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