• Arctic Ocean
• Atlantic Ocean
• Indian Ocean
• Pacific Ocean

• Atlantic Ocean
• Arctic Ocean
• Indian Ocean
• Pacific Ocean

What type of lines are shown here?

• The map shows lines of longitude.

• The map shows lines of latitude.

The ocean covers 50% of Earth's surface.

• True
• False

Plankton are microscopic single-celled oragnisms. 

• True
• False

As you go deeper in the ocean, the _______ decreases. 

• water
• salinity
• temperature
• water pressure 

What causes the tides to change?

• rotation of the Earth and its spin

• The pull of the Sun

• The pull of the Moon

• The pull of mostly the Sun, some of the Moon

• The pull of mostly the Moon, some of the Sun

The Gulf Stream is

• Off the coast of the Gulf of California

• a current in the Atlantic Ocean that flows on the eastern coast of North America

• Off the coast of the Gulf of Jersey

• Flowing south from England along the coast of Aftrica

Surface currents are a result of

• Global Wind Patterns
• Earth's Rotation
• Density
• All of the above

Deep Ocean currents are a result of

• Global Wind Patterns
• Earth's Rotation
• Density
• All of the above