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Waves and Sound

Total questions: 49

Worksheet time: 2hrs 41mins

Name
Class
Date
1.
Frequency is defined as...
a)
Number of waves or cycles generated per second.
b)
The maximum displacement of a wave from its equilibrium position.
c)
The time interval between two consecutive waves.
d)
The distance between two identical positions on two consecutive waves.
2.

A wave machine generated waves with a wavelength of 0.080 m at a constant wave speed of 17 m/s. Calculate the frequency of the waves.

a)

212 Hz

b)

1.36 Hz

c)

0.00470 Hz

d)

16.92 Hz

e)

1.36

3.

The speed of sound in air is 340 m/s. The frequency of the sound waves generated by my voice is 720 Hz. Calculate the wavelength of sound of my voice.

a)

380 m

b)

0.472 m

c)

2.11 m

d)

244,800

e)

none of these are correct

4.

A sound wave has a wavelength of 200 m and a frequency of 6 Hz. What is its speed?

a)

1200 m/s

b)

12,280 m/s

c)

0.0031 m/s

d)

1993.8 m/s

e)

none of these are correct

5.
Which wave has the greatest amplitude?
a)
A
b)
B
c)
C
d)
D
6.
The pitch of a sound is most closely related to the
a)
frequency  of the sound waves
b)
distance from the sound source
c)
medium through which the sound travels
d)
intensity of the sound
7.
How loud or soft a sound is, is related to the _____________ of the wave
a)
amplitude
b)
frequency
c)
wave length
d)
rest position
8.
Which wave has the largest wavelength?
a)
A
b)
B
c)
C
d)
None (same wavelength)
9.

Which wave has the highest frequency?

a)

A

b)

B

c)

C

d)

None (same frequency)

e)

none of these are correct

10.

Waves that have vibrations that move perpendicular to the direction the wave are called:

a)

Electromagnetic Spectrum

b)

Transverse Waves

c)

Medium

d)

Light Waves

11.
Sound waves are...
a)
cool
b)
not cool
c)
transverse waves
d)
longitudinal waves
12.
Which type of wave is pictured here?
a)
Longitudinal
b)
Transverse
c)
Light 
d)
Electromagnetic
13.

Which BEST describes this sound?

a)

Starts low pitch and quiet and gets higher pitch and loud

b)

Starts high pitch and quiet and get lower pitch and loud

c)

Starts low pitch and loud and gets higher pitch and quiet

d)

Starts low pitch and quiet and gets higher pitch

14.

The unit for measuring frequency is the ---

a)

Joule

b)

Hertz

c)

Gram

d)

Newton

15.

Between waves B and D, which is louder?

a)

Wave B

b)

Wave D

16.

Between waves F and G, which is lower in pitch?

a)

Wave F

b)

Wave G

17.

Sound is produced by -----

a)

Heat energy

b)

Low temperatures

c)

Vibrations

d)

Friction

18.

True or False: Sound needs a medium.

a)

True

b)

False

19.
The longer the string on an instrument, the _________ the pitch.
a)
lower
b)
higher
c)
softer
20.
What causes sound?
a)
when the pitch is high
b)
when something vibrates
c)
when the volume is loud
21.
My vocal cords ___________ when air passes through them.  This allows me to speak.
a)
stop
b)
vibrate
c)
close
d)
open
22.
Sound can be measured in ________.  It is recommended that humans not be exposed to volumes over 85 _______ for long periods of time. 
a)
decimals
b)
frequency
c)
hertz
d)
decibels
23.
The distance between one peak and the next in a wave
a)
Transpartent
b)
Scattering
c)
Wavelength
d)
Waste Pro
24.
The number of vibrations a wave makes in a given amount of time is a 
a)
Absorption
b)
Medium
c)
Frequency
d)
Photon
25.
High frequency waves have _________ wavelength.
a)
varying
b)
high
c)
the same
d)
low
26.
Which wave in the diagram has the greatest wavelength?
a)
1
b)
2
c)
3
d)
4
27.
One end of the rope is vibrated to produce a wave with a wavelength of .25 m.  The Frequency of the wave is 3.0 Hz.  What is the speed of the wave?
a)
3.00 m/s
b)
2.50 m/s
c)
.75 m/s
d)
1.25 m/s
28.
 A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed of the wave?
a)
500 m/s
b)
50 m/s
c)
5 m/s
d)
0.5 m/s
29.
A wave has wavelength of 10 m and a speed of 340 m/s. What is the frequency of the wave?
a)
34 m/s
b)
3400 Hz
c)
3400 m/s
d)
34 Hz
30.

