chapter 9: energy resources. energy conservation is the practice of using less energy. examples:
TRANSCRIPT
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Chapter 9: Energy
Resources
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Energy Conservation is the practice of using less energy. • Examples: • http://study.com/academy/lesson/energy-conservation-and-energy-efficiency-examples-and-differences.html
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Renewable Sources of Energy
resources that are always there, never run out, and renew themselves easily
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Nonrenewable Sources of Energy
resources that can be used up and cannot be reproduced
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Coal- Advantage• Easy to transport (move from
place to place), burns easily, and cheap
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Coal- DisadvantagesPollutes the air, adds to greenhouse effect due to excessive CO2, Nonrenewable
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Coal- MiscellaneousSolid fossil fuel made from the remains of dead swamp plants; factories use coal
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Oil- AdvantageProduces large amounts of energy, one of the most abundant, easy to transport
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Oil- DisadvantagesPollutes the air, water, and ground! adds to greenhouse effect due to excessive CO2, Nonrenewable
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Oil- MiscellaneousU.S. uses about 1/3 of ALL oil produced in the world, but we only have 3% of Earth’s oil supply in our country: gas for cars comes from refined oil
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Solar- Advantages Pollution free, low maintenance cost, noise free, rebates from the government, renewable
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Solar- Disadvantages Requires sunshine (doesn’t work @ night!) Expensive solar panels
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Solar- MiscellaneousHeats up the inside of cars in parking lots – this is called passive heating: provides electricity
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Wind- Advantages• Renewable• No pollution• Cheap once built• Energy can be
stored• Large amounts of
energy produced
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Wind- Disadvantages
• Requires strong and steady winds
• Uses noisy generators
• Can kill birds• Cast shadows on
the land
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Wind- Miscellaneous
Fastest-growing energy source in the WORLD; electricity
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Hydroelectric- Advantages
Renewable, No pollution, controls the risks of floods, provides water areas that could otherwise be without.
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Hydroelectric- Advantages
Renewable, No pollution, controls the risks of floods, provides water areas that could otherwise be without.
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Hydroelectric- disadvantagesDams cause harm to the natural environments, requires HUGE flowing water source. Stop the natural flow of water!
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Hydroelectric- Miscellaneous
Most widely-used renewable resource: electricity for homes/buildings
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Geothermal- Advantages
Renewable, No pollution, enormous amounts of stored energy! simple and safe{Watch Youtube: Geothermal Thermal Heating (1:17) animated}https://www.youtube.com/watch?v=lWOa5E2cDHY
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Geothermal- Disadvantages
Limited availability (it’s not easy to get to)Deep drilling is EXPENSIVE!
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Geothermal- Miscellaneous
In Iceland, most homes are heated with geothermal energy. {Watch Youtube: Geothermal Energy in Iceland (6:42)}https://www.youtube.com/watch?v=XRAQrDduaU0
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Nuclear- AdvantagesProduces huge amounts of energy! Brings jobs to a country, cause little pollution
Plant Vogtle, located in Waynesboro, Ga., contains the first new nuclear units in the US in 30 years.
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Nuclear- DisadvantagesNonrenewable, Produces radioactive wastes (toxic when something goes wrong!)Plant Vogtle, located in Waynesboro, Ga., contains the first new nuclear units in the US in 30 years.
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Nuclear- Miscellaneousreactor meltdowns can cause environmental harm & dangers
Plant Vogtle, located in Waynesboro, Ga., contains the first new nuclear units in the US in 30 years.
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Biomass- Advantages Renewable, carbon neutralCan be made into other fuels
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Biomass- Disadvantages Produces methane gas when it decomposes (this gas traps heat in earth’s atmosphere)
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Biomass- MiscellaneousCan be made from wood, sugar cane, corn, and other crops & garbage ; fuels cars
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Hydrogen- Advantages RenewableBurn cleanlyNo pollution
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Hydrogen- Disadvantages Takes more energy to burn the hydrogen than it will produce when its burned; inefficient
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Hydrogen- Miscellaneous Possible new method to possibly fuel cars