L1 ap physical factors
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CONTESTED PLANET UNIT 3 Topic 2: Water Conflicts
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Transcript of L1 ap physical factors
CONTESTED PLANET UNIT 3
Topic 2: Water Conflicts
Physical factors that control water supply
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
Hydrological System(p33)
• Inputs, stores, flows and outputs.
What are the Physical Factors controlling water supply? (p34)
• Physical factors effecting the Hydrological Cycle1. Climate 2. River systems 3. Geology
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.
Fresh water supply is finite
• Finite resource of water, limited amount each year.
• Video here
