Oceanography

Adding salt to water makes it less dense.

• True
• False

As you go deeper in the ocean, the water is warmer and less salty.

• True
• False

Are deep currents effected by wind.

• No
• Yes

Which of the following is not a process that decreases the salinity of seawater?

• runoff from land
• icebergs melting
• precipitation
• evaporation

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

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

• depth
• latitude
• temperature
• salt content

Where would you find the lowest density seawater?

• surface zone
• deep zone
• transition zone
• abyssal zone

Which process increases the salinity of water?

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

How are deep currents created?

• Density differences
• Wind
• From runoff and rain
• Continental deflections

What percent of Earth is water?

• 71%
• 50%
• 25%
• 89%