L1 ap physical factors

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L1 ap physical factors

  1. 1. CONTESTED PLANET UNIT 3 Topic 2: Water Conflicts
  2. 2. Physical factors that control water supply
  3. 3. Why is water such an issue?
  4. 4. Despite its importance, water only makes up 0.02% of Earth’s mass This is all the world’s water gathered into one sphere – a surprisingly small amount. Video here – from 4.24
  5. 5. Hydrological System(p33) • Inputs, stores, flows and outputs.
  6. 6. What are the Physical Factors controlling water supply? (p34) • Physical factors effecting the Hydrological Cycle 1. Climate 2. River systems 3. Geology
  7. 7. 4. Seasonality • Precipitation patterns vary throughout the year. For example Vancouver receives much of its rainfall between October and March with less in the summer. • Plants use water most in the spring (evapotranspiration) and this leads to an unbalanced supply and use of water. • Globally the same imbalance can occur causing areas to be particularly dry in their summer and wet in their winter.
  8. 8. Fresh water supply is finite • Finite resource of water, limited amount each year. • Video here

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