Sound can travel through water for enormous distances, : GMAT Sentence Correction (SC)
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# Sound can travel through water for enormous distances,

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Sound can travel through water for enormous distances, [#permalink]

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03 Sep 2012, 08:46
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Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy as a result of boundaries in the ocean created by water layers of different temperatures and densities.
1)same as underlined
2)prevented from having its acoustic energy dissipated by
3) its acoustic energy prevented from dissipating by
4) its acoustic energy prevented from being dissipated as a result of
5) preventing its acoustic energy from dissipating by

I need proper explanations that why correct answer is correct and why incorrect ones are not correct.

If you think that this is a good question, then kudo me.

Will post the OA after some discussion.
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03 Sep 2012, 09:08
forum/set26-37-sound-can-travel-through-water-for-enormous-77588.html
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03 Sep 2012, 09:15
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vishal2302 wrote:
forum/set26-37-sound-can-travel-through-water-for-enormous-77588.html

I already did that but was dissatisfied. That's why this time I am counting on experts. By the way if you know the explanation, then it would be great if share it on this forum.
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03 Sep 2012, 11:59
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Hi Buddy : Plz find an explanation from the magical Stacey Koprince of MGMAT

The excerpt :

This is an OG question, so I can't discuss it directly, but I can discuss a similar sentence that I make up...

The debate here is between these two "types" of sentences:

1) Light can travel through space for huge distances, its energy prevented from dissipating by X.

2) Light can travel through space for huge distances, preventing its energy from dissipating by X.

The word "prevented" can be a regular conjugated verb or it can be a participle. If it's a participle, it can be part of a verb form (with another conjugated verb before it) or it can indicate a modifier. Examples of the two verb options:

"prevented" as regular conjugated verb: I prevented my paper from blowing away.

Conjugated verb + "prevented" participle: My paper was prevented from blowing away. (The paper was prevented by me.)

Now, what is the difference in those two sentence constructions? The first is active; the second is passive. In the first, the subject (I) is doing the action (prevented). In the second, the subject (paper) is having the action performed on it (I'm still doing the preventing, not the paper).

Could I write: "The paper prevented from blowing away" - meaning, the paper prevented itself from blowing away? Nope. The paper can't prevent itself from blowing away. If we want to use "the paper" as the subject, we have to write this in passive voice.

So. Energy prevented from dissipating by X. Is that a sentence? Can the energy prevent itself from dissipating? No, again. If we want to use "energy" as a subject and have an independent clause here, we have to write this in passive voice, which would be "the energy WAS prevented from dissipating by X."

What does that mean? That word "prevented" is not a conjugated verb or part of a conjugated verb form in this sentence. Therefore, it's a modifier and the stuff after the comma in C is NOT an independent clause - it's the rest of the modifier.

Now, #2.
2) Light can travel through space for huge distances, preventing its energy from dissipating by X.

We have <independent clause>, <-ing modifier>. The -ing modifier needs to modify the preceding clause. Also, the modifier needs to follow from the independent clause; that is, something in the independent clause needs to be doing this "preventing." What is doing this preventing?

Argh. It's the stuff after the word "by." That's not part of the independent clause. Nothing in the independent clause is responsible for "preventing the energy from dissipating." This is a misplaced modifier.

If it's too confusing to understand based on the example above, try this:

Paper can fly through the air for huge distances, preventing it from falling by gusts of wind.

What's preventing the paper from falling? The gusts of wind. But the "preventing" has to refer to the stuff *before* the comma. Nothing *before* the comma is actually preventing the paper from falling.
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03 Sep 2012, 12:22
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Sorry to say, but I really don't think this explanation is satisfactory.
As per the options in the OG question concerned, the "sound" is acting as the object in the second option.
Moreover if you can explain the subtle changes in the meaning of B and C, it would be great. What is the difference between "sound is prevented from dissipating its acoustic energy" and "its acoustic energy is prevented from dissipating". I mean to say, in both cases acoustic energy is being dissipated then what is the issue. I can eliminate the wrong ones by POE but I really want to understand the meaning.
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03 Sep 2012, 12:55

1, 2 and 5..meaning is not right. sound is not preventing the enerery..and the modifiers prevented and preventing do not modify sound correctly..

