Question 1

What creates surface currents in the ocean?

Accepted Answer

winds blowing across the ocean’s surface

Answer

Earth rotating on its axis

Answer

increased density due to salinity and temperature

Answer

the gravitational pull of the moon

Question 2

Where would you expect to find the highest  levels of salinity at the ocean’s surface?

Accepted Answer

closest to the equator

Answer

under a melting glacier

Answer

at the mouth of a river

Answer

in areas with large amounts of precipitation

Question 3

Which statement is true about the pressure, density, and temperature of ocean water as depth        increases?

Accepted Answer

Temperature decreases, density and pressure increase.

Answer

All of these properties of ocean water increase

Answer

Temperature increases, density and pressure decrease

Answer

All of these properties of ocean water decrease

Question 4

Which ocean is twice as large as the Atlantic?

Accepted Answer

Pacific

Answer

Indian

Answer

Arctic

Answer

Southern

Question 5

What happens to the density of ocean water as salinity increases?

Accepted Answer

The density of ocean water increases.

Answer

The density of ocean water decreases then increases.

Answer

The density of ocean water decreases

Answer

The density of ocean water does not change

Question 6

What is the most abundant salt in the ocean?

Accepted Answer

sodium chloride

Answer

calcium sulfate

Answer

potassium chloride

Answer

magnesium sulfate

Question 7

What is the average salinity of water found in the Pacific Ocean?

Accepted Answer

35 parts per thousand

Answer

97 parts per thousand

Answer

3 parts per thousand

Answer

340 parts per thousand

Question 8

What causes the salinity of ocean water to decrease?

Accepted Answer

a high rate of precipitation

Answer

a high rate of freezing

Answer

a high rate of evaporation

Answer

a high rate of condensation

Question 9

How does the Gulf Stream affect the climate of coastal regions along the eastern United States? (HINT: This surface current forms at the equator.)

Accepted Answer

Because it is a warm surface current, it creates a  warmer climate along the coast.

Answer

Because it is a cold surface current, it creates a cooler climate along the coast.

Answer

Because it is a deep current, it is too dense to come to the surface and affect the coast’s climate.

Answer

Because of the Coriolis effect, it curves before it can affect the coast’s climate.

Question 10

The Earth’s rotation causes surfaces currents to curve. What is this called?

Accepted Answer

the Coriolis effect

Answer

the Transitional effect

Answer

the Curving effect

Answer

the Halocline effect

Question 11

What ocean lies off the west coast of California?

Accepted Answer

the Pacific Ocean

Answer

the Indian Ocean

Answer

the Atlantic Ocean

Answer

the Arctic Ocean

Question 12

What is the density of ocean water affected by?

Accepted Answer

temperature and salinity

Answer

rotation

Answer

salinity

Answer

temperature

Question 13

What is the difference in the formation of surface currents and deep currents?

Accepted Answer

Surface currents are created by wind and deep currents are formed by changes in ocean water density.

Answer

Surface currents are created by the Coriolis effect and deep currents are formed by subducting plates.

Answer

There is no difference; they are both created by   changes in ocean water density.

Answer

There is no difference; they are both formed by wind.

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