Suppose you observe lenticular clouds that appear to be motionless. Is the air in the vicinity of the cloud motionless? Explain.?
What will be an ideal response?
ANSWER: ?Stable air flowing over a mountain often moves in a series of waves that may extend for several hundred kilometers on the leeward side. These waves resemble the waves that form in a river downstream from a large boulder. As moist air rises on the upwind side of the wave, it cools and condenses, producing a cloud. On the downwind side of the wave, the air sinks and warms; the cloud evaporates. These clouds are called lenticular clouds, and because they appear motionless viewed from the ground, they are often referred to as standing wave clouds even though the air in their vicinity is not motionless.
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