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 http://app.discoveryeducation.com/player/view/assetGuid/884A8F82-8135-4FD5-A3CF-5F364EA85C6D

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

Earth’s Geochemical Cycles Water Cycle

Earth’s Geochemical Cycles The Carbon Cycle

Earth’s Geochemical Cycles The Nitrogen Cycle

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

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

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

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

Human Impact on Earth Resources Chapter 27 Human Impact on Earth Resources

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?

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

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

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

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

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

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

End of Chapter