A guitar string vibrates with a frequency of 320 hz. If the wavelength of the vibration is 0.23 meters what is the speed of the wave?

a)

320.23 m/s

b)

1391.3 hz

c)

73.6 m/hz

d)

73.6 m/s

31.
The blue-throated hummingbird flaps its wings 300 times a minute.  What is its frequency?
a)
5 hz
b)
300 hz
c)
300/60 
d)
a lot?
32.
What property of the wave is represented by the letter "B"?
a)
amplitude
b)
crest
c)
trough
d)
wavelength
33.
A period is
a)
Amount of time it takes a wavelength to complete one cycle.
b)
How many wave lengths happen in a second.
c)
An indication of the amount of energy in a wave.
d)
The distance between two crests or two troughs.
34.

The wavelength of a wave with a velocity of 70 m/s and a frequency of 1500 Hz is

a)

0.05 m

b)

0.55 m

c)

140 m

d)

23 m

35.

Calculate the frequency if a wavelength is 0.11 m and a velocity of 165 m/s

a)

38 Hz

b)

239 Hz

c)

1,500 Hz

d)

2,190 Hz

36.
What is the speed of a 20 Hz with a 4m wavelength?
a)
0.2 m/s
b)
5 m/s
c)
80 m/s
d)
320 m/s
37.

A wave is traveling at 1250 m/s and has a wavelength of 30 m. What is the frequency of this wave?

a)

41.7 Hz

b)

50 Hz

c)

52.5 Hz

d)

19.6 Hz

38.

The "period" is

a)

the time that it takes a complete cycle or wave oscillation to occur.

b)

the number of cycles or vibrations per unit of time.

c)

the rate of vibration within a wave pattern.

39.

If it takes 50 seconds for an object to travel around

a circle 5 times, what is the period of its motion?

a)

5 s

b)

10 s

c)

25 s

d)

40 s

40.
What is the equation for frequency?
a)
f = t/n
b)
f = 1/T
c)
f = 2 T
41.
For a system in simple harmonic motion, which of the following is the number of cycles or vibrations per unit of time?
a)
amplitude
b)
period
c)
frequency
d)
revolution
42.

Define amplitude.

a)

maximum displacement from equlibrium position

b)

total displacement

c)

maximum distance from where the object is released

43.
A cylinder hangs motionless 40 cm below its equilibrium position from a spring with a constant of 50 N/m.  What is the mass of the cylinder?
a)
.8 kg
b)
1.25 kg
c)
2 kg
d)
6 kg
44.
A force of  30 N stretches a very light ideal spring 0.73 m from equilibrium. What is the force constant (spring constant) of the spring?
a)
41 N/m
b)
22 N/m
c)
34 N/m
d)
46 N/m
45.
A simple harmonic oscillator takes 4.8 s to undergo five complete vibrations. What is the frequency of 1cycle? 
a)
1.04 s
b)
4.8 s
c)
1/4.8 s
46.
The period of a pendulum may be decreased by
a)
Increasing the mass of the bob
b)
moving the equilibrium point
c)
decreasing the mass of the bob
d)
shortening the length of pendulum
47.

According to the graph, what is the amplitude of this oscillation?

a)

1 m

b)

2 m

c)

1 s

d)

2.2 s

48.

According to the graph, what is the period for this oscillator?

a)

1 s

b)

2.1 s

c)

0.5 s

d)

5 s

49.

A pendulum oscillates as shown. At which of the following positions is the potential energy equal to the total energy?

a)

A

b)

B

c)

C

d)

Not enough information

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