PT149.S1.Q17 > Question

SECTION 1 · lr

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7 Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20 Question 21 Question 22 Question 23 Question 24 Question 25

SECTION 2 · rc

PASSAGE 1

Question 1 Question 2 Question 3 Question 4 Question 5

PASSAGE 2

Question 6 Question 7 Question 8 Question 9 Question 10 Question 11 Question 12

PASSAGE 3

Question 13 Question 14 Question 15 Question 16 Question 17 Question 18 Question 19 Question 20

PASSAGE 4

Question 21 Question 22 Question 23 Question 24 Question 25 Question 26 Question 27

SECTION 3 · lr

SECTION 4 · lr

In areas without weather radar, lightning discharge is our only reliable way of finding ash cloud altitude, because we can deduce altitude from the clouds that emit lightning discharge.

There are a few assumptions. Among them:

1) The author is assuming that lightning discharge is the only alternative to weather radar.

2) The author is assuming that lightning discharge is an option in the areas without weather radar.

The negation of (A) is that not all ash clouds will exceed 5 km. Phrased differently, some ash clouds won’t exceed 5 km. This does not ruin the argument that, in some cases where we do not have weather radar, lighting discharge may be our only option for determining altitude.

This is necessary. If (B) is negated, and lightning discharge is not an option for any of the places where we don’t have weather radar, then this argument is ruined.

We are not comparing ash clouds to regular clouds, Also, we are not concerned with accuracy.

The author is not trying to discredit the usability of weather radar. She is looking at areas where weather radar isn’t an option, and saying that lightning discharge is our only option in those cases.

We are not comparing small and large ash clouds. If (E) is negated, and large ash clouds have lightning discharge equally or more frequently than small ash clouds, the argument is unharmed.

PrepTest 149 - Section 1 - Question 17

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