Presentation on theme: "Warm-up 3-25-14 What is the difference between a renewable and a non renewable resources? What is an example of a nonrenewable resource? What is an example."— Presentation transcript:
1 Warm-upWhat is the difference between a renewable and a non renewable resources?What is an example of a nonrenewable resource?What is an example of a renewable resource?
2 Oil Refined into many different energy products gasoline, diesel fuel, jet fuel, heating oilIf consumption increases and no new sources are found, oil supplies may be exhausted in another 30 years or soOver 50 percent of the world's oil is found in the Middle EastOver 70 percent of oil fields are near tectonic plate boundaries
3 Oil Pollution Limited supplies Relatively inexpensive fuel source ProsConsPollutionLimited suppliesRelatively inexpensive fuel sourceSame amount of oil creates more energy than coalBurns cleaner - 50 percent less sulfur dioxide than coal
4 Natural Gas Natural gas is a mixture of gases Mostly methane, some ethane, propane, and butaneEstimate of natural gas reserves is about 100 million metric tonsAt current usage, this supply will last an estimated 100 yearsPropane and butane are removed from the natural gas and made into liquefied petroleum gas (LPG)Most is found in Eastern Europe and the Middle East
5 Natural Gas Pollution Cleanest burning fossil fuel Limited supplies ProsConsPollutionLimited suppliesCleanest burning fossil fuelEasy and inexpensive to transport once pipelines are in place
14 What is hydroelectric power Running water moves turbinesSpinning of turbines produces electricityUsually involves building a dam on a river to control water flow
15 Advantages of hydroelectric power RenewableNo carbon dioxide emissionsNon-pollutingPowered by rivers, which flow because of gravity pulling water down hill
16 DisadvantagesDams prevent fish and other river life from swimming upstream to spawnDams trap sediment, creating erosion problems downstreamFlooding behind dams displaces people and wildlifeDams create an artificial lake in which stratifieswarm, oxygen-rich water on topcold, oxygen-poor water on bottomWater released is either too warm or does not have enough oxygen for downstream organisms
17 Exit Ticket How can solar panel farms harm the environment? Will we ever run out of oil reserves? If so, how soon.