Properties of Sound Answers

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1
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Which of these can harm the human ear?

A
city traffic
B
fireworks
C
normal conversation
D
rainfall
3

1✔ 234

Answer not available
4

12✔ 34

Answer not available
6

✔ 1234

A
1
B
2
C
3
D
4
7

Order the sounds made by these sources from highest to lowest pitch.

A
telephone, piano, motorcycle, lawn mower
B
lawn mower, motorcycle, piano, telephone
C
motorcycle, telephone, piano, lawn mower
D
lawn mower, piano, telephone, motorcycle
8

Would these two waves produce a standing wave?

A
Yes, because the waves are traveling in opposite directions.
B
Yes, because the waves are traveling in the same direction.
C
No, because the waves do not have the same wavelength.
D
No, because the waves do not have the same amplitude.
9

[___]

A
It is high-pitched.
B
It is low-pitched.
10

It is high-pitched.✔ It is low-pitched.

A
It is high-pitched.
B
It is low-pitched.
11

Which of these can harm the human ear?

A
city traffic
B
fireworks
C
normal conversation
D
rainfall
12

What is the quality of the sound of an ambulance’s siren when it moves toward a stationary hearer?

Answers:
Selection 1:It is high-pitched.
Selection 2:It is low-pitched.
13

Order these sounds from loudest (1) to softest (4).

Answers:
airplane::1
whisper::4
crowd at sporting event::2
rainfall::3
14

123✔ 4

A
1
B
2
C
3
D
✔ 4
15

1✔ 234

A
1
B
✔ 2
C
3
D
4
16

12✔ 34

A
1
B
2
C
✔ 3
D
4
17

Which instrument, a cello or a violin, produces a higher-pitched sound? Explain your answer.

Answer:

The violin produces a higher-pitched sound than the cello. This is because the violin is smaller and has shorter, thinner strings than a cello. Shorter and thinner strings vibrate at a higher frequency, which results in a higher pitch.

18

What is the quality of the sound of an ambulance’s siren when it moves toward a stationary hearer?

Answers:
Selection 1:It is high-pitched.
Selection 2:It is low-pitched.
19

It is high-pitched.✔ It is low-pitched.

A
It is high-pitched.
B
✔ It is low-pitched.

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