chapter 19 study notes: the ocean basins
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Chapter 19 Study Notes: The Ocean Basins. 1. A ________ ______ is part of the continental margin. continental shelf . 2. A large body of saline water that may be __________ by land is a _____. surrounded sea. 3. A _______ is made up of minerals. nodule. . 4. - PowerPoint PPT PresentationTRANSCRIPT
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Chapter 19 Study Notes: The Ocean
Basins
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1• A ________ ______ is part of the
continental margin. – continental – shelf
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2• A large body of saline water that
may be __________ by land is a _____. – surrounded – sea.
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3• A _______ is made up of minerals.
– nodule.
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4• A piece of sediment collected by
drilling is a ____ ______. – core – sample.
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5• Continental _________ are made up
of the continental rise, continental slope, and continental shelf. – margins
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6• __________ plate boundaries cause
deep ocean _______. – Convergent – trenches.
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7• _________ _____, ______, and
____________ are tools used by scientists to study the deep ocean.– Drilling ships,– sonar,– bathyscaphs
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8• Earth’s oceans cover about ______
th’s of Earth’s _______. – ¾ th’s – surface.
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9• _________ from turbidity currents
creates ________ canyons and the continental rise.– Erosion – submarine
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10• Most _____-______ ridges form
_______ sea level.– mid-– ocean – below
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11• Ocean sediments are _______ on
the _______ plains.– thinnest – abyssal
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12• Of all the water on Earth, ____ is
found in the _______. – 97% – oceans.
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13• Scientists use ______ to calculate
the ______ of the ocean floor. – sonar – depth
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14• ________ are most likely to form in
_____ _______.– Seamounts – hot – spots.
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15• _________ from rivers spread over
the deep-ocean basins by means of ________ _________. – Sediments – turbidity – currents.
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16• ________________ stands for “SOund
______________________ And Ranging”.– SONAR – Navigation
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17• _______ uses sound waves to
measure the sea floor.– Sonar
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18• The continental ____ has a ______
slope and usually has less than 100 meters of water above it.– shelf – gentle
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19• The _____ and largest ocean on
Earth is the _______. – deepest – Pacific.
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20• The _______ place in Earth’s crust
is a _________.– deepest – trench.
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21• The first step in a ______
transmission is to send out a series of _______ waves. – sonar – sound.
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22• The _______ regions on Earth are
__________ plains. – flattest – abyssal
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23• The _________ ________ is best
known for its depth.– Mariana – Trench
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24• The _____-_______ ridges in Iceland
are unusual because they rise _____ sea level. – mid-– ocean – above
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25• To see the bottom of the ocean
for him or herself while remaining connected to a research ship, a scientist would use a _____________________. – bathysphere.
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• In addition to these notes study the diagram on the top of pages 476-477 so that you can identify the different features found on the seafloor including the following:
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continental shelf, continental slope, continental rise, trench, mid-ocean ridge, abyssal plain