Refraction occurs for both sound and light. When refraction occurs there is a change in
A) frequency.
B) wavelength.
C) speed.
D) all of the above.
When sound travels faster near the ground than above, bending of sound tends to be
E) upward.
F) downward.
G) neither of these.
Correct Answer:
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A)fast-moving molecules.
B)evaporation.
C)open-structured