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Updated on: 21 Aug 2024, 02:24
Originally posted by nycgirl212 on 30 May 2016, 09:24.
Last edited by Bunuel on 21 Aug 2024, 02:24, edited 4 times in total.
Last edited by Bunuel on 21 Aug 2024, 02:24, edited 4 times in total.
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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85% (01:49) correct
15%
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Which of the following most logically completes the argument below?
Within the earth's core, which is iron, pressure increases with depth. Because the temperature at which iron melts increases with pressure, the inner core is solid and the outer core is molten. Physicists can determine the melting temperature of iron at any given pressure and the pressure for any given depth in the earth. Therefore, the actual temperature at the boundary of the earth's outer and inner cores—the melting temperature of iron there—can be determined, since_______.
(A) the depth beneath the earth's surface of the boundary between the outer and inner cores is known
(B) some of the heat from the earth's core flows to the surface of the earth
(C) pressures within the earth's outer core are much greater than pressures above the outer core
(D) nowhere in the earth's core can the temperature be measured directly
(E) the temperatures within the earth's inner core are higher than in the outer core
Within the earth's core, which is iron, pressure increases with depth. Because the temperature at which iron melts increases with pressure, the inner core is solid and the outer core is molten. Physicists can determine the melting temperature of iron at any given pressure and the pressure for any given depth in the earth. Therefore, the actual temperature at the boundary of the earth's outer and inner cores—the melting temperature of iron there—can be determined, since_______.
(A) the depth beneath the earth's surface of the boundary between the outer and inner cores is known
(B) some of the heat from the earth's core flows to the surface of the earth
(C) pressures within the earth's outer core are much greater than pressures above the outer core
(D) nowhere in the earth's core can the temperature be measured directly
(E) the temperatures within the earth's inner core are higher than in the outer core
ID: 500251
30 May 2016, 09:47
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This question is an Assumption type . If we keep P for pressure, T for melting temperature and D for depth from the surface, we have
Higher D --> Higher P,(1st line)
Higher P --> Higher T,( 1st line)
and they can determine P and T for any depth (D).
Think like this. If they knew exact temperature, they should know the pressure --> they should have knowledge on the depth. So there's your answer.
Give kudos if you find the explanation useful.
Higher D --> Higher P,(1st line)
Higher P --> Higher T,( 1st line)
and they can determine P and T for any depth (D).
Think like this. If they knew exact temperature, they should know the pressure --> they should have knowledge on the depth. So there's your answer.
Give kudos if you find the explanation useful.
30 May 2016, 10:01
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Argument:- Within the earth's core, which is iron, pressure increases with depth. Because the temperature at which iron melts increases with pressure, the inner core is solid and the outer core is molten. Physicists can determine the melting temperature of iron at any given pressure and the pressure for any given depth in the earth. Therefore, the actual temperature at the boundary of the earth's outer and inner cores--the melting temperature of iron there--can be determined, since_______.
The correct answer choice is "A" and my explanation as follows:
Option A states "a) the depth beneath the earth's surface of the boundary between the outer and inner cores is known"
The highlighted portion above in the argument states that for a "given" pressure / depth it is possible to determine temperature therefore the assumption that would logically complete this argument is that either or both of these parameters are "given" or in other words "known".
Kudos if you think this explanation most logically completes the choice of answer
The correct answer choice is "A" and my explanation as follows:
Option A states "a) the depth beneath the earth's surface of the boundary between the outer and inner cores is known"
The highlighted portion above in the argument states that for a "given" pressure / depth it is possible to determine temperature therefore the assumption that would logically complete this argument is that either or both of these parameters are "given" or in other words "known".
Kudos if you think this explanation most logically completes the choice of answer
