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Chapter 13--Section 3: Ocean Water Chemistry

Terms in this set (19)

The measure of the amount of dissolved salts in a given amount of water is ___________.
salinity
An underwater vehicle built of strong materials to resist pressure is a(n) ______________.
submersible
In areas where there is high evaporation or freezing of ocean water, the salinity of the ocean is __________.
higher
The salinity of the ocean causes it to freeze at a ___________ temperature than fresh water.
lower
Because salinity increases the density of ocean water, it also increases the ___________of ocean water.
buoyancy
Salinity throughout the ocean varies. What would cause the ocean's salinity to be LOWERED in an area?
1. melting ice at glaciers
2. fresh water from rivers flowing into it
3. large amounts of rain
What are two gases found in ocean water that are necessary for living things ?
oxygen and carbon dioxide
Why does warm water stay on the surface of the ocean?
Warm water is less dense than cold water.
Exploring the depths of the ocean is difficult because of the combined ____________of the water and atmosphere.
pressure
The vertical section of ocean from the surface to the ocean floor is called the _____________.
water column
Temperature and light _____________ as depth increases.
decrease
The most abundant salt in sea water is _________.
sodium chloride
The densest ocean water in the water column is generally found in the __________ zone.
deep
The _______ zone is affected by the weather.
surface
The only manned submersible to descend 11 kilometers in the ocean is the ________.
Trieste
Two factors that influence density of ocean water are __________ and salinity.
temperature
There is more_________ in the ocean than in the air we breathe.
carbon dioxide
______________ is more abundant in the surface zone because algae lives there and the atmosphere is directly above it.
oxygen
The only submersible ROV/AUV to withstand the enormous pressures of the deepest part of the ocean is the ______________.
Nereus
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