Which of the following best describe conditions in the mesosphere?
A)High altitude noctilucent clouds form in the mesosphere.
B)Temperatures rapidly increase with altitude in the mesosphere.
C)The mesosphere is completely within the heterosphere.
D)The mesosphere is located between the troposphere and the stratosphere.

Question

Quizplus · Accepted Answer

Noctilucent clouds are a relatively rare phenomena that occur at high altitudes in the mesosphere.

Answer: C 
 The heterosphere is the upper layer of the atmosphere where gases are stratified by molecular weight, and the mesosphere is completely within this layer.

Both B and D are incorrect. Temperatures actually decrease with altitude in the mesosphere, and the mesosphere is located between the stratosphere and the thermosphere, not the troposphere and stratosphere.

Which of the Following Best Describe Conditions in the Mesosphere