4. energy prevented from being dissipated as a result of--is awakward
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03 Sep 2012, 13:24

Excellent explanation given by Stacey and sharted by skmskm. Cheers.
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03 Sep 2012, 17:27
Capricorn369 wrote:

Excellent explanation given by Stacey and sharted by skmskm. Cheers.

Can you elaborate the difference in meaning between b and c.
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03 Sep 2012, 21:09
siddharthasingh wrote:
Capricorn369 wrote:

Excellent explanation given by Stacey and sharted by skmskm. Cheers.

Can you elaborate the difference in meaning between b and c.

Plz have a look at Stacey's post :

B : Could I write: "The paper prevented from blowing away" - meaning, the paper prevented itself from blowing away? Nope. The paper can't prevent itself from blowing away. If we want to use "the paper" as the subject, we have to write this in passive voice.

So. Energy prevented from dissipating by X. Is that a sentence? Can the energy prevent itself from dissipating? No, again. If we want to use "energy" as a subject and have an independent clause here, we have to write this in passive voice, which would be "the energy WAS prevented from dissipating by X."

C : Paper can fly through the air for huge distances, preventing it from falling by gusts of wind.

What's preventing the paper from falling? The gusts of wind. But the "preventing" has to refer to the stuff *before* the comma. Nothing *before* the comma is actually preventing the paper from falling.
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03 Sep 2012, 23:57
Hey sks,
lets break the entire sentence into clauses.
1) Sound can travel through water for enormous distances.
2) Sound is prevented from dissipating its acoustic energy as a result of boundaries in the ocean created by water layers of different temperatures and densities.

In your explanation you have stated that energy prevented itself ......
IMO subject is SOUND.
that's why I have been asking for the differences in the meanings of B and C.
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04 Sep 2012, 00:59
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siddharthasingh wrote:
Hey sks,
lets break the entire sentence into clauses.
1) Sound can travel through water for enormous distances.
2) Sound is prevented from dissipating its acoustic energy as a result of boundaries in the ocean created by water layers of different temperatures and densities.

In your explanation you have stated that energy prevented itself ......
IMO subject is SOUND.
that's why I have been asking for the differences in the meanings of B and C.

Sorry my bad : plz read my earlier post options as C n E and not B n C ( Just an oversight , was under the thought that u wanted a clarification wrt C n E)

back to the question : Diff bxn B n C

B : is wrong because of the -ed modifier

-ed modifiers tend to modify the closest noun , thus in B = Prevent -ED is wrongly modifying Distances whereas it should modify Accoustic Energy :the accoustic energy is Prevented ........ not the distance.

C : Sound travels a longer distance ..................... ( How is this possible ? )........... because its energy is prevented from dissipating by X = The terminal portion in C after the comma is nothing but a modifier stating how it is possible for Sound to travel longer distances.

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04 Sep 2012, 02:34
skmskm wrote:
siddharthasingh wrote:
Hey sks,
lets break the entire sentence into clauses.
1) Sound can travel through water for enormous distances.
2) Sound is prevented from dissipating its acoustic energy as a result of boundaries in the ocean created by water layers of different temperatures and densities.

In your explanation you have stated that energy prevented itself ......
IMO subject is SOUND.
that's why I have been asking for the differences in the meanings of B and C.

Sorry my bad : plz read my earlier post options as C n E and not B n C ( Just an oversight , was under the thought that u wanted a clarification wrt C n E)

back to the question : Diff bxn B n C

B : is wrong because of the -ed modifier

-ed modifiers tend to modify the closest noun , thus in B = Prevent -ED is wrongly modifying Distances whereas it should modify Accoustic Energy :the accoustic energy is Prevented ........ not the distance.

C : Sound travels a longer distance ..................... ( How is this possible ? )........... because its energy is prevented from dissipating by X = The terminal portion in C after the comma is nothing but a modifier stating how it is possible for Sound to travel longer distances.

