LONGITUDINAL
THUNDER
CRUST
WAVES
ENERGY
MEDIUM
TROUGH
PHYSICS
KINETIC
RAREFACTION
POTENTIAL
AMPLITUDE
FREQUENCY
TRANSVERSE
EARTHQUAKE
WAVELENGTH
HERTZ
F
S
U
X
K
V
N
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F
R
E
Q
U
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N
C
Y
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K
A
U
U
O
D
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M
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H
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K
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B
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