shore
the lower portion of the wave strikes land first and is stopped.
If
the sea bottom is rising, the water
will therefore be not as deep,
in other words—it will be
shallower
.
417.
b.
The answer is explained in lines 9–17,
and spelled out in lines
16–17:
It is the bottom of a wave striking against the top of the land
that is the cause of all surfs.
418.
a.
As
it is used in the passage,
impetus
most nearly means
a moving
force.
In
this case, a wave is a moving force through the water. If
you did not know the correct definition, the best way to answer
this question
would be to replace
impetus
in the sentence with
each of the given answer choices
to see which one makes the
most sense in context.
419.
a.
The best approach to this question is to reread lines 18–21 for
each answer choice to see which choice is directly supported by
the given text. For this question you would not have to go far to
find the answer:
choice
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