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20 Cards in this Set

  • Front
  • Back

Law of conservation of energy

Energy can not be created or destroyed.

Carboniferous period

When most fossil fuels formed

Biogenic formation of fossil fuels.

Dirtiest of all fossil fuels

Coal

Centrifuge

Used to enrich uranium

Pros of nuclear power

- no greenhouse gas


-no air pollution


-no us nuclear accident since 1970


- technology makes it safer

Major nuclear accidents

-three mile island


-chernobyl


-fukishima

Health effects of radiation

- death


- radiation sickness


- high levels of cancer


- genetic mutations and birth defects


- cancer in future generations


- environmental contamination

Half life

Time elapsed until half of the radioactive material has decayed and is no longer radioactive.

Hazardous life

10-20 half lives

Short term storage of nuclear waste

Spent fuel rods are stored in water tanks at nuclear power plant.

Long term storage of nuclear waste

Deep underground away from ground water and in a geologically stable sealed in containers.

Nimby

Not in my back yard.

Ordinary chemical reactions

Identity of atom does not change

Nuclear reaction

Identity of atom does change.

Fusion

Merging two nuclei together to form a larger atom. This powers our sun.

Fission

A large atom splits to form a smaller one releasing energy in the process. Nuclear power plants use this.

Radiation

Energy that comes from a source and travels through space and may be able to penetrate certain materials. Light and microwave.

Radon

Is naturally occurring seeps into basements is very common in pa and increases chance of lung cancer as much as smoking.

EROEI

Energy returned on energy invested.