Water Resources

Question 1

Where does our water come from? What is the hydrologic cycle & how does it work?

Answer 1

Hydrologic cycle: Evaporation, condensation and precipitation

Question 2

How much global water (in percentage) is locked up in the oceans, or in snow, or in
lakes and rivers? Know these proportions.

Answer 2

97.6% is in Oceans & Saline lakes
2.4% remaining is not salty water and of that non- saltine water, 87.2% is in ice and snow (Antarctica glaciers) so, 13% of the 24 fresh water is in liquid form. 12% of 87.2% water is underground and 1% is liquid fresh water.
12% Ground Water
of that 0.8% Fresh Surface Water

Question 3

online:

Answer 3

97. 6% is in Oceans & Saline lakes
98. 2% Ice & Snow

12% Ground Water

0.8% Fresh Surface Water

Question 4

What are the three major ways in which humans use water? What are the ways in
which domestic water is used? What activity constitutes the largest use of domestic water?

Answer 4

In the US it is the single largest use of domestic water is toilet flushing

** • Toilet flushing (38%), bathing (31%), laundry (20%) toiletries (5%),

drinking/cooking (6%), gardening