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Chapter Introduction Lesson 1 Sources of Energy Lesson 2 People and the Environment

Chapter Introduction Lesson 1 Sources of Energy Lesson 2 People and the Environment Lesson 3 Saving Resources Chapter Wrap-Up. Sources of Energy. Essential Question What are the ways electricity can be produced?. Sources of Energy. Renewable resources Nonrenewable resources

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Chapter Introduction Lesson 1 Sources of Energy Lesson 2 People and the Environment

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  1. Chapter Introduction Lesson 1Sources of Energy Lesson 2 People and the Environment Lesson 3Saving Resources Chapter Wrap-Up

  2. Sources of Energy • Essential Question • What are the ways electricity can be produced?

  3. Sources of Energy • Renewable resources • Nonrenewable resources • Inexhaustible resources • Fossil fuels • Alternative energy source • Nuclear energy • Geothermal energy • Hydroelectricity

  4. Renewable resources are materials from the environment that people use that can be replaced relatively quickly.

  5. Nonrenewable resources are materials from the environment that people use that cannot be replaced.

  6. Inexhaustible resources is an energy source that cannot be used up.

  7. Fossil fuels are a fuel formed from the decay of ancient forms of life.

  8. What are alternative energy sources? • Alternative energy source is a source of energy other than the burning of fossil fuel.

  9. Nuclear energy is the energy contained in the nucleus of an atom.

  10. Geothermal energy is heat from below the Earth’s surface.

  11. Hydroelectricity is electricity generated by running water.

  12. People and the Environment • Essential Question • How does using natural resources affect the environment?

  13. People and the Environment • Pollution • Smog • Acid rain • Thermal pollution • Monetary costs • Nonmonetary costs • Cost-effectiveness

  14. Pollution is a harmful change to the environment.

  15. Smog is a mixture of smoke and fog, formed when smoke and fumes collect in moist, calm air.

  16. Acid rain is acid that is formed when the sulfur and nitrogen gases produced by burning fossil fuels combine with water vapor in the air and then fall to Earth as rain.

  17. Thermal pollution is the addition of warm water into a stream or lake that is normally cold.

  18. Monetary cost is the cash value of energy use: examples include the cost of heating a home or the large amount of money used to clean up an oil spill.

  19. Nonmonetary cost is the environmental consequences of energy use; examples include the generation of pollution and long-term health problems caused for people.

  20. Cost-effectiveness is a measure determined by comparing the costs and the consequences of different ways of doing something.

  21. Saving Resources • Conservation • Biomass • Hydrogen fuel • Reduce • Reuse • Recycle

  22. Conservation is saving, protecting, or using natural resources wisely.

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