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)resists displacement upward.
D)ceases to ascend.
E)ceases to descend.

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. In other words, it keeps rising without any resistance because it is warmer than the surrounding air and will continue to rise until it reaches an altitude at which it becomes cooler than the surrounding air. This is called the level of free convection, and once the parcel reaches this point, it will stop rising and may even begin to sink if it is still warmer than the surrounding air at that altitude.

An Air Parcel Is Considered Unstable When It