Oct 28 Lecture: Water Resources

Question 1

water use vs water consumption

Answer 1

water use= the water is returned back to the hydrological cycle after being used
- eg industrial, municipal, rural water use

water consumption= little water is returned back to its point of origin
- eg. agriculture use

Question 2

what is one way of bringing water to areas that have little water available?
- issue?

Answer 2

aqueducts! = structure built to move water

issue= the diversion can cause problems in the source regions if too much water is diverted

Question 3

2 methods to purify existing water sources

Answer 3

1. filtration

2. distillation

Question 4

filtration=

Answer 4

water is filtered through membranes that screen out impurities
- doesn’t work well when there’s a high soluble component

Question 5

distillation=

Answer 5

heating the water and collecting the vapor

- can be used to obtain useable water from seawater (desalination)

Question 6

what’s 1 problem with distillation and a solution

Answer 6

problem= heat source is expensive (coal/ gas/ fuel)

solution= engineered reverse osmosis