How do ocean currents work - TED

What are the two main categories of ocean currents mentioned in the text?

• Surface currents and deep ocean currents

• Northern currents and southern currents

• Fast currents and slow currents

• Warm currents and cold currents

What causes surface currents in the open ocean according to the text?

• Density changes

• Tides

• Earth's rotation

• Wind

What is the major force behind surface currents near the shore?

• Earth's rotation

• Density changes

• Temperature variations

• Wind and tides

What is the name of the loop-like patterns formed by surface currents all over the earth?

• Vortices

• Whirlpools

• Gyres

• Eddies

What is the effect called that causes major streams of wind to form loop-like patterns around the ocean basins?

• Thermohaline Effect

• Gyre Effect

• Conveyor Belt Effect

• Coriolis Effect

What drives deep ocean currents primarily according to the text?

• Changes in the density of seawater

• Tides

• Wind

• Earth's rotation

What is the name of the vertical current set up by the sinking of cold, salty water in the ocean?

• Surface circulation

• Conveyor Belt circulation

• Thermohaline circulation

• Gyre circulation

What is the longest current in the world that carries nutrients and snaking all around the globe?

• Super Stream

• Mega Gyre

• Ocean Whirlpool

• Global Conveyor Belt