Properties of H2O, Ocean Composition, Ocean Currents
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each of the black spaces below before clicking
on it to display the answer.
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| Water exists in nature in how many forms? What are these forms? | 3; Solid, liquid, gas
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| At what temperature is water the most dense? | 4 degrees Fahrenheit
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| Name the 2 types of attraction. | Cohesion and adhesion
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| What property of water causes an attracting force? (Not Cohesion or Adhesion) | Polarity
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| How many oxygen atoms are there in each normal water molecule? How many hydrogen atoms are in each normal molecule? | 1 Oxygen; 2 Hydrogen
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| What property of water causes it to be the "universal solvent"? | Polarity
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| Does the oxygen molecule in water have a negative or positive charge? | Negative
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| Which is denser, water or ice? | Water
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| How much salt is in average ocean water? | 35 ppt
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| Freshwater has ___ ppt salinity. | >0.5
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| Brackish water has >___ to <___ ppt salinity. | 0.5; 35
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| What 2 oceans are party covered with sea ice? | Arctic and Southern
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| What are the 2 sources of water for Earth's oceans? | Condensation and Meteors (comets and asteroids)
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| What is salinity? | Salinity is a measure of the amount of dissolved solids in a mass of water.
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| What are the 4 ways scientists classify ocean zones? | 1) Amount of sunlight
2) Temperature
3) Salinity
4) Density
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| What are the 3 regions of a continental margin? | 1) Continental Shelf
2) Continental Slope
3) Continental Rise
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| Upwelling causes water to move in this direction. | Up
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| What is one benefit of upwelling? | Cold, nutrient-rich water is brought up to the surface where algae, fish and other living things are supported by it.
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| Why do currents curve left (counter-clockwise) in the southern hemisphere? | Coriolis effect
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| What is an ocean current? | An ocean current is a large volume of water flowing in a certain direction.
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| What is a gyre? | A gyre is a circular system of currents.
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| What are 5 major gyres? | 1) North Pacific gyre
2) South Pacific gyre
3) North Atlantic gyre
4) South Atlantic gyre
5) Indian Ocean gyre
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| What causes density currents? | Density differences; water that is colder or more salty is more dense
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| Surface currents are caused by _______? | Wind
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Created by:
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