Little is known about the elusive section of the earths atmosphere kn

Question

Little is known about the elusive section of the earth’s atmosphere known as the mesosphere. Located between the stratosphere (the maximum altitude that airplanes can achieve) and the thermosphere (the minimum altitude of spacecraft), the mesosphere is poorly understood and little explored. The most signiɹcant feature of the mesosphere is the various tides and waves that propagate up from the troposphere and stratosphere. The dissipation of these waves is largely responsible for propelling the mesosphere around the globe. These wave patterns are further aʃected when gas particles in the mesosphere collide with meteoroids, producing spectacular explosions, which usually generate enough heat to consume the meteor before it can fall to earth. The conɻagration leaves behind traces of iron and other metals and fuels the atmospheric tides radiating outward from the mesosphere.    1  
 1. The author primarily describes the mesosphere as

A. turbulent
B. opaque
C. unfamiliar
D. radiant
E. anarchic 
 
 2  
 Consider each of the choices separately and select all that apply.

2. The passage suggests that the mesosphere is inɻuenced by

A. collisions with extraterrestrial debris
B. vibrations from the troposphere
C. oceanic tides

Sajjad1994 · Answer

OE

1. The author primarily describes the mesosphere as

The passage describes the mesosphere as elusive, poorly understood and little explored. The answer closest to this is  choice (C) , unfamiliar. Although the passage states that waves travel through it, it never says it is turbulent: The waves could be small or large.  Choices (A), (B), (D),  and  (E)  are never mentioned in the passage.

Answer: C

Sajjad1994 · Answer

OE

2. The passage suggests that the mesosphere is inɻuenced by

This question asks about things which could aʃect the mesosphere. According the passage, the mesosphere is affected by tides and waves that propagate up from the troposphere and stratosphere, so  choice (B)  is correct. The mesosphere is also further aʃected when gas particles in the mesosphere collide with meteoroids, so  choice (A)  is also correct. Although the passage mentions tides, it does not specify that they are oceanic tides, so  choice (C)  is incorrect, and the answers are  choices (A) and (B).

Answer: A,B

Little is known about the elusive section of the earths atmosphere kn

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