An air parcel is considered unstable when it
A) either remains as it is, or changes its initial position.
B) continues to rise until it reaches an altitude at which the surrounding air has a similar temperature.
C) it resists displacement upward.
D) it ceases to ascend.

Question

Quizplus · Accepted Answer

An air parcel is considered unstable when it continues to rise until it reaches an altitude at which the surrounding air has a similar temperature. This happens when the temperature of the air parcel is higher than the surrounding air, causing it to keep rising until it reaches a level where the temperatures equalize. Therefore, option B is the correct choice. Options A, C, and D are incorrect as they do not accurately describe the characteristics of an unstable air parcel.

An Air Parcel Is Considered Unstable When It