Hydrosphere: The Ocean

What term is the measure of dissolved salts in water?

• Thermocline
• Salinity
• Saltiness
• Tides

What is the most abundant solid dissolved in seawater?

• Magnesium Chloride
• Calcium Chloride
• Potassium Chloride
• Sodium Chloride

What is the major cause of surface currents?

• dolphins
• wind
• hurricanes
• tides

Why does cold water sink in a convection current?

• Less dense
• more dense
• Less humid
• More humid

 How does the Gulf Stream affect the climate in Florida and the United Kingdom?

• Florida and the United Kingdom have colder climates.
• Florida and the United Kingdom have dryer climates.
• Florida and the United Kingdom have warmer climates compared to locations at the same latitude.
• None of the above

A technique that used sound waves to measure the depth of the ocean floor is

• dredging
• sonar
• SCUBA
• weighted lines

Approximately what percentage of Earth's surface is covered by oceans?

• 40%
• 50%
• 60%
• 70%

What happens to pressure as you go deeper into the ocean? 

• increases
• decreases
• stays the same
• doubles

Upwelling is the process where warm, nutrient rich water from deep in the ocean rises to the surface.

• False
• True

An example of an abiotic factor that would impact plankton could be:

• predtors near by

• water pH

• other zooplankton

• primary consumers