The Science of Sound (R. Johnson)

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1.
vibration
2.
waves
3.
pitch
4.
volume
5.
frequency
6.
medium
7.
echo
8.
eardrum
9.
energy
10.
wave
11.
noise
12.
loudness
13.
amplify
14.
reflection
15.
absorption
16.
speed
17.
distance
18.
source
19.
signal
20.
instrument