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# In astronomy the term red shift denotes the extent to which

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In astronomy the term red shift denotes the extent to which [#permalink]

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26 May 2007, 17:31
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370. In astronomy the term “red shift” denotes the extent to which light from a distant galaxy has been shifted toward the red, or long-wave, end of the light spectrum by the rapid motion of the galaxy away from the Earth.

(A) to which light from a distant galaxy has been shifted
(B) to which light from a distant galaxy has shifted
(C) that light from a distant galaxy has been shifted
(D) of light from a distant galaxy shifting
(E) of the shift of light from a distant galaxy

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Director
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26 May 2007, 19:07
I think its A.

The use of the passive form 'has been shifted' is correct in this sentence because of the 'by' construction in the non-underlined part of the sentence.

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26 May 2007, 19:15
vineetgupta wrote:
I think its A.

The use of the passive form 'has been shifted' is correct in this sentence because of the 'by' construction in the non-underlined part of the sentence.

Okay, you seem to be correct. If that is the case then..I change my opinion to A. but I lost it then in the real G!

By the waya, could the author please post the OA?

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27 May 2007, 02:25
vineetgupta wrote:
I think its A.

The use of the passive form 'has been shifted' is correct in this sentence because of the 'by' construction in the non-underlined part of the sentence.

Could you please explain what's wrong with E?
Can't we say "the extent of the shift of light ..by ...."?
I don't like present perfect tense in A. I think we don't need it here.

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27 May 2007, 07:48
I think the answer is A, though I had initially picked B.

E is not correct because if you replace the underlined part by E, you will see that distant galaxy will incorrectly be modified by toward the end

What is the OA?

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27 May 2007, 07:52
This question triggered 2 more questions:

Can someone explain the use of extent to and extent of?
Also is there any difference between toward and towards?

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Director
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27 May 2007, 10:07
Caas wrote:
vineetgupta wrote:
I think its A.

The use of the passive form 'has been shifted' is correct in this sentence because of the 'by' construction in the non-underlined part of the sentence.

Could you please explain what's wrong with E?
Can't we say "the extent of the shift of light ..by ...."?
I don't like present perfect tense in A. I think we don't need it here.

Look at the end of the sentences:
The extent to which light from...shifted toward the red
and
The extent of the shift...toward the red

As you can see there is a change in meaning in E...so A is correct.

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Senior Manager
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27 May 2007, 10:19
vineetgupta wrote:
Caas wrote:
vineetgupta wrote:
I think its A.

The use of the passive form 'has been shifted' is correct in this sentence because of the 'by' construction in the non-underlined part of the sentence.

Could you please explain what's wrong with E?
Can't we say "the extent of the shift of light ..by ...."?
I don't like present perfect tense in A. I think we don't need it here.

Look at the end of the sentences:
The extent to which light from...shifted toward the red
and
The extent of the shift...toward the red

As you can see there is a change in meaning in E...so A is correct.

Now I see
Thanks vineetgupta!

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27 May 2007, 10:39
we need passive here. The shifting is not done by the light, but by the rapid motion of the galaxy.

I will go with A.

B is incorrect because it suggests that light did the shifting itself.

B is correct if the sentence had been this way:

In astronomy the term "red shift" denotes the extent to which light from a distant galaxy has shifted toward the red, or long-wave, end of the light spectrum due to the rapid motion of the galaxy away from the Earth.

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Location: Orange County, CA

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09 Aug 2007, 01:07
Quote:
370. In astronomy the term “red shift” denotes the extent to which light from a distant galaxy has been shifted toward the red, or long-wave, end of the light spectrum by the rapid motion of the galaxy away from the Earth.

(A) to which light from a distant galaxy has been shifted
(B) to which light from a distant galaxy has shifted
(C) that light from a distant galaxy has been shifted
(D) of light from a distant galaxy shifting
(E) of the shift of light from a distant galaxy

I was stuck between A and C and picked C. "to which" just sounded wrong...but apparrently that isn't the case. Why should C be discounted?

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Re: SC - 370 - Red Shift [#permalink]

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12 Aug 2007, 01:26
leeye84 wrote:
370. In astronomy the term “red shift” denotes the extent to which light from a distant galaxy has been shifted toward the red, or long-wave, end of the light spectrum by the rapid motion of the galaxy away from the Earth.

(A) to which light from a distant galaxy has been shifted
(B) to which light from a distant galaxy has shifted
(C) that light from a distant galaxy has been shifted
(D) of light from a distant galaxy shifting
(E) of the shift of light from a distant galaxy

i picked A since the past present tense should follow the present tense "denotes". Question: is 'extent to' an idiom?

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Re: SC - 370 - Red Shift   [#permalink] 12 Aug 2007, 01:26
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# In astronomy the term red shift denotes the extent to which

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