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Sound SJA

Total questions: 38

Worksheet time: 1hrs 18mins

Name
Class
Date
1.
A disturbance that travels through a medium as a longitudinal wave
a)
sound
b)
wavelength
c)
pitch
d)
frequency
2.
Sound waves are what kind of wave?
a)
Longitudinal
b)
Transverse
c)
Surface
d)
Electromagnetic
3.
If you want to change the pitch of a sound, you have to change the ___
a)
frequency
b)
amplitude
c)
speed
d)
volume
4.
This is the unit used to measure the volume of a sound. 
a)
Decibel
b)
Medium
c)
Vibration
d)
Oscilloscope
5.
This is what you get when sound waves are reflected, or bounce back, off of a hard surface.
a)
Amplitude
b)
Pitch
c)
Volume
d)
Echo
6.

Sound is produced by -----

a)

Heat energy

b)

Low temperatures

c)

Vibrations

d)

Friction

7.
Bending of waves around an object (such as through a doorway)
a)
sound
b)
diffract
c)
pitch
d)
volume
8.

True or False: Sound needs a medium.

a)

True

b)

False

9.

Sound waves are also known as ----- waves.

a)

Compression

b)

Longitudinal

c)

Neither

d)

Both longitudinal and compression

10.

True or False: Sound waves are faster than light.

a)

False

b)

True

11.
As a sound source approaches and then moves past a stationary observer, the observer will hear
a)
a steady rise in pitch
b)
a sudden drop in pitch
c)
a drop in pitch, then a rise in pitch
d)
a rise in pitch, then a drop in pitch
12.
True or False: Can sound travel through a vacuum (space).
a)
True
b)
False
13.
The Doppler effect can cause an apparent change in...
a)
loudness
b)
intensity
c)
pitch
d)
reasonance
14.

The speed of a sound wave depends on

a)

the frequency

b)

the medium

c)

both temperature and medium

d)

the temperature

15.
True or False: Sound travels better through solids than through liquids
a)
True 
b)
False
16.

What is pitch?

a)

highness or lowness of a sound

b)

the intensity of a vibration

c)

the amplitude of the sound wave

d)

volume of sound

17.

A note is played on a guitar. Next, a lower note is played on the guitar. Which of these statements describes the lower note?

a)

Both strings vibrated at the same speed.

b)

The second string vibrated slower.

c)

The second string vibrates at a higher frequency.

d)

The second string vibrated faster.

18.
Sound waves move more quickly through _________________ matter
a)
dense
b)
light
19.
How does a sound wave interact with a human ear?
a)
vibrates the ear drum
b)
bounces off the ear canal
c)
rotates the ear drum
d)
vibrates the ear canal
20.
What unit is the intensity of sound measured in?
a)
decibels (dB)
b)
Hertz (Hz)
c)
meters per second (m/s)
d)
meters
21.
If the distance represented by the letter A were increased, how would it change the way the sound was heard?
a)
The sound would be higher. 
b)
The sound would be lower. 
c)
The sound would be softer. 
d)
The sound would be louder. 
22.
Material (matter) through which a wave travels
a)
medium
b)
Doppler Effect
c)
sound
d)
pitch
23.
A wave in which the vibration is in the same direction as that in which the wave is traveling; sound waves
a)
longitudinal wave
b)
ocean wave
c)
transverse wave
d)
mechanical wave
24.
A reflected sound wave
a)
frequency
b)
pitch
c)
echo
d)
rarefaction
25.
A wave that requires a medium through which to travel
a)
mechanical wave
b)
chemical wave
c)
electromagnetic wave
d)
pitch
26.
You and your father inspect an empty house with the hopes of buying it. You walk through the rooms talking to one another, and you notice that your voices and footsteps are echoing in the big, empty house. What causes the echo?
a)
sound waves reflecting off smooth, flat surfaces throughout the house
b)
sound waves moving around the large rooms
c)
sound waves moving slowly through air
d)
sound waves refracting around corners in the empty rooms
27.
Cletus wants to make ear protectors for people who work around loud jet engines at Hartsfield Airport in Atlanta. Which of the following materials should he experiment with for the best results?
a)
a material that produces sound
b)
a material that absorbs sound
c)
a material that transmits sound
d)
a material that amplifies sound
28.

As the fire truck approached Mary, the pitch of the siren got higher. Once the fire truck passed and moved away, the siren's pitch got lower. This change in pitch is because of a change in the sound wave's perceived (heard)

a)

concussion.

b)

amplitude.

c)

reflection.

d)

frequency.

29.
After the train passed, the pitch of the train whistle became lower. This change in sound would be represented by what change in the diagram above? 
a)
The distance represented by C would increase. 
b)
The distance represented by C would decrease. 
c)
The distance represented by D would increase. 
d)
The distance represented by D would decrease. 
30.
Which of the following would you hear as a low pitched sound? 
a)
sound wave with a frequency of 50 Hz
b)
sound wave with frequency of 10,000 Hz
c)
sound wave with an intensity of 10 dB
d)
sound wave with an intensity of 100 dB
31.

The number of wavelengths that pass a fixed point each second is known as ----

a)

Hertz

b)

Amplitude

c)

Frequency

32.

The speed of sound depends on these two things:

a)

The type of medium and the temperature of the medium

b)

Speed of the medium and temperature of the medium

c)

Temperature of the medium and sound of the medium

d)

None of the above

33.
The moving black dot is called:
a)
a node
b)
an anti-node
c)
an anti-amplitude
d)
the wangy bit
34.
The stationary dot is called:
a)
a node.
b)
an anti-node.
c)
the amplitude.
d)
the not moving bit.
35.
Sound will travel through water at 20⁰ C faster than 80⁰ C.
a)
True
b)
False
36.
Reverberation (echoes) in concert halls is caused by ___ of sound.
a)
reflections
b)
echolocation
c)
refractions
d)
diffusions
37.
___ is when two frequencies match up and increase in amplitude.  Example:  Singers can make a glass break by matching its frequency.
a)
Pitch
b)
Resonance
c)
Frequency
d)
Ultrasound
38.

Supersonic is...

a)

moving slowly

b)

moving faster than 100 miles per hour

c)

Moving at a speed greater than the speed of sound waves in the air

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