SOL 4.7 Oceans Review

Oceans cover about _____ of the surface of the Earth.

• 40%
• 50%
• 70%
• 90%

The deepest parts of the oceans are:

• continental shelves
• ocean trenches
• continental slopes
• mid-ocean ridge

This is a diagram of the ocean floor. "A" is the continent, and "B" is the:

• ocean trench
• continental slope
• mid-ocean ridge
• continental shelf

The steep slope "C", at the edge of the continenal shelf, is the:

• continental divide
• continental slope
• ocean slope

"E" on the diagram is:

• a continental slope
• a mid-ocean ridge
• an ocean trench

The salinity of ocean water is:

• Othe temperature of the ocean
• the amount of salt dissolved in the ocean water
• the amount of sand in the ocean

Ocean currents, including the Gulf Stream, are caused by: ________________________________.

• wind patterns and differences in water temperature
• rainfall
• whale movement

As the depth of the ocean increases, the _____________ also increases.

• water pressure
• temperature
• light
• variety of animal life

Many species of ocean organisms live in coral reefs. Most coral reefs are found nearthe equator. What does the location of coral reefssuggest about coral organisms?

• a. Corals need warm seawater to survive.
• b. Corals mostly live around volcanic islands.
• c. Ocean currents keep corals from migrating.
• d. Most ocean waters are too deep for corals.

What provides most of the Earth's oxygen?

• phytoplankton
• air
• trees