Properties of Waves Answers

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1
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Tara prepared a report to show how the amplitude of waves affects the energy of waves. Is her graphical representation correct? Why or why not?

Answer:

Tara's graphical representation is incorrect. The relationship between the amplitude of a wave and its energy is not linear; instead, the energy of a wave is proportional to the square of its amplitude (E ∝ A²). Therefore, her graph should show an exponential or parabolic curve rather than a straight line to accurately represent how energy increases as amplitude increases.

2
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What did you include in your response? Check all that apply.

A
Sound travels faster in a warm room.
B
The temperature of a medium affects the speed of a wave.
C
The higher the temperature, the more bumping between the particles of the medium and the more instances of energy transfer.
75100

Order the waves from shortest wavelength (1) to longest wavelength (4).

Answers:
Gamma rays::1
Microwaves::3
Radio::4
Visible light::2
75101

12✔ 34

A
1
B
2
C
✔ 3
D
4
75102

123✔ 4

A
1
B
2
C
3
D
✔ 4
75103

1✔ 234

A
1
B
✔ 2
C
3
D
4
75104

⇒ 2.5

Answer:

75104

75105

What did you include in your response? Check all that apply.

A
As the amplitude of a wave increases, the energy it carries also increases.
B
The graph shows that as the amplitude of a wave increases, the energy it carries decreases.
C
The graph shown does not correctly represent the relationship between amplitude and energy.
75107

What order shows increasing frequency for gamma rays, microwaves, visible light, and X-rays?

A
gamma rays, X-rays, visible light, microwaves
B
microwaves, visible light, X-rays, gamma rays
C
visible light, gamma rays, microwaves, X-rays
D
X-rays, microwaves, gamma rays, visible light
75108

Does sound travel faster in a warm room or a cold room? Explain your answer.

Answer:

Sound travels faster in a warm room. This is because higher temperatures cause the air particles to move faster and collide more often, which increases the speed of energy transfer through the medium.

75109

Order the waves from shortest wavelength (1) to longest wavelength (4).

Answers:
Gamma rays::1
Microwaves::3
Radio::4
Visible light::2

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