Envi Sci #4

Mountaintop removing mining occurs in…

West Virginia

Is coal stationary or mobile energy

stationary

Use of coal energy has declined since…

2007

Where are the largest coal deposits in the world

United States

How long ago was coal formed

~300 million years ago

Does surface mining or subsurface mining cause more damage to the ecosystem

surface mining

Carbon Capture and Sequestration

pulling CO2 out of smoke and burying it underground

Surface Mine Reclamation

the area is restored to a less damaged state, but not all damage is repaired

Where is Bakken Oil Field located

North Dakota

How is most conventional oil/gas extracted?

drilling

Tight Oil

oil is locked up in impermeable shale rock deposits

Fracking

water and chemicals are injected into cracks created by explosive charges

Energy Security

having access to reliable and affordable energy sources

Where did Deep Water Horizon occur

Gulf of Mexico

Elements can be determined by the number of protons

true

Isotopes

variants of an element depending on the number of neutrons

Percentage of U-235 for fuel grade uranium

~4%

Nuclear Fission

when a uranium atom is split, it release neutrons to split other atoms

Alpha Radiation

can be stopped by a piece of paper, but should not be ingested

Low level radioactive waste is stored

in specially built landfills

Fukushima accident was caused by

tsunami taking out backup generators

What is the national long term site for high level radiation

Yucca Mountain

Nuclear produces less pollutants than coal

true