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Earth's Water: Types and Importance

Learn about the various types of water on Earth, including freshwater and saltwater. Explore the importance of freshwater scarcity, the significance of surface water vs. groundwater, and the roles of water in sustaining life and facing critical water issues in communities.

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Earth's Water: Types and Importance

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  1. Chapter 2 Section 2 Water on Earth Pages 30-341-3

  2. 1.a. DescribeName and describe the different types of water that make up Earth’s water supply? • Freshwater – Suitable for drinking, 3% of the Earth’s water supply – example Lake • Saltwater – Unsuitable for drinking, 97% of the Earth’s water supply – example Ocean

  3. 1.b. AnalyzeWhy is only a small percentage of Earth’s Freshwater available to us? • Most of the freshwater in underground or frozen in glaciers.

  4. 1.c. ElaborateIn your opinion, which is more important – surface water or groundwater? Why? • Answers may vary Surface water more accessible ground water more abundant.

  5. 2.a. RecallWhat drives the water cycle? • Sun’s Energy Evaporation and Precipitation

  6. 2.b. Make Inferences From what bodies of water do you think most evaporation occurs? Why? • Oceans and Lakes because of the size

  7. 3.a. DefineWhat is a Drought? • A long period of lower-than-normal precipitation or no RAIN.

  8. 3.b. AnalyzeHow does water support life on Earth? • We depend on water for drinking, growing crops, energy, and recreation.

  9. 3.c. EvaluateWhat water problem do you think is most critical in your community? • Is the amount of water wasted in my community on watering of lawns, washing of cars, leaking faucets, and so on.

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