Dynamic Ocean Lesson 12

What causes ocean currents?

• Tides and gravitational forces

• Underwater volcanoes

• Marine life and coral reefs

• Wind, temperature differences, and the rotation of the Earth.

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

• Surface currents are driven by density differences and occur below 400 meters, while deep ocean currents are driven by wind and occur in the top 400 meters of the ocean.

• Surface currents and deep ocean currents are the same thing.

• Surface currents are caused by tides, while deep ocean currents are caused by waves.

• Surface currents are driven by wind and occur in the top 400 meters of the ocean, while deep ocean currents are driven by density differences and occur below 400 meters.

How do ocean currents affect climate?

• Ocean currents only affect temperature but not precipitation.

• Ocean currents transport heat and influence temperature and precipitation patterns.

• Ocean currents have no effect on climate.

• Ocean currents cause extreme weather events.

What is the Coriolis effect and how does it influence ocean currents?

• The Coriolis effect is a myth and does not actually influence ocean currents.

• The Coriolis effect is a result of underwater volcanic activity.

• The Coriolis effect causes ocean currents to curve due to the rotation of the Earth.

• The Coriolis effect is caused by the gravitational pull of the moon on ocean currents.

What are the major ocean currents in the Atlantic Ocean?

• North Equatorial Current, Brazil Current, California Current, Labrador Current

• South Equatorial Current, Brazil Current, Benguela Current, East Greenland Current

• Gulf Stream, North Atlantic Drift, Canary Current, Labrador Current

• Equatorial Current, Benguela Current, California Current, East Greenland Current

What are the major ocean currents in the Pacific Ocean?

• Gulf Stream, Labrador Current, Benguela Current, Agulhas Current

• Canary Current, Humboldt Current, East Australian Current, West Wind Drift

• North Equatorial Current, California Current, Kuroshio Current, Antarctic Circumpolar Current

• North Atlantic Drift, South Equatorial Current, Peru Current, East Greenland Current

How does the ocean influence climate and weather patterns?

• The ocean influences climate and weather patterns through the emission of greenhouse gases.

• The ocean influences climate and weather patterns through gravitational pull.

• The ocean has no influence on climate and weather patterns.

• The ocean influences climate and weather patterns through heat transfer, atmospheric circulation, and moisture distribution.

What factor(s) influence the density of seawater?

• temperature

• salinity

• both temperature and salinity

• neither of these influence density

The ocean layer of rapid temperature change with depth is known as the

• deep zone

• trophic level

• pycnocline

• thermocline

What causes surface ocean currents to be deflected?

• deep currents

• the Coriolis effect

• Earth's revolution around the sun

• salinity levels