Marine Science unit 3 Review

What is salinity?

• The measure of salt content in a body of water.

• The measure of temperature in a body of water.

• The measure of pressure in a body of water.

• The measure of oxygen content in a body of water.

How does freshwater input affect the salinity of ocean water?

• It increases the salinity.

• It decreases the salinity.

• It has no effect on salinity.

• It doubles the salinity.

How does evaporation affect the salinity of ocean water?

• It decreases the salinity.

• It increases the salinity.

• It has no effect on salinity.

• It neutralizes the salinity.

Tags

NGSS.MS-ESS2-4

How does salinity affect the density of water?

• Salinity decreases density.

• Salinity has no effect on density.

• Salinity increases density.

• Salinity neutralizes density.

What is the thermocline?

• A pressure gradient in the ocean.

• A temperature gradient and the middle layer of an ocean's water column.

• A salinity gradient in the ocean.

• A density gradient in the ocean.

Tags

NGSS.MS-ESS2-6

How does temperature change as depth increases?

• Temperature increases.

• Temperature remains constant.

• Temperature decreases.

• Temperature fluctuates randomly.

What are currents?

• The movement of water in one direction.

• The movement of air in one direction.

• The movement of sand in one direction.

• The movement of fish in one direction.

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-6

Which of the following are reasons why ocean currents are important?

• They help in cycling food and providing transport.

• They increase the temperature of the ocean.

• They reduce the salinity of the ocean.

• They create new landforms.

Tags

NGSS.MS-ESS2-6

What drives surface currents?

• Wind

• Sunlight

• Earth's rotation

• Moon's gravity

Tags

NGSS.MS-ESS2-6

What is upwelling?

• The movement of water from a deep region to a surface area.

• The movement of water from a surface area to a deep region.

• The movement of air from a deep region to a surface area.

• The movement of sand from a deep region to a surface area.

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-6