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Chapter 26

Chapter 26. Energy Resources. BELLWORK. Answer the following questions in the bellwork section of your binder . What material is used to heat the marshmallows here ? What do you use to cook your food at home?. Where does all this energy come from?. Video – Alternative Energy Sources.

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Chapter 26

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  1. Chapter 26 Energy Resources

  2. BELLWORK Answer the following questions in the bellwork section of your binder. What material is used to heat the marshmallows here? What do you use to cook your food at home?

  3. Where does all this energy come from?

  4. Video – Alternative Energy Sources • http://app.discoveryeducation.com/player/view/assetGuid/884A8F82-8135-4FD5-A3CF-5F364EA85C6D

  5. Define Key terms • Fuel • Peat • Fossil fuel • Photovoltaic cell • Geothermal energy • Biogas • Gasohol • Energy efficiency • Cogeneration • Sustainable energy

  6. Earth’s Geochemical CyclesWater Cycle

  7. Earth’s Geochemical CyclesThe Carbon Cycle

  8. Earth’s Geochemical CyclesThe Nitrogen Cycle

  9. Conventional Energy Resources • Transfer of Solar Energy • Traditional Sources of Energy • Wood • Field Crops • Fecal Material • Peat • Fossil Fuels • Coal • Petroleum and Natural Gas • Migration

  10. Alternative Energy Resources • Solar Energy - unlimited • Passive Solar Heating • Active Solar Heating • Solar Cookers • Photovoltaic Cells • Energy from Water • Geothermal Energy • Wind Energy • Nuclear Energy • Biomass • Biogas • Ethanol/Methanol

  11. Conservation of Energy Resources • Energy efficiency – use fewer resources to provide more usable energy • Cogeneration – the production two usable forms of energy, such as steam and electricity, at the same time from the same process. • Sustainable energy – will ensure current and future energy needs

  12. Assignment/Classwork • 26.1 section assessment pg. 689 #1 – 3 • 26.2 section assessment pg. 697 #1 – 4 • 26.3 section assessment pg. 703 #1 – 4

  13. Chapter 27 Human Impact on Earth Resources

  14. Make a list of some ways humans impact Earth • State if it is positive or negative impact • What determines the level of impact? • Are the impacts permanent or temporary?

  15. Population and the Use of Natural Resources • All organisms use resources to sustain life. • The use of resources impacts the environment • Population increases, so does the demand for resources • Resources are limited • Population will reach the carrying capacity and stop growing • Human population explosion

  16. Human Impact on Land Resources • We require a huge amount of land resources • Iron, aluminum, copper, sand, gravel, and limestone • Disrupts Earth’s surface • Mining • Agriculture • Monoculture • Pesticides • Topsoil • Forestry –loss of topsoil • Urban development

  17. Human Impact on Air Resources • Human activities cause air pollution • Health problems • Global impact • Acid prercipitation • Ozone depletion • Global warming

  18. Human Impact on Water Resources • Conservation is the best way to stretch supplies of freshwater • Human activities pollute the water • Decrease water pollution in U.S. • The Safe Drinking Water Act 1974 • Clean Water Act 1972

  19. Video – Discovery Education • http://app.discoveryeducation.com/player/view/assetGuid/A46DBFBD-7378-475A-8810-7637D22DBC32

  20. Assignment / Classwork • Groups of 2: • 27.1 section assessment pg. 715 #1-3 • 27.2 section assessment pg. 723 #1-3 • 27.3 section assessment pg. 729 #1-4 • 27.4 section assessment pg. 733 #1-4

  21. End of Chapter

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