Water and its management

Topics

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Sample objectives

What this unit covers

• Global water distribution: Students should be able to explain how water is distributed across the Earth, including details about oceans and various sources of fresh water such as ice sheets, glaciers, groundwater, the atmosphere, lakes, and rivers.
• The water cycle: Students should be able to explain and analyze the water cycle, including processes such as precipitation, surface run-off, interception, infiltration, through-flow, groundwater flow, transpiration, evaporation, and condensation.
• Water supply: Students should be able to identify and explain the various sources of fresh water utilized by individuals, including aquifers, wells, rivers, reservoirs, and desalination plants.
• Water usage: Students should be able to explain the various applications of freshwater, including its use in domestic, industrial, and agricultural contexts.
• Water quality and availability: Students should be able to compare the access to safe drinking water in various regions, highlighting differences between areas with abundant water resources and those with limited supplies, as well as examining the potential for water-related conflicts and the availability of potable water in both urban and rural settings.
• Multipurpose dam projects: Students should be able to explain and assess multipurpose dam projects, including site selection, and analyze their environmental, economic, and social effects, as well as their sustainability.
• Water pollution and its sources: Students should be able to explain the origins of water pollution, including: domestic waste such as sewage from both urban and rural areas, industrial activities, and agricultural methods.
• Impact of water pollution: Students should be able to describe and explain how water pollution affects both people and the environment, including: global disparities in sewage and water treatment, the risk of infectious diseases such as typhoid and cholera, the buildup of toxic substances from industrial activities in lakes and rivers, the bioaccumulation of these toxins in food chains, the impact of acid rain on aquatic organisms, and the process of nutrient enrichment that leads to eutrophication.
• Managing pollution of fresh water: Students should be able to outline and clarify methods for enhancing the quality of fresh water, including better sanitation practices, sewage treatment processes, and regulations for pollution control.
• Managing water-related disease: Students should be able to explain the life cycle of the malaria parasite and assess various methods for its control, including the use of antimalarial medications, vector management, and eradication efforts. Additionally, they should outline strategies for cholera control, focusing on the provision of safe drinking water through methods such as boiling and chlorination. Case studies should include an analysis of the effects of a specific multipurpose dam project and an examination of the causes, effects, and management of pollution in a specific water body.