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Category: ESS Topic 4 Water

  • ESS 4.2.2 Water Scarcity and Conservation

    ESS 4.2.2 Water Scarcity and Conservation

    Learning Objectives Part 1: Water Scarcity Part 2: Domestic Conservation Part 3: Industrial Conservation Greenhouses Water recycling in greenhouses is common, but the extent varies based on size. Example – Metrolina Greenhouses in Huntersville, North Carolina, USA Aquaponics Aquaponics combines aquaculture (raising aquatic animals like fish or prawns in tanks) with hydroponic farming (growing plants…

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  • ESS 4.2.3 [AHL] Water Stress

    ESS 4.2.3 [AHL] Water Stress

    Learning Objectives Part 1: Global Water Stress Part 2: Factors Increasing Water Stress Human Factors Natural Factors The causes of increasing water stress vary depending on the socioeconomic context: Other contributing factors include: Case Study: Water Stress and the Indian Textile Industry Part 3: Transboundary Dispute River or Aquifer Countries Involved in the Dispute Subject…

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  • ESS 4.2.1 Water Access and Uses

    ESS 4.2.1 Water Access and Uses

    Learning Objectives Part 1: Water Security Part 2: Factors of Freshwater Availability & Access Social Factors Economic Factors Cultural Factors Political Factors Part 3: How We Use Water General Use of Water Unsustainable Demands Future Water Scarcity Trends Water Consumption by Region Key Factors Driving Increased Water Demand Based on the above projection, Part 4:…

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  • ESS 4.1.3 [AHL] Properties of Water

    ESS 4.1.3 [AHL] Properties of Water

    Learning Objectives Part 1: Properties of Water Structure & Properties Part 2: Water as C Sink Carbon in Oceans & Seabed Sediments Oceans as a Carbon Sink Ocean Acidification Effects of CO₂ Absorption in Oceans Part 3: Water Stratification Water Stratification Seasonal Stratification Changes Stratification Zones in Lakes Factors Affecting Stratification Stability Permanent Stratification (Meromictic…

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  • ESS 4.1.2 Human Impacts on the Hydrological Cycle

    ESS 4.1.2 Human Impacts on the Hydrological Cycle

    Learning Objectives Part 1: Human Activities Agriculture Table 1: Influence of ground cover on infiltration rates Ground cover Infiltration rate (mm h⁻¹) Old permanent pasture 57 Permanent pasture: moderately grazed 19 Permanent pasture: heavily grazed 13 Strip-cropped 10 Weeds or grain 9 Clean-tilled 7 Bare, crusted ground 6 Deforestation Urbanization Part 2: Steady State of…

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  • ESS 4.1.1 The Hydrological Cycle

    ESS 4.1.1 The Hydrological Cycle

    Learning Objectives Part 1: Hydrological Cycle Part 2: Hydrological Cycle as a System Recall that a system would have an input, process and storage, and an output. Inflows and Outflows of a Lake Inflows: Outflows: Part 3: Transfer & Transformation Water Cycle Transfers Water Cycle Transformations Part 4: Stores in the Hydrological Cycle Major Stores…

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