PrepTest 106, Section 4, Question 12
Long after the lava has cooled, the effects(450 more words not shown)
The information in the passage(11 more words not shown)
- AMajor volcanic eruptions(7 more words not shown)
- BThe effect of(12 more words not shown)
- CMajor volcanic eruptions(7 more words not shown)
- DMinor volcanic eruptions(13 more words not shown)
- EMinor volcanic eruptions(15 more words not shown)
Reading the passage
We're looking for the least-supported claim. The main distinction from the study is useful here: minor eruptions have no discernible temperature effect, while major eruptions have a smaller effect than expected. The last paragraph adds that a small drop could grow into significant regional cooling.
Working the answers
- A
Supported. Major eruptions produce a measurable drop in the eruption's hemisphere and a smaller drop in the opposite hemisphere. Small cooling is still cooling.
- B
Supported. The study finds a “smaller drop than expected.” That is the central revision to earlier estimates.
- CCorrect
We have reason to reject this claim, not support it. The final paragraph explains how a small initial drop could cause a significant regional fluctuation through feedback. The account leaves room for substantial regional effects rather than ruling them out.
- D
The finding that minor eruptions have “no discernible effect on temperature” supports this description of the eruption's hemisphere. It reports what the study detected, not proof that every possible local change is exactly zero.
- E
The same stated finding supports the opposite hemisphere too. Nothing limits the finding about minor eruptions to their own hemisphere.
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