Geography Chapter 13 Answers – Flashcards
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The worldwide average salinity of seawater is
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3.5%
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The grinding and shaping of rock surfaces by the "sandblasting" action of particles carried by wind is
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abrasion.
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When the Sun and Moon are on the same side Earth or on opposite sides of earth, the ________ tide occurs and results in the ________ tidal range between low and high tides.
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spring; greatest
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Material deposited in a long ridge extending out from a coast is called a
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barrier spit.
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Pebbles can be moved by ________ in a process known as ________.
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saltating particles; surface creep
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Undercutting action of the sea results in
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sea cliffs
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Seawater with less than 3.5% is termed
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brackish
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Which of the following occurs when the Sun, Moon, and Earth are in alignment (i.e., in opposition or conjunction)?
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Maximum tidal ranges
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In general usage, it only includes the near shore area of coastal environments
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Which of the following is INCORRECT regarding the littoral zone?
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Areas with heavy freshwater runoff and low evaporation will have ________ average salinity.
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lower than
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An extensive area of sand and sand dunes is known as a(n)
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erg desert, or sand sea.
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Barrier islands can migrate.
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True
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Approximately what percentage of the world's population lives near the ocean?
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40%
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An earthquake, a submarine landslide, or a volcanic eruption is capable of producing a
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tsunami
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When the height of a wave exceeds its vertical stability, the wave is called a
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breaker.
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Approximately what percentage of the United States' population live in coastal areas?
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50%
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When the Sun and Moon are neither in conjunction or opposition, the ________ tide occurs and results in the ________ tidal range between low and high tides.
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neap; lowest
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Water can be considered a "universal" solvent.
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True
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According to the figure above, within the mixing zone and thermocline, the average temperature and salinity
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decrease with depth.
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Seas are generally smaller than an ocean and tend to be partially enclosed by land or large, inland, saline water bodies.
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What is the difference between an ocean and a sea?
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surfaces of concentrated pebbles and gravels.
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Desert pavement refers to
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The height of a tsunami grows as it approaches a coastline primarily because
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its wavelength shortens.
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Which of the following terms is NOT a correct reference to desert pavement?
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Sand seas
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Worldwide salinity varies between ________ and ________.
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3.4%; 3.7%
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A general term for the coastal area and shallow offshore environment is
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littoral zone.
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Dune migration threatens human structures and may adversely affect human health.
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True
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slightly basic.
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On average, ocean water is
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Dunes are the smallest features shaped by the movement of windblown sand.
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False
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They are produced solely by the gravitational pull of the Sun.
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Which of the following is NOT correct regarding tides?
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Elongated, streamlined ridges aligned parallel to the most effective wind direction are called
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yardangs.
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Regular patterns of smooth, rounded waves are called
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swells.
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Relative to dune movement and form, a dune's slipface forms on which side?
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leeward side
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The major erosional processes in deserts are eolian.
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True
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The smallest features shaped by saltating grains of sand are
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ripples.
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High tides are known as ________ whereas low tides are kown as ________.
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flood tides; ebb tides
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The smallest features shaped by saltating grains of sand are
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ripples.
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