currents

Question 1

what are surface currents and what are they caused by

Answer 1

• first 400m of the ocean
• caused by wind

Question 2

what are subsurface current and what are they causes by

Answer 2

• greater than 800m in depth
• caused by density variations

Question 3

what are density variations caused by

Answer 3

• temperature
• salinity

Question 4

what is thermohaline circulation

Answer 4

all currents working together to create huge world wide circulation (regulates earth temperature)

Question 5

what is the cryosohere

Answer 5

all frozen water

Question 6

what’s pack ice

Answer 6

ice floating on the oceans near the north or south poles

Question 7

what are glaciers

Answer 7

mass of ice on land formed by accumulated snow