When sound travels faster higher in the air than it does closer to the ground,sound bends
A) upward.
B) downward.
C) neither of these
Correct Answer:
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Q13: Sound waves cannot travel in
A)air.
B)water.
C)steel.
D)a vacuum.
Q58: Compressions and rarefactions of sound waves normally
Q59: Infrasonic sound waves have relatively
A)low frequencies.
B)long wavelengths.
C)both
Q61: Some singers are able to shatter a
Q62: The explanation for all types of refraction
Q64: The natural frequency of an object depends
Q65: A bass fiddle is louder than a
Q66: Troops break step when marching across a
Q67: "Sympathetic vibrations" refers to
A)beats.
B)interference.
C)pitch.
D)resonance.
Q68: On days when the air nearest the
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