Presentation on theme: "Energy Resources and Fossil Fuels"— Presentation transcript:
1Energy Resources and Fossil Fuels Nonrenewable EnergyEnergy Resources and Fossil Fuels
2Fuels for Different Purposes Fossil fuels- Remains of ancient organisms that changed into coal, oil, or natural gas.Four main purposes:TransportationManufacturingHeating and coolingGenerating electricityTwo main problems:Limited supplyEnvironmental consequences
3Electricity- Power on Demand ConvenientTransports quickly across great distancesDisadvantages:Difficult to storeMust generate from other energy sourcesElectric generator- Converts mechanical energy (motion) into electrical energy.Turbine- Wheel that changes the force of a moving gas or liquid into energy that can do the work.
5Energy UseDramatic differences in fuel use and efficiency throughout the worldU.S. uses more energy per person than any other countries in the world except Canada and the United Arab Emirates.
6Energy Use #1 use in United States- Industrial use #2 use in U.S.-TransportationJapan and Switzerland-Extensive rail systemsHydroelectric and nuclear power
7Energy-rich molecules in porous rock formations Fossil Fuel DepositsOil and Natural Gas Formation-Decay of tiny marine organisms causes heatSediment cover causes pressureEnergy-rich molecules in porous rock formationsCoal Formation-Decay of swamp plantsOceans rose and covered with sedimentHeat and pressure caused coal to form
10Coal Most of world’s fossil fuel reserves Asia and North America- rich in coalDisadvantages:Top-mining coal damages surfaceToxic wasteAir pollution- Sulfur dioxide produces acid rainAdvantages:Relatively inexpensiveNeeds little refining after it’s mined
12Petroleum Pumped from the ground, a.k.a. crude oil. Petroleum products- anything made from crude oil45% of world’s commercial energy useTrapped in folds, faults, and salt domes which; bound by impermeable layers of rock
13Environmental Effects Oil spillsLeaking vehiclesRelease of pollutants when burnedCarbon dioxide- Global warmingSulfur dioxide- Acid rainSmog
14Natural Gas 20 % of world’s nonrenewable energy Methane, CH4 Fewer pollutants when burnedCan be used to generate electricity
15Fossil Fuels and the Future 90 % of energy used in developed countriesDemand to double by 2050Costs will likely increaseOil reserves- Oil deposits that can be extracted profitably at current prices using current technology.Cost of obtaining influences extractionMore under oceanDifficult to drillExpensive