Ocean Current Text Tuesday

What are the two main kinds of ocean currents?

• Surface currents and density currents

• Surface currents and tidal currents

• Density currents and gyres

• Tidal currents and gyres

What percentage of the ocean is made up of surface currents?

• 10%

• 20%

• 50%

• 90%

What causes surface currents?

• Wind blowing over the ocean

• Earth's rotation

• Temperature differences

• Salinity differences

What is the Coriolis effect?

• The deflection of moving objects due to Earth's rotation

• The movement of ocean currents due to wind

• The warming of water at the equator

• The sinking of cold, dense water

What is upwelling?

• The process where cold, deep water rises bringing nutrients to the surface

• The movement of warm water towards the poles

• The sinking of salty water at the poles

• The formation of gyres in the ocean

What is the main driver of the Great Ocean Conveyor Belt?

• Thermohaline circulation

• Wind patterns

• Earth's rotation

• Gyres

Where is the Gulf Stream located?

• From the western coast of Africa to the southeastern tip of North America

• From the equator to the poles

• From the poles to the equator

• From the Pacific Ocean to the Atlantic Ocean