Suppose that a source of sound is emitting waves uniformly in all directions. If you move to a point twice as far away from the source, the frequency of the sound will be
A) unchanged.
B) half as great.
C) as great.
D) twice as great.
E) one-fourth as great.
Question 2
Isotopic analysis of a rock can tell us
A) what the rock is made of
B) the detailed geological history of the rock
C) the temperature and pressure conditions under which it formed
D) when the rock formed