2C - Water Flashcards
What is water security?
Having reliable & sustainable source of enough good quality water to meet everyone’s needs
What is a water deficit?
When there’s not enough water to meet people’s needs
What is a water surplus?
Having more water than needed
Name 3 things water security depends on
- Amount of water available
- Number of people who need it
- Ability to access water
What is water insecurity?
Not enough clear water to keep everyone healthy, or enable them to make a living
What is water stress?
- When demand for water exceeds supply during a certain period
- Or when water us not of high enough quality to use
Name 2 reasons why water demand is rising
- Economic development
- Rising population
Explain why water demand is rising due to rising population + give stat
Each person needs water & need more food
Irrigation for agriculture uses 70% of world’s freshwater resources
Name 3 reasons why water demand is rising due to economic development
- Industrialisation
- Energy Production
- Rising living standards
Explain why water demand is rising due to industrialisation
- Countries become more developed = produce more goods
- Manufacturing uses a lot of water
Explain why water demand is rising due to energy production
15% of water used to produce energy
Explain why water demand is rising due to rising living standards
- As countries develop = wealth increases = higher standard of living
- Increases water use = more appliances
Name 2 physical factors that affect water availability
- Climate
- Geology
Explain how climate affects water availability
- Rely on rainfall = feeds lakes and rivers = water supply
- Hot = water lost due to evaporation
Explain how geology affects water availability
- Rain falls on impermeable rock = flows into rivers and lakes
- Easy to get water from
- Rain falls on permeable rock = flows through them & forms underground water stores (aquifers)
- Harder to get to but useful in dry places