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# "Ocean waves are actually a circular movement of the water both above

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Retired Moderator
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"Ocean waves are actually a circular movement of the water both above  [#permalink]

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24 May 2015, 00:24
4
7
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Difficulty:

25% (medium)

Question Stats:

75% (01:12) correct 25% (01:23) wrong based on 503 sessions

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"Ocean waves are actually a circular movement of the water both above and below the surface. Boaters and swimmers see and feel the portion of the wave that is above the surface. As long as the wave is in the deep ocean it will usually not fall in on itself, known as “breaking.” When the bottom of the ocean becomes shallower - specifically when the depth of the water is less than 1.3 times the height of the wave - the wave will break. This occurs because the circular motion of the wave below the water cannot continue and the portion of the wave above the surface builds up until it collapses.

If the statements above are true, which of the following can be inferred?

A) Waves occurring in the deeper parts of the ocean are not dangerous because they usually do not break.

B) Shallow water is the only mechanism that causes waves to break.

C) Swimmers and boaters should avoid areas where waves are breaking.

D) It may be possible to estimate the depth of shallow ocean waters based on the height of breaking waves.

E) Waves occurring in freshwater lakes do not reach the same height as waves in the ocean.

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Re: "Ocean waves are actually a circular movement of the water both above  [#permalink]

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24 May 2015, 02:09
1
WaterFlowsUp wrote:
"Ocean waves are actually a circular movement of the water both above and below the surface. Boaters and swimmers see and feel the portion of the wave that is above the surface. As long as the wave is in the deep ocean it will usually not fall in on itself, known as “breaking.” When the bottom of the ocean becomes shallower - specifically when the depth of the water is less than 1.3 times the height of the wave - the wave will break. This occurs because the circular motion of the wave below the water cannot continue and the portion of the wave above the surface builds up until it collapses.

If the statements above are true, which of the following can be inferred?

A) Waves occurring in the deeper parts of the ocean are not dangerous because they usually do not break.

B) Shallow water is the only mechanism that causes waves to break.

C) Swimmers and boaters should avoid areas where waves are breaking.

D) It may be possible to estimate the depth of shallow ocean waters based on the height of breaking waves.

E) Waves occurring in freshwater lakes do not reach the same height as waves in the ocean.

+1 for D. Line highlighted mentions that depth of shallow waters can be estimated based on the height of breaking waves.
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Re: "Ocean waves are actually a circular movement of the water both above  [#permalink]

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24 May 2015, 05:42
IMO D- rest all options are all wayward and cannot be inferred from the argument. Choice D appropriately states that the depth of shallow ocean waters can be estimated
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Re: "Ocean waves are actually a circular movement of the water both above  [#permalink]

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08 Jun 2016, 12:42
options A,C and E are out of scope or irrelevant options
the use of word ' only ' makes option B incorrect
fom the following statement ' When the bottom of the ocean becomes shallower - specifically when the depth of the water is less than 1.3 times the height of the wave - the wave will break. ' we can can estimate the depth of shallow water
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Re: "Ocean waves are actually a circular movement of the water both above  [#permalink]

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05 Sep 2017, 23:36

In this Inference question, the correct answer must be true, while incorrect answers could be false.

Choice A could be false because the stimulus never discusses the danger posed by deep ocean waves.

Choice B also goes beyond what is discussed in the stimulus; the stimulus indicates shallow water is one cause of waves breaking but maybe not necessarily the only cause.

Choice C uses the word “should” which is usually an indicator of reaching beyond what must be true. The stimulus does not say anything about what portions of the ocean should be avoided.

Choice D is the correct answer as the stimulus provides ample reasons why it may be possible to estimate the depth of water based on the height of breaking waves.

Choice E also goes beyond the stimulus by bringing freshwater lakes into the discussion. It may certainly be true that waves on lakes are not as big as those in the ocean, but this may also be false precisely because it is not discussed by the stimulus.
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Re: "Ocean waves are actually a circular movement of the water both above  [#permalink]

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06 Sep 2017, 00:44
A ,C and E are irrelevant to the argument .
There is a choice between B and D
While there is a case for B but the argument does not have sufficient information to infer B .
We are just told that breaking happens in shallow water .
The can be other reasons for breaking .
D on the other is absolutely correct we can estimate the depth of the shallow waters

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Ocean waves are actually a circular movement of the water both  [#permalink]

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01 May 2018, 03:15
Ocean waves are actually a circular movement of the water both above and below the surface. Boaters and swimmers see and feel the portion of the wave that is above the surface. As long as the wave is in the deep ocean it will usually not fall in on itself, known as “breaking.” When the bottom of the ocean becomes shallower – specifically when the depth of the water is less than 1.3 times the height of the wave – the wave will break. This occurs because the circular motion of the wave below the water cannot continue and the portion of the wave above the surface builds up until it collapses.

If the statements above are true, which of the following can be inferred?

A. Waves occurring in the deeper parts of the ocean are not dangerous because they usually do not break.

B. Shallow water is the only mechanism that causes waves to break.

C. Swimmers and boaters should avoid areas where waves are breaking.

D. It may be possible to estimate the depth of shallow water by measuring the height of the waves breaking there.

E. Waves occurring on freshwater lakes do not reach the same height as waves on the ocean.

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Re: Ocean waves are actually a circular movement of the water both  [#permalink]

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01 May 2018, 03:44
Ocean waves are actually a circular movement of the water both above and below the surface. Boaters and swimmers see and feel the portion of the wave that is above the surface. As long as the wave is in the deep ocean it will usually not fall in on itself, known as “breaking.” When the bottom of the ocean becomes shallower – specifically when the depth of the water is less than 1.3 times the height of the wave – the wave will break. This occurs because the circular motion of the wave below the water cannot continue and the portion of the wave above the surface builds up until it collapses.

If the statements above are true, which of the following can be inferred?

A. Waves occurring in the deeper parts of the ocean are not dangerous because they usually do not break. We aren't given any information about the levels of danger when waves break.

B. Shallow water is the only mechanism that causes waves to break. It isn't said that this is the only mechanism so we can't infer that there aren't any others.

C. Swimmers and boaters should avoid areas where waves are breaking. Not mentioned in the passage/out of scope.

D. It may be possible to estimate the depth of shallow water by measuring the height of the waves breaking there. Correct answer. If a wave breaks the depth must be < 1.3 times the wave height. It may not be a hundred percent precise but it should be good for an estimate.

E. Waves occurring on freshwater lakes do not reach the same height as waves on the ocean. We don't have any information about this issue based on the passage.

Hope that helps
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Re: Ocean waves are actually a circular movement of the water both &nbs [#permalink] 01 May 2018, 03:44
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