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Sound Physical Science

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

Which of the following is the main factor that affects the speed of a wave?

a)

the pitch of sound

b)

the loudness of sound

c)

the amplitude of sound

d)

the properties of the medium the sound travels through

2.

What is the wavelength of a 264-Hz sound wave when the speed of sound is 345 m/s ? (v = λ⋅f)

a)

0.77m

b)

1.31m

c)

6.09m

d)

9.11m

3.

Through which medium does sound travel fastest?

a)

gas

b)

liquid

c)

solid

d)

vacuum

4.

Which letter represents the wavelength?

a)

A

b)

B

c)

C

d)

D

e)

E

5.

When sound travels through the air, the sound wave moves in the same direction that it displaces particles. Sound is a ___ wave.

a)

electromagnetic

b)

longitudinal

c)

transverse

d)

surface

6.

What type of interference is being shown in the picture?

a)

Constructive

b)

Destructive

7.

The amount of energy a sound wave carries per second through a unit of area is its ______________.

a)

pitch

b)

intensity

c)

loudness

d)

frequency

8.

Loudness of waves is measured in ______________.

a)

hertz

b)

decibels

c)

watts

d)

meters/second

9.

The apparent change in frequency as a wave source moves in relation to the listener is the ___________.

a)

Doppler Effect

b)

Doppler Radar

c)

Doppelganger

10.

What occurs when vibrations traveling through an object match the object's natural frequency?

a)

reflection

b)

diffraction

c)

resonance

d)

refraction

11.

Sound waves cannot carry energy through

a)

water

b)

air

c)

space

d)

a mirror

12.

Distance Z is a measure of

a)

amplitude

b)

frequency

c)

wavelength

d)

wave speed

13.

What is the primary factor that determines the pitch of a sound?

a)

The speed of sound

b)

The frequency of the sound wave

c)

The amplitude of the sound wave

d)

The medium through which sound travels

14.

If the speed of sound in air is 343 m/s, what is the frequency of a sound wave with a wavelength of 0.5 meters? (Use the formula v=λ⋅fv = \lambda \cdot f )

a)

686 Hz

b)

171.5 Hz

c)

343 Hz

d)

68.6 Hz

15.

Which of the following best explains why sound cannot travel through a vacuum?

a)

Sound waves require a medium to carry vibrations

b)

Sound waves are absorbed by vacuum

c)

Sound waves are too weak to travel through vacuum

d)

Sound waves are reflected by vacuum