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Transcript of 2/12/15 IN: What are three renewable resources, and three non-renewable resources? Can you name a...
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2/12/15 IN: What are three renewable resources, and three non-renewable resources? Can you name a renewable resource that we use faster than it can be renewed?
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Terms and Objectives
TERMS:
*ENERGY RESOURCE *FOSSIL FUEL *PETROLEUM *NATURAL GAS *COAL *STRIP MINING *ACID PRECIPITATION *SMOG
OBJECTIVES:
*Classify the different forms of fossils
*Explain how fossil fuels are obtained
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Where do humans get useful energy?
Energy Resources – natural resources that humans use to produce energy.
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Remember…
There are many types of renewable and nonrenewable energy resources and all of the energy released from these resources ultimately comes from the sun.
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Where do humans get useful energy? The energy resources on which humans
currently depend the most are fossil fuels.
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What are fossil fuels?
Fossil Fuels – nonrenewable energy resources that form in the Earth’s crust over millions of years from the buried remains of once-living organisms.
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How do fossil fuels work?
Energy is released from fossil fuels when they are burned.
There are many types of fossil fuels, which exist as liquids, gases, and solids, and humans use a variety of methods to obtain and process them which can sometimes have negative effects on the environment.
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Liquid Fossil Fuels
Petroleum – crude oil, an oily mixture of flammable organic compounds from which liquid fossil fuels and other products, such as asphalt, are separated.
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What is separated from petroleum? Gasoline Jet Fuel Kerosene Diesel Fuel Fuel Oil
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Gaseous Fossil Fuels
Natural Gas – a gaseous fossil fuel.Most natural gas is used for heating and for
generating electricity.
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Components of Natural Gas Methane
Fuel
ButaneFuel for camp stoves
PropaneHeating fuel and as a cooking fuel
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Solid Fossil Fuels
Coal – a solid fossil fuel formed underground from buried, decomposed plant material.
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Importance of Coal
Coal , the only fossil fuel that is a rock, was once the leading source of energy in the United States.
People burned coal for heating and transportation.
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How do petroleum and natural gas form? All fossil fuels form from the buried
remains of ancient organisms.
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How does coal form?
Coal forms underground over millions of years from decayed swamp plants.
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The higher the carbon content, the cleaner the material burns.
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Where are fossil fuels found?
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How do humans obtain fossil fuels? Drilling
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How do humans obtain fossil fuels? Strip mining
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Problems with Coal
People began to use coal less because burning coal often produces large amounts of air pollution and because better energy resources were discovered.
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Problems with Coal Acid precipitation
Rain or snow that has a high acid content due to air pollutants.
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Problems with Coal
Coal Mining can be hazardous to those who are working them, they can lower water tables, pollute the water supplies, and cause the overlying earth to collapse.
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Problems with Petroleum
Oil Spills
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Problems with Fossil FuelsSmog – a photochemical fog
produced by the reaction of sunlight and air pollutants.
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Dealing with Fossil Fuel Problems Car pool Use mass transit systems Use alternative energy resources
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OUT: What are the three basic types of fossil fuels?