Water Flashcards
Why is there more water used in MEDCs?
Sanitation
Central heating
Water used in industry
How many people do not have access to enough water?
1 billion people
What are aquifers?
Drilling to the water table and pump water to the surface
What are the benefits aquifers?
Not likely to be polluted
Not as much purification required
What are the disadvantages of aquifers?
Can be difficult to get to and drilling is expensive
What are desalination plants?
Distill sea water by removing salts
What are the benefits of desalination plants?
Doesn’t affect fresh water
No shortage of sea water
What is the disadvantage of desalination plants?
Very expensive
How do people use lakes and rivers for water sources?
Purifying water
What is the advantage of lakes and rivers?
Cheap
What are the disadvantages of lakes and rivers?
Pollution
Overused
What is large-scale rainwater harvesting?
Reservoirs, made by large dams
What are the benefits of large-scale rainwater harvesting?
Can be used for HEP
Supports many people
What are the disadvantages of large-scale rainwater harvesting?
Large surface area - large amount of evaporation
Dam is expensive
What is small-scale rainwater harvesting?
Houses have run-off water storage tanks made
