Flashcards
Environmental Problems
Cards in this deck (23)
- 1What is acid mine drainage?Newly exposed rock+oxygen+water=sulfuric acid
Leaches metals and pollutes water - 2Subsurface mininggets major ores and coal
causes acid mine drainage - 3Open pit miningBig cone shaped holes
leads to acid mine drainage - 4Quarriessmall open pit mines
- 5Placer miningAlluvial
Steam beds and shallow pits
labor intensive and low paying - 6Mountain top removalRemove and sell timber, blast top, then fill valley below
- 7Negative effects of mountain blastClog waterways, devalue homes, cause soil erosion leading to mud slides
- 8Positive effects of mountain top removaleconomically efficient leading to cheaper electricity
- 9Pro drilling in ANWREnergy independence, job creation, and local support
- 10Anti drilling in ANWRCaribou and wilderness, indigenous population, CAFE standards.
- 11Types of renewable energywind, solar, geothermal
- 12Nonrenewable energy89% of energy in US
fossil fuels and uranium ore - 13Fossil fuelscoal, petroleum, natural gas
- 14Uranium oresnuclear power
- 15EROIEnergy return on investment
Ratio of energy output per energy input - 16Natural gasburns 50% cleaner than petroleum or coal
Accessing it can be the controversial part - 17CoalMost abundant, but also the dirtiest
US, China and Russia all coal rich - 18Petroleum37% of consumption
greenhouse gases, smog, oil spills - 19Hubberts peakKing Hubbert predicted that US oil production would peak in the 1970s
- 20Oil sandsSand/clay deposits with 20% bituman
high carbon content
strip mined in Venezuela and Northern Alberta
much lower EROI then petro. 3:1 - 21Oil ShaleStrip mined
3:1 EORI - 22What do we mine for?Metal from ores, coal, gems, phosphates, sand, salt, gravel.
- 23What is strip mining?For shallow, broad deposits. Example: oil sands and coal
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- Flashcards on Environmental Problems, created by bsg2421 on 15/04/2013.
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- bsg2421
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