Properties of Sound Waves Answers

1

Free Preview

If the amplitude of a wave increases by a factor of 4, how is the intensity changed?

A

it increases by a factor of 4

B

it increases by a factor of 16

C

it decreases by a factor of 4

D

it decreases by a factor of 16

2

Free Preview

A is a point on a standing wave that appears to be stationary.

Answer not available

3

occurs when the frequency of a forced vibration is the same as the object's natural frequency.

Answer not available

4

A sound wave with a power of 8.8 × 10–4 W leaves a speaker and passes through section A, which has an area of 5.0 m2.

A

1.8 × 10–4 W/m2

B

1.8 × 10–6 W/m2

C

1.6 × 10–4 W/m2

D

1.6 × 10–6 W/m2

5

Four friends, A, B, C, and D are standing varying distances away from a speaker which is producing sound waves.

A

B

C

D

6

Which best describes loudness?

A

the subjective measurement of the intensity of sound

B

the subjective measurement of the wavelength of a sound wave

C

an inherent measurement of the intensity of sound

D

an inherent measurement of the wavelength of a sound wave

7

The subjective perception of frequency is .

Answer not available

8

Look at the two wave diagrams.

A

Wave A has a greater pitch and frequency.

B

Wave B has a greater pitch and frequency.

C

Wave A has a greater pitch but lower frequency.

D

Wave B has a lower pitch but greater frequency.

9

Look at the wave diagram.

A

A graph with time in seconds on the x axis from 0 to 8 and amplitude in meters on the y axis from negative 4 to 4. The wave motion is right away from the origin. The first crest starts at the origin and crosses the x axis at 2 s.

B

A graph with time in seconds on the x axis from 0 to 8 and amplitude in meters on the y axis from negative 4 to 4. The wave motion is right away from the origin. The first crest starts at the origin up to 2 m and crosses the x axis at 2 s.

C

A graph with time in seconds on the x axis from 0 to 8 and amplitude in meters on the y axis from negative 4 to 4. The wave motion is right away from the origin. The first crest starts at the origin up to 3 m and crosses the x axis at 1.7 s.

D

A graph with time in seconds on the x axis from 0 to 8 and amplitude in meters on the y axis from negative 4 to 4. The wave motion is right away from the origin. The first crest starts at the origin up to 3 m and crosses the x axis at 1.7 s.

10

A sound with an intensity greater than dB can cause damage to human ears.

Answer not available

Properties of Sound Waves Answers

More from this Course

TRY EDGENUITY HACKS