4.1 Water systems

4.1 Water systems Quiz

IB Environmental Systems and Societies HL: Quiz

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5 questions, one answer each

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  1. 1. HL: Which causes ocean acidification?

    • A. Oxygen dissolving in sea water
    • B. Carbon dioxide forming carbonic acid in sea water
    • C. Salt dissolving in rain
    • D. Warming of the sea floor

  2. 2. HL: The thermocline is the layer:

    • A. Of constant temperature at the lake bed
    • B. Where temperature changes rapidly between warm and cold water
    • C. Of fresh water on the surface
    • D. Where water is densest at the surface

  3. 3. Which is the largest store of water on Earth?

    • A. Glaciers
    • B. Groundwater
    • C. Oceans
    • D. Lakes

  4. 4. HL: What does upwelling bring to the surface?

    • A. Warm, nutrient-poor water
    • B. Cold, nutrient-rich water
    • C. Fresh water only
    • D. Plastic debris

  5. 5. HL: Thermohaline circulation is driven by differences in:

    • A. Wind and tide
    • B. Temperature and salinity
    • C. Light and pressure
    • D. Depth and size

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