Ocean Water

Which represents the distribution of water on Earth?

• 3% freshwater, 97% salt water
• 97% freshwater, 3% salt water
• 71% freshwater, 29% salt water
• 29% freshwater, 71% salt water

Which process does NOT lead to a decrease in the salinity of water?

• runoff from land
• precipitation
• sea ice melting
• evaporation

In addition to salinity, what factor affects the density of seawater?

• depth
• latitude
• temperature
• salt content

Seawater is typically denser than freshwater due to seawater’s —

• Greater depth
• Lower freezing point
• Smaller mass
• Higher salinity

As we go deeper into the ocean, salinity ___________. 

• Doubles
• Decreases 
• Increases
• Remains the same 

The highest salinity would be found in which of the following areas?

• an area with high rates of precipitation
• an area with high rates of evaporation
• an area with plenty of runoff
• all of the above

Which process increases the salinity of water?

• runoff from land
• formation of sea ice
• precipitation
• melting of sea ice

What term is the measure of dissolved salts in water?

• Thermocline
• Salinity
• Saltiness
• Tides

The higher the salt content in the ocean the ________ dense the water will be.

• less
• more

Surface currents are a result of

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