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Table of Contents
Investigation 1: Water Observations A Report from the Blue Planet 3 Surface Tension 6 Which Way Does It Go? 8 Opinion and Evidence 10 Water Everywhere 14 Investigation 2: Hot Water, Cold Water Vacation Aggravation 16 Celsius and Fahrenheit 20 Water: Hot and Cold 21 Ice Is Everywhere 24 Investigation 3: Weather and Water Studying Weather 30 Drying Up 37 Surface-Area Experiment 39 Condensation 41 The Water Cycle 44 Investigation 4: Seasons and Climate Climate Regions 48 Wetlands for Flood Control 55 Conserving Water during Droughts 61 Investigation 5: Waterworks Water: A Vital Resource 63 Natural Resources 68 Ellen Swallow Richards: An Early Ecologist 73 Making Drinking Water Safe 77 Using the Energy of Water 83 References Science Safety Rules 90 Glossary 91 Index 941