Explain the conditions that prevent Asian monsoons in winter and allow them in summer
What will be an ideal response?
Answer: During January the winds generally flow southwestward toward the Indian Ocean from the southern Himalayas. The descending air is compressed and warmed, leading to dry conditions over most of India and Southeast Asia. The situation changes abruptly during late spring or early summer, when heating of the continent contributes to a reversal in the wind direction at both low and high levels. Aloft is an easterly jet stream, with often divergent motion promoting uplift. At low levels, onshore flow occurs, bringing warm, moist, and unstable air from the Indian Ocean to the southern part of the continent, where it rises orographically and by convection as it passes over the hot surface. Cloud formation is further enhanced by a much stronger orographic effect as the air ascends the southern slopes of the Himalayas. A steady flow of warm water is supplied by the clockwise ocean gyre that establishes itself in the summer months.
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Answer the following statement true (T) or false (F)
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What is the main geologic feature for which Siccar Point in Scotland is famous?
A. a boundary between steep gray layers below and gently dipping red layer above B. an ancient erosion surface C. an unconformity D. All of these choices are correct. E. None of these choices are correct.