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