Learning objective
4.1.1—Water movement drivers
• Solar radiation and gravity • Heat for evaporation, gravity for drainage
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Course review
4.1 Water systems
Review each learning objective in this topic, then open its concept explanation or question set.
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Learning objective
4.1.2—Hydrological cycle
• System with stores and flows • Stores: boxes; flows: arrows
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Learning objective
4.1.3—Hydrological cycle stores
• Oceans (96.5%), glaciers/ice caps (1.7%), groundwater (1.7%) • Surface freshwater (0.02%), atmosphere (0.001%), organisms (0.0001%)
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Learning objective
4.1.4—Hydrological cycle flows
• Transpiration, sublimation, evaporation, condensation, advection, precipitation • Melting, freezing, run-off, infiltration, percolation, streamflow, groundwater flow
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Learning objective
4.1.5—Human activity impacts
• Agriculture, deforestation, urbanization alter flows and stores • Reduced evapotranspiration, increased run-off → flash floods
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Learning objective
4.1.6—Water body steady state
• Flow diagrams of inputs and outputs • Calculate sustainable harvesting rates
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