2c - marine pollution

Question 1

How many oceans does earth have

Answer 1

5 - pacific, Atlantic, Indian, arctic, southern

Question 2

Describe the seafloor typography.

Answer 2

continental shelf ~75km width
shelf-slope break
continental slope
continental rise
oceanic ridge
oceanic crust - - > subduction - - > trench - - > continental crust
volcanic island arc (rift, ridge, magma)

Question 3

what is subduction?

Answer 3

1 tectonic plate forced beneath another, generating high pressure and heat to form magma

Question 4

how much salt by mass does ocean water contain?

Answer 4

3.5%
salinity: 33000-37000 ppm

Question 5

what’s the albedo effect?

Answer 5

reflecticity of heat energy back to space

Question 6

do oceans have high or low albedo effect?

Answer 6

Low. Oceans absorb more solar radiation to keep the earth warm.

Question 7

what is ceanic circulation and how is it regulated.

Answer 7

the transport of heat around the globe, affected by factors such as wind, temperature, and salinity

Question 8

what is the coriolis effect?

Answer 8

cause surface water to move away from the coast

Question 9

what is upwelling?

Answer 9

upwelling of cold, nutrient-rich water replaces surface water that has moved away from the coast