Lecture 2 Flashcards
Temperature varies with ___?
-depth, it decreases further down you go
-latitude and regionally
Salinity
a measure of the mass of dissolved inorganic solids per volume of seawater
List the major elements of salinity
sodium, chlorine, magnesium, sulfur, calcium, potassium
List the minor elements of salinity
bromine, carbon, strontium, boron, silicon, fluorine
What causes salinity changes?
the amount of freshwater leaving (evaporation) and entering the ocean (precipitation)
Evaporation, precipitation, and salinity vary with ___?
latitude
Where there is high oxygen, there is __ ?
high photosynthesis
Where there is high oxygen, there are areas of __?
high respiration
Light varies with __?
depth
Where does most light come from?
the sun
what kind of decline with depth?
exponential
Where is the photic zone?
about 200 meters from the surface to depth
What is light needed for?
photosynthesis and vision
Is water stagnant?
No, it moves sideways/horizontally and up/down/vertically
What do ocean currents result from?
differences in solar radiation across the surface of the earth
