Global distribution of water

Question 1

how do dams and reserviors increase water supply

Answer 1

surplus fills reservoir which can be released in a deficit

Question 2

how does water diversion increase water supply

Answer 2

dams built to raise rivers water level and redirect water to chosen location
less disruptive than storage dams
can produce hydroelectric power

Question 3

what are the advantages of the china water transfer scheme

Answer 3

100 million people benefitted
provides water for over 20 cities
prevents over abstraction

Question 4

what are the disadvantages of the china water transfer scheme

Answer 4

large areas flooded which destroys habitats
may increase water stress in the stress
water only available in urban areas

Question 5

what are methods of sustainable water supply

Answer 5

water conservation
recycling
grey water

Question 6

what are the physical factors affecting water supply

Answer 6

geology- rain falling on permeable rocks creates aquifers which are harder to access
climate

Question 7

what are the social and economic factors affecting water supply

Answer 7

limited infrastructure-water pipes and sewers not built quick enough to prevent contamination of sewage
poverty- people find other water supplies as they cannot afford to pay for the water

Question 8

why is demand for water increasing

Answer 8

higher quality of life
industrialisation
energy production