WorksheetsCH 17 8th Grade Science Sound Putman
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
To produce sound, an object must be ____.
a)
moving toward the listener
b)
vibrating
c)
heated
d)
in a gas
2.
You produce speech by vibration of the ____.
a)
throat bones
b)
skin
c)
lips
d)
vocal cords
3.
____ is the human perception of the energy a wave carries.
a)
loudness
b)
speech
c)
wave
d)
frequency
4.
Hearing damage begins to occur at sound levels of about ____ decibels.
a)
25
b)
65
c)
85
d)
125
5.
____ is made of sounds that are irregular and disorganized.
a)
doppler effcet
b)
loudness
c)
noise
d)
music
6.
Sound travels fastest in a ____.
a)
gas
b)
liquid
c)
solid
d)
vacuum
7.
When you speak, your words are transferred to a friend ____.
a)
by molecules colliding
b)
by electromagnetic waves
c)
in between air molecules
d)
by transverse waves
8.
You can hear sound around an open door because sound waves ____.
a)
reflect
b)
refract reflect
c)
diffuse
d)
diffract
9.
The number and intensity of ____ produced by each instrument are different and give instruments their distinctive sound quality.
a)
overtones
b)
beats
c)
vibrations
d)
pitches
10.
Resonance can be used to ____ sound.
a)
Amplify
b)
increase
c)
decrease
d)
modulate
11.
A combination of sounds with distinct pitches and a specific pattern is ____.
a)
music
b)
constructive collision
c)
beat
d)
noise
12.
The lowest frequency produced by a vibrating string is the ____ frequency.
a)
natural
b)
family
c)
basic
d)
fundamental
13.
Most musical instruments have something that vibrates linked to a ____.
a)
voice box
b)
resonator
c)
pipe
d)
hole
14.
Reverberation in concert halls is caused by ____.
a)
reflection
b)
deflection
c)
reflexation
d)
difference
15.
Hearing loss in people over 65 is usually due to ____.
a)
thickening of the drum
b)
nerve damage
c)
damage to the oval window
d)
hair-cell damage
16.
The part of the ear that transfers sound vibrations to the cochlea is the ____.
a)
eardrum
b)
hair cells
c)
oval window
d)
ear canal
17.
The unit for measuring pitch is the ____________________.
a)
base unit
base unit
base unit
b)
wave
c)
hertz
d)
newton
18.
Because sound is a wave, it can be described by its ____________________ and ____________________.
a)
refraction, defraction
b)
inflection, deflection
c)
wavelength and frequency
d)
sound, loudness
19.
A reflected sound wave is called a(n) ____________________.
a)
echo
b)
reverb
c)
verb
d)
endoecho
20.
The change in the frequency of a sound because of the motion of the source is ____________________.
a)
echo
b)
Doppler Effect
c)
wavelenght
wavelength
wavelength
d)
ellipse
100 %
