7. Which of the following statement is CORRECT?
A. The vibrations of a transverse wave move in a direction along the direction of wave travel.
B. The vibrations of a transverse wave are in a direction perpendicular to the direction of travel.
C. The vibrations of a longitudinal wave are in a direction perpendicular to the direction of travel
D. Longitudinal waves are also called surface waves.
10. Some of the wave's energy is always being dissipated as heat which will reduce the wave's ____.
A. amplitude
B. frequency
C. speed
D. wavelength
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Answer:
7.C.
8.D
Explanation:
i think that is the answer