energy resources essential question: how do energy resources affect the environment?
TRANSCRIPT
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Energy ResourcesEssential Question:How do energy resources affect the environment?
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Vocabulary• Conservation• Nonrenewable• Fossil fuel• Pollution• Global warming• Renewable• Solar energy• Wind energy• Hydropower• Biomass• Geothermal energy
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Concept
•Types of energy sources
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Conservation
•Careful use and management of resources.
•Examples:▫Insulating walls;▫Constant thermostat temp;▫Less air conditioning.
•Save / stewardship
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Nonrenewable
•Used much faster than it can be replaced.•(Can not be replaced in our life time.)
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Fossil Fuel
•Formed over millions of years from the decayed remains of ancient plants and animals.
•Examples: coal; petroleum/oil; natural gas.
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Pollution
•Releasing unwanted materials into the environment through burning fossil fuels.
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Global Warming
•Rising average temperatures around the world.
•Fossil fuels release CO2 into atmosphere.•Due to use of machines powered by fossil
fuels.
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Renewable
•Can be replaced as it is used or can not be used up.
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Solar Energy
•Energy from the sun.•Uses: Solar panels; solar cells; solar
batteries.•Advantage: no pollution.•Disadvantage: expensive.
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Wind Energy
•Energy of moving air.•Uses: windmills or turbines.•Advantage: no pollution.•Disadvantage: noisy, danger to wildlife.
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Hydropower
•Energy of moving water.•Uses: power plants to produce electricity.•Advantage: no pollution.•Disadvantage: only in areas with large
river; creates reservoirs – floods nearby areas.
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Biomass
•Material from living things is used as an energy source.
•Uses: burning wood & fermenting crops (ethanol.)
•Advantage: reduces gasoline use.•Disadvantage: releases CO2 &
uses food source.
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Geothermal Energy
•Heat energy from inside Earth.•Uses: Heat buildings; produce electricity.•Disadvantage: Requires location over
volcanically active ground.
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