Ocean basins

Question 1

What are ocean basins shaped by?

Answer 1

Convergent and divergent plate boundaries

Question 2

What is the continental shelf?

Answer 2

It is the connection between land and the ocean

Question 3

What are abyssal plains?

Answer 3

Extensive flat areas

Question 4

What percentage of the world’s population lives within 100km of the coast?

Answer 4

44%

Question 5

What depth of water can store the heat of the universe?

Answer 5

Upper 3.2 m

Question 6

What is thermocline?

Answer 6

Area which is extremely cold

Question 7

What is the density of seawater determined by?

Answer 7

Salt concentration, Temperature, Pressure

Question 8

What drives thermohaline circulation?

Answer 8

Salt and heat

Question 9

In what direction do ocean currents flow in the Southern hemisphere?

Answer 9

Anticlockwise

Question 10

What is distinctive about the Antartic circumpolar current?

Answer 10

Longest current - 24,000
Driven by westerly winds
Connects all oceans
Warm ocean heats up Europe by 3 degrees

Question 11

What is happening to the global current as a result of climate change?

Answer 11

It is becoming more turbulent

Question 12

What temperature of water holds more CO2?

Answer 12

Colder water

Question 13

What temperature of water has more volume?

Answer 13

Warm water

Question 14

What type of current does NZ sit on?

Answer 14

Subtropical / circumpolar

Question 15

Name the three currents that move around NZ

Answer 15

DWBC. ACC. Subtropical inflow

Question 16

Where do rivers deliver sediment to?

Answer 16

Continental Shelf

Question 17

What is NZ’s largest river in terms of deposition?

Answer 17

Waiapu

Question 18

What is an amphibole?

Answer 18

Details tides that circulate NZ once every 12 hours and 24 minutes.