Which of the following pr°Cesses °Ccurs when a completely dry air parcel first rises and cools, and then subsequently sinks and warms?
A. an irreversible adiabatic process
B. a reversible adiabatic process
C. an irreversible pseudoadiabatic process
D. a reversible pseudoadiabatic process
Answer: B
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A valley or anabatic breeze is created when
A) air from lower elevations is heated more efficiently and rises, creating an upslope breeze. B) air from higher elevations is heated more efficiently and rises, creating a mountain breeze. C) air from lower elevations is heated less efficiently and rises, creating an upslope breeze. D) air from higher elevations is heated more efficiently and sinks, creating a mountain breeze.
A sand spit forms when ____
A) a long-shore current speeds up when approaching a headland B) a long-shore current slows as it clears a headland and approaches a quiet bay C) a turbidity current flows near a coast D) sediment deposition connects a barrier island to the mainland
Most exotic species are introduced into a new environment accidentally as a result of ________.
Fill in the blank(s) with the appropriate word(s).
Exfoliation occurs because
A) water freezes in joints and expands. B) evaporated water leaves behind previously dissolved mineral to form crystals, which accumulate and grow over time, exerting pressure on the rock. C) water combines with minerals and increases their size, thereby causing surrounding minerals to expand. D) overlying rock is removed, thereby allowing the underlying rock mass to expand and fracture.