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11 Cards in this Set
- Front
- Back
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Critical Mass
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8 Kg minimum amount of fissable material to maintain chain reaction
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chain reaction
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fission (neutron splitting off) causes more fission
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fusion
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nuclear fusion is a nuclear reaction in which two or more atomic nuclei come very close and then collide at a very high speed and join to form a new nucleus. During this process, matter is not conserved because some of the matter of the fusing nuclei is converted to photons (energy). smaller atomic # to bigger |
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fission
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Nucleus splits into smaller parts, The fission process often produces free neutrons and gamma photons, and releases a very large amount of energy even by the energetic standards of radioactive decay. big atomic # to smaller |
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boundary
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26 Fe (iron) most stable nucleous
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Earths Age
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4.5 billion found through half life dating |
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H bomb/Hydrogen Bomb
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initial bomb compresses plutonium setting off fission reaction in turn sets off hydrogen fussion which boosts the fission
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Uranium Dating
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date inorganic material look at ratios of 238U/206Pb=with a half life of 4.47 billion years or 235U/207 Pb=half life of 710 million years |
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Carbon Dating
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radioctive decay of carbon 14 to find out when organism died. Can only be use don once living things. measure ratio of C14/C12 with half life of 5730 years ...radio carbon created in ozone by cosmic rays interactwith nitrogen , interact with oxygen, radio c o2 incorporated into plants thru photo synthesis and into animals through eating other plants and animals |
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arc light
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worlds first electric light carbon charged rods almost touch
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lime light
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hydrogen , alcohol o2
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