U2L4 - Ocean Currents Pretest

Front

What is upwelling?

Back

Upwelling is the process where deep, cold, nutrient-rich water rises to the surface, promoting the growth of marine producers like phytoplankton.

Front

How do surface currents in the Southern Hemisphere flow?

Back

Surface currents in the Southern Hemisphere flow in a counterclockwise direction.

Front

Which gas is found in ocean water at a percentage about 45 times greater than in the atmosphere?

Back

Carbon dioxide is found in ocean water at a percentage about 45 times greater than in the atmosphere.

Front

What is the chain of energy transfers that leads to the formation of surface currents?

Back

The chain of energy transfers is: solar energy → wind energy → surface currents.

Front

How does temperature affect the density of water?

Back

Cold water is more dense than warm water.

Front

What are surface currents?

Back

Surface currents are large-scale movements of water that occur at the ocean's surface, primarily driven by wind.

Front

What is the role of wind in ocean currents?

Back

Wind transfers energy to the ocean surface, creating surface currents.

Front

What is the difference between deep ocean currents and surface currents?

Back

Deep ocean currents are driven by differences in water density, while surface currents are primarily driven by wind.

Front

What is convection current in the ocean?

Back

Convection currents in the ocean are movements of water caused by differences in temperature and density, leading to the circulation of water.

Front

What factors influence ocean water density?

Back

Ocean water density is influenced by temperature, salinity, and pressure.