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The Gulches is an area of volcanic rock that is gashed by many channel

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Bunuel
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The Gulches is an area of volcanic rock that is gashed by many channel [#permalink] New post   03 Jul 2018, 11:46
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63% (02:31) correct 37% (02:34) wrong based on 569 sessions
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The Gulches is an area of volcanic rock that is gashed by many channels that lead downhill from the site of a prehistoric glacier to a river. The channels clearly were cut by running water. It was once accepted as fact that the cutting occurred gradually, as the glacier melted. But one geologist theorized that the channels were cut in a short time by an enormous flood. The channels do show physical evidence of having been formed quickly, but the flood theory was originally rejected because scientists knew of no natural process that could melt so much ice so quickly. Paradoxically, today the scientific community accepts the flood theory even though scientists still do not know of a process that can melt so much ice so quickly.

Which one of the following is supported by the information in the passage?


(A) Only running water can cause deep channels in volcanic rock.

(B) The river did not exist before the channels were cut.

(C) Geologists cannot determine the amount of heat required to melt a glacier quickly.

(D) The physical effects of water on rock vary with the speed with which those effects are produced.

(E) Geologists are compelled to reject physical evidence when it leads to an unexplainable conclusion.
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gmat1393
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Re: The Gulches is an area of volcanic rock that is gashed by many channel [#permalink] New post   03 Jul 2018, 19:59
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Hi Bunuel

Please change the tag to Inference, this is not an Assumption Type question

Thanks

Bunuel wrote:
The Gulches is an area of volcanic rock that is gashed by many channels that lead downhill from the site of a prehistoric glacier to a river. The channels clearly were cut by running water. It was once accepted as fact that the cutting occurred gradually, as the glacier melted. But one geologist theorized that the channels were cut in a short time by an enormous flood. The channels do show physical evidence of having been formed quickly, but the flood theory was originally rejected because scientists knew of no natural process that could melt so much ice so quickly. Paradoxically, today the scientific community accepts the flood theory even though scientists still do not know of a process that can melt so much ice so quickly.

Which one of the following is supported by the information in the passage?


(A) Only running water can cause deep channels in volcanic rock.

(B) The river did not exist before the channels were cut.

(C) Geologists cannot determine the amount of heat required to melt a glacier quickly.

(D) The physical effects of water on rock vary with the speed with which those effects are produced.

(E) Geologists are compelled to reject physical evidence when it leads to an unexplainable conclusion.
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Re: The Gulches is an area of volcanic rock that is gashed by many channel [#permalink] New post   09 Feb 2020, 06:27
D and E both are close ....can't see how to reject E.

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Re: The Gulches is an area of volcanic rock that is gashed by many channel [#permalink] New post   27 Mar 2020, 15:12
Rameshllll wrote:
D and E both are close ....can't see how to reject E.

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(E) is incorrect because the geologists acknowledge the physical evidence that the channels were formed quickly. What they rejected initially was the flood THEORY to explain the physical evidence.
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Re: The Gulches is an area of volcanic rock that is gashed by many channel [#permalink] New post   03 Apr 2020, 11:34
Can anyone explain why Option A is incorrect
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Re: The Gulches is an area of volcanic rock that is gashed by many channel [#permalink] New post   04 Apr 2020, 19:31
anshulvnd5 wrote:
Can anyone explain why Option A is incorrect



it is quoting a generic view ...
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Re: The Gulches is an area of volcanic rock that is gashed by many channel [#permalink] New post   04 Apr 2020, 22:21
rohit8865 wrote:
anshulvnd5 wrote:
Can anyone explain why Option A is incorrect



it is quoting a generic view ...


I am still not getting it, I mean this generic view is right ?

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Re: The Gulches is an area of volcanic rock that is gashed by many channel [#permalink] New post   20 Apr 2024, 08:44
The Gulches is an area of volcanic rock that is gashed by many channels that lead downhill from the site of a prehistoric glacier to a river. The channels clearly were cut by running water. It was once accepted as fact that the cutting occurred gradually, as the glacier melted. But one geologist theorized that the channels were cut in a short time by an enormous flood. The channels do show physical evidence of having been formed quickly, but the flood theory was originally rejected because scientists knew of no natural process that could melt so much ice so quickly. Paradoxically, today the scientific community accepts the flood theory even though scientists still do not know of a process that can melt so much ice so quickly.

Which one of the following is supported by the information in the passage?

(A) Only running water can cause deep channels in volcanic rock. - WRONG. Bit extreme claim to make. 

(B) The river did not exist before the channels were cut. - WRONG. Again like A a bit extreme claim.

(C) Geologists cannot determine the amount of heat required to melt a glacier quickly. - WRONG. They may know or they may not. 

(D) The physical effects of water on rock vary with the speed with which those effects are produced. - CORRECT. Aligns with the blue text.

(E) Geologists are compelled to reject physical evidence when it leads to an unexplainable conclusion. - WRONG. They din't accept earlier but now they accept that theory.

Answer D.
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Re: The Gulches is an area of volcanic rock that is gashed by many channel [#permalink] New post   20 Apr 2024, 13:52
 
Rameshllll wrote:
D and E both are close ....can't see how to reject E.

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D and E are not close at all,
Considering E, there is no compulsion stated in the para to straight up reject physical evidence when it leads to an unexplainable conclusion, its too extreme of a choice.
D on the other hand, sums up the underlying fact on which the para is based.
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Re: The Gulches is an area of volcanic rock that is gashed by many channel [#permalink] New post   20 Apr 2024, 17:51
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anshulvnd5 wrote:
rohit8865 wrote:
anshulvnd5 wrote:
Can anyone explain why Option A is incorrect


it is quoting a generic view ...

I am still not getting it, I mean this generic view is right ?

Posted from my mobile device

­We need an answer that is fully supported by the given info. All the text tells us is that these particular trenches were clearly cut by running water. That doesn't mean that water is the only thing that can EVER cause deep channels. Even if we knew this to be true in real life, that wouldn't make it supported by the text. (A could say that 10 > 2, and it still wouldn't be supported by the text.)
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The Gulches is an area of volcanic rock that is gashed by many channel [#permalink] New post   21 Apr 2024, 01:09
Rameshllll wrote:
D and E both are close ....can't see how to reject E.

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­E is the opposite of what is stated in the passage. One geologist proposed that channels were cut by a flood, not reject it. The SCIENTIFIC community rejected the theory because they didn't have an explanation for that.

We don't know for sure that Geologists rejected anything with the info presented in the passage. Maybe geologists believed in it but other scientists disagreed with the flood theory so they also had to keep shush and agree with the larger community.­
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The Gulches is an area of volcanic rock that is gashed by many channel [#permalink]
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