Chapter 19 – Deserts & Winds – Flashcards
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Desert regions occur __________, and always have a(n) __________ climate zone adjacent to them.
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on every continent; steppe
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At what latitudes do the large-scale, convection cells bring dry air downward toward the Earth's surface?
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between 20-30° north and south
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Deserts that lie outside of the subtropics and mid-latitude belts are most likely the result of __________.
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the presence of a rainshadow
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Precipitation occurs on the __________ of the mountain range, while the __________ is dry.
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windward side; leeward side
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When air __________, it is compressed and warmed.
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sinks
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Which of the following accurately describes the Basin and Range region of the western United States?
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a region with alternating mountains and basins that have been produced by normal faulting
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A(n) __________ is a cone-shaped deposit of sediment that is deposited when a stream exits the mouth of a canyon.
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alluvial fan
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What type of rocks would you expect to find in a playa lake depositional environment?
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evaporites and claystone
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An isolated, heavily eroded hill or mountain that rises abruptly from a plain is a(n) __________.
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inselberg
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Other than the landforms you learned about in the video, what is another landform present in the Basin and Range Province?
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sand dunes
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Which of the following is true about sand dunes?
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Dunes move over time.
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What is the term for the rolling and bouncing of sand grains during transport?
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saltation
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The __________ of a dune is characterized by a decrease in energy and sand avalanches, which occur due to oversteepening.
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leeward side
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What is cross bedding?
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Layers deposited on a dune slip face that are inclined in the direction of wind transport.
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Cross-bedded sandstone shows inclined beds in a downward direction. What part of the ancient dune do these features represent?
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slip face
