AP Environmental Science Unit 6
Multiple Choice
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11 Terms
Renewable energy sources
Can be replenished naturally, at or near rate of consumption
Non-renewable energy sources
Exist in fixed amounts on earth and can’t easily be replaced or regenerated
Which type of country uses the most energy?
Developed nations
What is the most used energy source?
Fossil fuels
Subsistence fuels
Biomass fuel sources that are easily accessible, often used in developing countries
Coal formation
Pressure from overlying rock and sediment layers compacts peat into coal over time
Natural gas
Natural gas is mostly methane and is found on top of trapped oil deposits
Fracking
Hydraulic fracturing is a method of natural gas extraction that has extended to natural gas
Tar
Petrol can be extracted from tar sands
Fossil fuel combustion
Reaction between oxygen and fossil fuels that releases energy as heat and produces CO2 and H2O as products
Petroleum extraction
Extracted by drilling a well through the overlying rock layers to reach the underground deposit and then pumping liquid oil out under pressure
