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Energy Quiz Prep
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What is a renewable fuel?
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One that replaces itself quickly, such as firewood and water power
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What is a non-renewabble fuel?
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One that cannot be renewed or that takes millions of years to renew
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What is an inexhaustible fuel?
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A fuel that will replace itself as quickly as we can possibly use it
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Crude Oil Is it renewable or non-renewable?
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Non-renewable
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Conventional nuclear fission
Is it renewable or non-renewable?
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Non renewable unless we make plutonium in breeder reactors
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Geothermal Energy Is it renewable or non-renewable?
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Renewable
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Solar Energy Is it renewable or non-renewable?
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Inexhaustible, so it is renewable, at least for a few billion years
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Wind Energy Is it renewable or non-renewable?
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Renewable
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Conventional Natural Gas
Is it renewable or non-renewable?
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Non-renewable
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Wind Energy Is it renewable or non-renewable?
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Renewable
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Coal Is it renewable or non-renewable?
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Non Renewable
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Biomass Is it renewable or non-renewable?
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Renewable
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Hydropower Is it renewable or non-renewable?
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Renewable
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What is the definition of a fossil fuel?
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A fuel that was once living millions of years ago
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What are the 3 fossil fuels?
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Coal Oil Natural gas
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How is coal extracted from the ground?
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Either strip mining or underground mining
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What is the environmental effect of mining coal?
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It leaves mines or pits that fill up with acidic waste water that may have to be treated forever
It leaves huge piles of loose waste rock
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Who uses the most coal?
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Power plants
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What are the environmental problems with burning coal?
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Coal gives off more carbon dioxide than any other fossil fuel
Coal contains sulfur that when burned produces acid rain Some coal contains mercury and heavy metals.
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How much coal supply do we have?
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Hundreds of years
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How are oil and gas extracted?
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Deep wells are drilled
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What is the environmental problem with drilling for oil and gas?
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Oil Spills Uses a LOT of water Weak wells require HOT water Can cause land to subside
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What is good about oil and natural gas?
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They are convenient to store and ship
Oil is readily converted into gasoline Gasoline is portable for cars
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What is the down side to using oil and N gas?
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Carbon dioxide Acid Rain Smog We need it for other purposes. We have to import a lot of it
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How much oil and N gas is available?
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Only a few decades of proven reserves exist
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Hydrogen Fuel Is it renewable or non-renewable?
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Renewable from sea water
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What is good about hydrogen?
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It is portable, and it’s only emission is water
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What is bad about Hydrogen?
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It takes more energy in the form of electricity to make it than it gives off when you use it as a fuel
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What is good about biomass?
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The net amount of carbon dioxide produced is zero
The net amount of carbon dioxide produced is zero. Co2 is used by the plant, and when it is burned, the next crop uses it all up It can be made into portable car fuel
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What is bad about biomass fuel?
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It uses land that we need for food crops
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What is good about hydropower?
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It produces a lot of electricity without polluting the air or water
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What is bad about hydropower?
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Dams harm fish reproduction
Dam lakes fill up with silt Power has to be used near the dam
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What is good about wind energy?
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Totally non polluting
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What is bad about wind power?
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You never know when the wind will blow
The best winds are often not where there are people to use the power
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How can we capture solar energy?
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Photo cells Reflectors and boilers Passive heating
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What is the problem with photocells?
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They’re still pretty expensive
They don’t work when the sun isn’t shining
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What is the problem with reflector boilers?
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They take a LOT of room They don’t work when the sun isn’t shining
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What is the problem with passive solar?
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It is fairly limited to heating
They don’t work when the sun isn’t shining
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What is good about home Geothermal Heat pump energy?
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Low temp set with a heat pump are very efficient to run
Uses stored sun’s energy Save a LOT on heating and cooling Inexpensive to install
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What is bad about geothermal?
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Low temperature sets are only good for heating.
Hot sets can only be used in a few areas because the hot rock is too deep
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What is good about Nuclear Fission
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No air or water pollution
Relatively inexpensive to run once the plant is online Can build them close to cities (or can we?X)
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What is bad about Nuclear Fission
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Waste must be stored for thousands of years
Mining for fuel pollutes Boom!
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