Hydrology

What percentage of Earth is covered with water?

• 80%

• 60%

• 71%

• 70%

Tags

NGSS.MS-ESS2-4

What percentage of the water on Earth is salt water?

• 97%

• 80%

• 60%

• 95%

What percentage of the water on Earth is fresh water?

• 97%

• 3%

• 1%

• 2%

Tags

NGSS.MS-ESS2-4

What percentage of freshwater sources is trapped in glaciers/icecaps?

• 86.7%

• 78.7%

• 58.7%

• 68.7%

Tags

NGSS.MS-ESS2-4

What percentage of freshwater sources is trapped underground?

• 31.1%

• 30.1%

• 32.1%

• 68.7%

Tags

NGSS.MS-ESS3-1

At what stage do we gain energy and at what stage do we lose energy?

• Gain:Evaporation Lose:Precipitation

• Gain:Precipitation Lose:Condensation

• Gain:Condensation Lose:Precipitation

• Gain:Evaporation Lose:Condensation

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Name two factors that increase salinity

• Evaporation and freezing

• Near the mouth of river and freezing

• Condensation and Precipitation

• Evaporation and melting

As human population increases exponentially, what happens to the amount of freshwater?

• it increases

• it decreases

• it stabilizes

• it increases then decreases

High levels of which is likely to improve biotic index (amount of life) of a stream?

• algae growth

• decaying matter

• suspended solids

• dissolved oxygen

Which is the most common contamination source for freshwater resources?

• runoff

• digging wells

• melting of glaicers

• lightening