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Chapter 21: Movement of the Oceans
Study Notes
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1 A current that forms _______ is called a ________ current. sandbars
longshore
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2 A _____ ______ occurs where a _____ enters the ocean. tidal bore
river
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3 A ______ _____ is a type of ____ ______. turbidity current deep
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4 ______ have the effect of moving ______ on the ocean floor Breakers
sediments
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5 Calling a _____ a tidal wave is misleading because a tsunami is not caused by tides tsunami
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6 _____ currents are caused by differences in _________ of ocean water. Deep density
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7 ______ evaporation and ___ ______ in summer cause the Mediterranean Sea to have higher ______ and higher density High low rainfall salinity
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8 _______ ____ grow larger because they get more _____ form the wind
waves energy
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9 Most ocean locations have ___ ___ tides and ___ ____ tides daily because there are two tidal bulges two high low
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10 Motions in ocean water that occur as ____ _______ move around the ocean basins are called tidal _______. tidal bulges oscillations
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11 ____ tides occur when the gravity of the sun and moon work ______ each other to create a _____ daily tidal range Neap against small
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12 One characteristic of the Antarctic ______ Water is high __________. Bottom density
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13 Salinity does _____ control the movement of _______ currents. NOT
surface
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14 _________ are formed by __________ currents Sandbars longshore
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15 The ______ _______ causes gyres to form Coriolis Effect
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16 The curving of the path of ocean currents and wind belts is called the ______ _____ Coriolis Effect
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17 The _______ in levels of ocean water at high tide and low tide is called ___ _____. difference tidal range
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18 The factors that determine the size of a wave are wind ______, ____, and the length of _____ the wind blows. speed fetch time
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19 The force that causes ____ is _______ tides gravity
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20 The _______ point of a wave is its ____ highest crest
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21 The major cause of _____ is the gravitational pull of the _____ on the Earth and its waters. tides moon
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22 The swift, _____ current that flows northward along the east coast of the United States is called the ____ ______ warm Gulf Stream
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23 The _____ ______ that flows toward the ocean is called _____ ____.
tidal current ebb tide
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24 Tides that occur during the ___ ____ and the full moon, when the daily tidal ____ is greatest, are called ____ tides. new moon range spring
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25 Two consecutive wave crests pass a given point in one ______ ________. wave period.
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26 Very ____ ____ are usually the result of a _____ _____. large waves
long fetch
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27 Water ____ move in one complete ______ in a wave during a single wave period particles circle
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28 Waves strike the coastline head-on instead of at an angle as a result of ________. refraction
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29 When the tidal current flows _____ the coast, it is called a ____ _____. toward flood tide
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