PT117.S3.Q24 > Question

SECTION 1 · rc

PASSAGE 1

Question 1 Question 2 Question 3 Question 4 Question 5 Question 6 Question 7

PASSAGE 2

Question 8 Question 9 Question 10 Question 11 Question 12 Question 13 Question 14

PASSAGE 3

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 2 · 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 3 · lr

SECTION 4 · lr

Brown dwarfs are more massive than planets but less massive than stars. They are identified by their mass and whether or not lithium is present in their atmospheres. A brown dwarf’s lithium cannot be consumed because they do not have a functional nuclear furnace.

If a celestial object does not have lithium in its atmosphere, then it is not a brown dwarf.

This answer is unsupported. We don’t know from the stimulus that any celestial object without lithium must be a star. We only know from the stimulus that some stars do have lithium in their atmospheres.

This answer is unsupported. We know that this is true of stars at least as massive as the sun, but saying this is true of any celestial object is too strong.

This answer is strongly supported. We know that brown dwarf’s must have lithium in their atmospheres because it cannot be consumed by a nuclear furnace.

This answer is unsupported. This is the reverse relationship from the stimulus. The stimulus tells us that if a star is at least as massive as the sun, then there is lithium in that star’s atmosphere.

This answer is unsupported. We don’t know anything about celestial objects with less mass than brown dwarfs from the stimulus. The stimulus is limited to brown dwarfs and celestial objects with greater mass.

PrepTest 117 - Section 3 - Question 24

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