Earth's Resources 2
Before You Read 2
Earth's Resources 6
Section 1:Renewable Resources 8
Section 2:Nonrenewable Resources 12
Section 3:The Problem with Energy Production 18
genre Reading an Encyclopedia Entry Geothermal Energy 22
Section 4:Energy Conservation 24
After You Read 28
Glossary 30
Understanding Natural Resources 32
Before You Read 32
Understanding Natural Resources 36
Section 1:Natural Resources around Us 37
Section 2:Energy and How We Use It 41
genre Reading an Encyclopedia Entry Pollution 50
Section 3:Conserving Energy 55
After You Read 58
Glossary 60
Using Natural Resources 62
Before You Read 62
Using Natural Resources 64
Section 1:Our Precious Natural Resources 65
Section 2:Nonrenewable Resources Produce Energy 71
genre Reading an Encyclopedia Entry Mining 74
Section 3:Renewable Resources Produce Energy 78
After You Read 88
Glossary 90
Heating Up 92
Before You Read 92
Heating Up 96
Section 1:Energy in Motion 98
Section 2:Heat Makes Molecules Move 102
Section 3:What is Heat? 106
Section 4:How Heat Transfers 108
genre Using a Web Site Ultrauiolet Radiation 114
After You Read 118
Glossary 120
Heat Around Us 122
Before You Read 122
Heat Around Us 126
Section 1:Heat Energy 127
Section 2:Temperature Measures Motion 134
genre Using a Web Site Temperature Scales:Fahrenheit and Celsius 136
Section 3:The Give and Take of Heat Transfer 138
After You Read 148
Glossary 150
Understanding Heat 152
Before You Read 152
Understanding Heat 154
Section 1:Heat Around Us 155
Section 2:Heat and Molecule Movement 160
Section 3:Heat Transfer 164
Section 4:Heat and Chemical Reactions 172
genre Using a Web Site Exploring Chemical Reactions 174
After You Read 178
Glossary 180