Water World
Teacher recommended
?- Created by: joshua millyard
- Created on: 31-05-13 13:34
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- Water world
- Water on the Planet
- Stores of water
- glaciers and snow cover
- oceans
- groundwater
- lakes and rivers
- water in closed system
- system known as hydrological cycle
- Stores of water
- Workings of the hydrological cycle
- EVAPORATION transfer water liquid to water vapour
- TRANSPIRATION EVAPOTRANSPIRATION liquid evaporated from plants
- CONDENSATION water vapour becomes liquid water
- PRECIPITATION rain snow
- SURFACE RUNOFF GROUNDWATER FLOW precipitation hit ground soak move downhill underwater flow
- STREAMFLOW groundwater flow surface run off gather at river
- The impact of climate change on vulnerable regions
- bring more rain
- temperature change
- hydrological cycle will be altered
- ares most likely experience increasing water stress red ares across North Africa Middle Ease central Asia
- Factors that lead to more stress
- decreasing rainfall
- less reliable rainfall
- increasing temperatures
- increasing population
- increasing industrialisation
- Factors that lead to more stress
- The impact of unreliable and/or insufficient water supply
- shortages unexpected
- long-term changes both demand supply
- reasons for risk of water shortages
- rising demand cos changing land use
- rising demand cos population increase
- falling supply cos short-term changes in climate
- falling supply because of long-term changes in climate
- Quality not quantity
- Africa worst % ppl cannot access fresh water
- water pollution in developing world due sewage
- water also polluted by industry
- Toxic waste from mines
- Heap-leach mining uses sodium cyanide
- Plant fertilisers
- nitrates run off into rivers and lakes
- Chemical waste
- water drunk china dangerous levels arsenic
- Radioactive waste
- nuclear waste remain dangerous for 1000's of yrs
- Toxic waste from mines
- Human interference
- Humans disrupted water supply
- changing land use, such as deforestation
- Talking too much ground water (over-abstraction)
- reservoir construction
- Humans disrupted water supply
- The costs and benefits of large-scale water management projects
- Big dams
- flood control for areas downstream of dam
- supply of fresh water for agriculture, industry n domestic consumption
- supply power for hydroelectricity
- Three Gorges Dam
- Big dams
- Small scale solutions to water management issues
- bottom up projects controlled by local community
- relatively cheap and easy to set up
- Easy to maintain using only simple (intermediate technology
- addressing local issues especially water quality
- Scheme
- Rainwater harvesting
- How does it work?
- store rainwater jars
- jars cheap 2 buy high capacity
- Possible drawbacks?
- jars can be expensive
- villages do not have enough labour make jars acces loans arranged help purchase
- How does it work?
- Rainwater harvesting
- Water on the Planet
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