Oceans 1

  • Created by: MariaC5
  • Created on: 04-04-18 15:26
Phytoplankton and algae produce what in the ocean?
Oxygen
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Water is what kind of molecule?
Polar
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What type of bonds are there between oxygen and helium?
Covalent bonds
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Which bonds are responsible for the way water acts?
Hydrogen bonds
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What is the study of ground water called?
Hydrogeology
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What % of water on earth is fresh water?
2.5%
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What % of water on earth is ice or permanent snow cover?
1.7%
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Sunlight in the ocean penetrates down to a maximum of...
200m
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What are the correct %s of salt and water in seawater?
96.5% water, 3.5% dissolved salts
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The most abundant salt in the sea is
NaCl
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What is the salinity of sea water?
35ppt
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What is the density of sea water?
1.03g cm3
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What range is the pH of sea water?
7.8-8.4
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What is the thermocline?
Steep change of temperature
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Cold and salty water is
Dense & lower down the water column
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Warm freshwater is
Not dense & higher up in the water column
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Evaporating water increases or decreases salinity?
Increases
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Adding water increases or decreases salinity?
Decreases
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What does halocline mean?
Change in salinity
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What is depth is the photic zone?
Top 100m
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What depth range is the dysphotic zone?
100-400/500m
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At what depth does the aphotic zone begin?
500m
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The Neritic zone and the Oceanic zone divide up what?
The Pelagic zone
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What is the Neritic zone?
Shallow water overlying continental shelf - 200m
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What is the Oceanic zone?
Deep water in open ocean beyond shelf break
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What is the Benthic zone?
Sea floor - any part of the sediment
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Thermohaline circulation is
Sub surface currents
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Surface moves at - of wind speed, extends to approx 100m deep
3-5%
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A big circular currents that goes around parts of our ocean basins is called?
Gyre circulation
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Other cards in this set

Card 2

Front

Water is what kind of molecule?

Back

Polar

Card 3

Front

What type of bonds are there between oxygen and helium?

Back

Preview of the front of card 3

Card 4

Front

Which bonds are responsible for the way water acts?

Back

Preview of the front of card 4

Card 5

Front

What is the study of ground water called?

Back

Preview of the front of card 5
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