Ocean Water Quiz

What percentage of Earth's water is made up of saltwater?

• 3%

• 97%

• 70%

• 30%

How is the salinity of ocean water primarily increased?

• By the evaporation of freshwater leaving salt behind

• By the addition of freshwater from rivers

• By the melting of glaciers and icebergs

• By the collection of rainwater

Tags

NGSS.MS-ESS2-4

What causes ocean currents?

• The rotation of the Earth on its axis

• The movement of marine animals

• Salinity differences, wind, and/or temperature differences

• The gravitational pull of the moon

Tags

NGSS.MS-ESS2-6

Which of the following activities would cause a decrease in the salinity of ocean water?

• Water from a melting iceberg

• Water entering the ocean from a river

• Evaporation

• Precipitation directly entering the ocean

Tags

NGSS.MS-ESS2-4

Label the parts of the water cycle with: Precipitation, Evaporation, Condensation, Collection. Which steps are responsible for the salt in our oceans?

• Precipitation, Evaporation

• Condensation, Collection

• Evaporation, Collection

• Precipitation, Condensation

Tags

NGSS.MS-ESS2-4

The currents in the provided illustration are primarily caused by what?

• Wind

• Salinity

• Temperature

• All of the above

Tags

NGSS.MS-ESS2-6

Colder water can be found on the bottom of the ocean while warmer water can be found on top. True or False?

• True

• False

Tags

NGSS.MS-ESS2-6

Based on the map, you would expect ocean currents in the North Atlantic to move from:

• West to east

• East to west

• North to south

• South to north

Tags

NGSS.MS-ESS2-6

A measurement of the amount of dissolved salt in water is ​

• Salinity
• Turbidity
• pH

The MORE salt, the ________________

• less dense the water.

• more dense the water.