Skm,
Its not necessary that the verb-ed modifies the word preceding it.
that's why I told you in my earlier post. The subject is sound.
For your concept, when the subject is performing the action then we use verb-Ing and use active voice BUT when the same subject is used as the object upon which the action is performed, then we use verb-ed and passive voice.
I will really advise you to reply me back at this thread when you have read this post. You did the same earlier, forcing me to repeat my question several times.
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04 Sep 2012, 03:35
siddharthasingh wrote:
skmskm wrote:
siddharthasingh wrote:
Hey sks,
lets break the entire sentence into clauses.
1) Sound can travel through water for enormous distances.
2) Sound is prevented from dissipating its acoustic energy as a result of boundaries in the ocean created by water layers of different temperatures and densities.

In your explanation you have stated that energy prevented itself ......
IMO subject is SOUND.
that's why I have been asking for the differences in the meanings of B and C.

Sorry my bad : plz read my earlier post options as C n E and not B n C ( Just an oversight , was under the thought that u wanted a clarification wrt C n E)

back to the question : Diff bxn B n C

B : is wrong because of the -ed modifier

-ed modifiers tend to modify the closest noun , thus in B = Prevent -ED is wrongly modifying Distances whereas it should modify Accoustic Energy :the accoustic energy is Prevented ........ not the distance.

C : Sound travels a longer distance ..................... ( How is this possible ? )........... because its energy is prevented from dissipating by X = The terminal portion in C after the comma is nothing but a modifier stating how it is possible for Sound to travel longer distances.

Skm,
Its not necessary that the verb-ed modifies the word preceding it.
that's why I told you in my earlier post. The subject is sound.
For your concept, when the subject is performing the action then we use verb-Ing and use active voice BUT when the same subject is used as the object upon which the action is performed, then we use verb-ed and passive voice.
I will really advise you to reply me back at this thread when you have read this post. You did the same earlier, forcing me to repeat my question several times.

1. For your concept, when the subject is performing the action then we use verb-Ing and use active voice BUT when the same subject is used as the object upon which the action is performed, then we use verb-ed and passive voice : Sure buddy, will revisit my concept.

2. I will really advise you to reply me back at this thread when you have read this post. You did the same earlier, forcing me to repeat my question several times : Sorry for that ; Surely will be more careful in the future.
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04 Sep 2012, 06:16
Initially I also fell for E. However, the correct answer is C.

To make the meaning clear, read C as:
Sound can travel through water for enormous distances - its acoustic energy prevented from dissipating by boundaries in the ocean created by water layers of different temperatures and densities.

Here it is clear that "Boundaries in ocean" prevent Sound's acoustic energy from getting dissipated.

In E (incorrect answer), the sentence implies that the "Sound" itself prevents its acoustic energy from dissipating by using boundaries in the ocean.

Hope this helps.
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04 Sep 2012, 07:12
What's wrong with the meaning of B?
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04 Sep 2012, 07:39
IMO, B is (a) wordy and (b) has no real meaning.

B implies that Sound is somehow "being prevented" from dissipating its acoustic energy - by boundaries in ocean.
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04 Sep 2012, 08:52
So what?
I mean how can you deduce that which meaning us correct and which is not.
The two options, b and c, imply ->
1)sound is prevented from having its acoustic energy dissipated by boundaries
2)sound's acoustic energy is prevented from dissipating by boundaries
respectively.
My question straightaway is how can you choose a particular meaning to be correct?
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04 Sep 2012, 09:22
At first I thought it is B, but after I read the explanation from skmskm I realized that I'm wrong.
Tough one.
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Re: Sound can travel through water for enormous distances, [#permalink]

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26 Feb 2013, 19:40
It is clear though the word "having" in (B) makes it wordy.

2)prevented from having its acoustic energy dissipated by
3) its acoustic energy prevented from dissipating by

Rgds,
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26 Feb 2013, 20:44
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Marcab wrote:
So what?
I mean how can you deduce that which meaning us correct and which is not.
The two options, b and c, imply ->
1)sound is prevented from having its acoustic energy dissipated by boundaries
2)sound's acoustic energy is prevented from dissipating by boundaries
respectively.
My question straightaway is how can you choose a particular meaning to be correct?

This question bugged me, too, so here is the result of my search and hopefully the answer to your question about meaning
https://e-gmat.com/blogs/?p=413
Re: Tough one   [#permalink] 26 Feb 2013, 20:44

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