Wavelength increases, and frequency decreases.
G
Wavelength decreases, and frequency increases.
H
Wavelength decreases, and frequency increases.
2
Free Preview

Radio stations use electromagnetic waves for broadcasting. The chart shows different frequencies of waves used by radio stations.

Question illustration
A
W
B
X
C
Y
D
Z
3

"5.9"

Answer:

102083

4

Wave Y and wave Z are two types of electromagnetic waves traveling through a vacuum. Suppose the frequency of wave Y is about three times greater than the frequency of wave Z.

A
It is the same for each wave because the amount of energy transferred is constant in all types of electromagnetic waves.
B
Wave Y transfers about one-third the amount of energy as wave Z because energy and frequency have an inverse relationship.
C
Wave Y transfers about three times the amount of energy as wave Z because energy and frequency have a direct relationship.
D
It is zero for each wave because when waves travel through a vacuum, they do not transfer energy.
5

A cell phone company relies on which kind of waves in order to provide service for its customers?

A
ultraviolet waves
B
ultraviolet waves
C
infrared waves
D
infrared waves
E
gamma rays
F
gamma rays
G
microwaves
H
microwaves
6

Which describes the relationship between the frequency, wavelength, and speed of a wave as the wave travels through different media?

A
As speed changes, wavelength changes and frequency remains constant.
B
As speed changes, frequency changes and wavelength remains constant.
C
As speed changes, wavelength and frequency change.
D
As speed changes, wavelength and frequency remain constant.
7

Isla made a diagram to compare X-rays and radio waves.What should Isla write in the areas marked A, B, and C?

Question illustration
A
A: Has a longer wavelength B: Can travel only through matterC: Has a higher frequency
B
A: Has a higher frequencyB: Can travel only through matterC: Has a longer wavelength
C
A: Has a higher frequencyB: Travels at the same speedC: Has a longer wavelength
D
A: Has a longer wavelength B: Travels at the same speedC: Has a higher frequency
8

As the frequency of electromagnetic waves increases, what happens to the wavelength?

A
It increases.
B
It decreases.
C
It fluctuates.
D
It remains constant.
9

A lab technician needs to clean medical instruments that have been exposed to bacteria. Which electromagnetic wave would be most useful for this task?

A
infrared
B
radio
C
ultraviolet
D
microwave
10

The diagram shows changing wavelengths along the electromagnetic spectrum.

Question illustration
A
Y: UltravioletZ: Radio
B
Y: Gamma raysZ: Visible light
C
Y: X-raysZ: Infrared
D
Y: RadioZ: Gamma rays

Did you find these answers helpful?

More from this Course

Quiz
10 verified answers

Reflection and Refraction

Quiz
10 verified answers

Diffraction

Quiz
9 verified answers

Mirrors

Electromagnetic Waves Answers — BHS-Physics B-CR