Ocean currents

Movements of ocean water in a continuous flow are called?

• ocean currents
• global winds
• air mass
• front

What heats the Earth's oceans?

• People

• Boats

• a heater

• sun

Two types of ocean currents are

• local and global
• sea and land
• surface and deep
• warm and cold

Warm ocean currents generally come from

• The North Pole
• The South Pole
• The Equator
• Both A and B

A horizontal movement of ocean water that is caused by wind and that occurs at or near the ocean's surface.

• Gulf Stream
• Global Conveyor Belt
• Surface Current
• Gyre

The salt content of a substance

• density

• temperature

• convection

• salinity

Decreasing ocean temperature causes the density of the water to ______.

• decrease

• increase

• stay the same

• fluctuate

______ causes deep ocean currents

• The Coriolis Effect

• gravity

• wind

• density differences

______ causes surface currents.

• The Coriolis Effect

• gravity

• density differences

• wind

As plants and animals in the ocean die, the nutrients produced from their decay _____.

• are recycled by the Global Conveyor Belt

• sink to the bottom

• are destroyed by sunlight

• become coral reefs