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13 Cards in this Set

  • Front
  • Back
Ionizing Radiation
Enough energy to knock electrons from atoms forming ions, capable of causing cancer (ex. gamma, X Rays, UV)
High Quality Energy
organized and concentrated, can perform useful work (ex. fossil fuel and nuclear energy)
Low Quality Energy
disorganized, dispersed (heat in the ocean or air wind, solar)
First Law of Thermodynamics
Energy is neither created nor destroyed, but ay be converted from one form to another
Second Law of Thermodynamics
When energy is changed from one form to another, some useful energy is always degraded into lower quality energy (usually heat)
Natural radioactive decay
Unstable radioisotopes decay releasing gamma rays, alpha & beta particles
Half life
The ttime it takes for 1/2 the mass fo a radioisotope to decay
Estimate of how long radioactive isotope must be stored until it decays to a safe level?
10 half lives approximately
Nuclear Fission
nuclei of isotopes split apart when struck by neutrons
Nuclear Fusion
2 isotopes of light elements (H) forced together at high temperatures till they fuse to form a heavier nucleus, Helium (He). Expensive break even point not reached yet. Tempterature needs to be about 100 million degrees.
a rock that contains a large enough concentration of a mineral making it profitable to mines
MIneral Reserve
Identified deposits currently profitable to extract
Best solution to Energy shortage
conservation and increase efficiency