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Sound
Test Description: Sound
Instructions: Answer all questions to get your test result.
1) How high or low a sound is is the ____________.
A
pitch
B
volume
C
frequency
D
vibration
2) A back-and-forth movement of matter is its _____________.
A
vibration
B
volume
C
frequency
D
pitch
3) The number of vibrations per second is the _____________.
A
vibration
B
volume
C
frequency
D
pitch
4) The loudness of a sound is the __________________.
A
frequency
B
volume
C
pitch
D
vibration
5) The more energy a sound has, the greater its _______________________.
A
reflection
B
pitch
C
volume
D
refraction
6) Sound is measured in units called __________________________.
A
hertz
B
decimeters
C
light waves
D
decibels
7) The softest sound a human can hear is ____________ dB.
A
100
B
200
C
0
D
10
8) Sounds above ____________________ dB can cause pain and can damage a person's ears.
A
100
B
200
C
50
D
0
9) Sound travels through the air as ____________________________.
A
jumps
B
waves
C
strings
D
lines
10) A sound that bounces off a surface is called an ________________________.
A
frequency
B
vibration
C
echo
D
pitch
11) The longer the string, the _____________________ the sound.
A
lower
B
shorter
C
higher
D
louder
12) Sound travels best through ____________________.
A
gases
B
air
C
solids
D
liquids
13) Why can't sound be heard in space?
A
Because there are no solids in space.
B
Because there is no air in space.
C
Because space is too big.
D
Because there are no liquids in space.
*select an answer for all questions
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