Ocean Currents & tsunamis

What percentage of the oceans are covered by surface currents caused by winds?

• 5%

• 10%

• 20%

• 50%

What causes surface currents in the ocean?

• The rotation of the Earth

• The gravitational pull of the moon

• Winds blowing over the ocean

• Thermal energy from the sun

Which type of water is more likely to rise to the surface due to being less dense?

• Cold and salty

• Warm and less salty

• Cold and less salty

• Warm and salty

What is the primary effect of the Coriolis effect on ocean currents?

• It causes currents to stop moving

• It changes the temperature of currents

• It causes currents to move in circular patterns

• It increases the salinity of currents

What environmental issue is associated with the Great Pacific Garbage Patch?

• Overfishing in the Pacific Ocean

• Pollution from oil spills

• Trapping of over 700,000 tons of garbage by ocean currents

• Acidification of ocean water

Currents that occur at or near the surface of the ocean are called 

• Deep Currents
• Convection Currents
• Surface Currents
• Wave Currents

Ocean currents bring warm water from the equator towards Earth's

• Southern Hemisphere
• Continents
• Equator
• Poles

The warm, strong current off the coast of Florida is the 

• Gulf Stream
• California Current
• North Equatorial Current
• Brazil Current

Based on the diagram, is the California current a warm or cold current?

• warm current
• cold current

The Gulf stream carries _____________ water from the east coast of The United States to the West coast of Europe.

• Cold

• Warm

• Freezing

• Fresh