Nuclear Bombs Note 5/_/03. What is a nuclear bomb Fission bombs – Alamargordo & Nagasaki Hydrogen bombs – fission-fusion-fission bombs\

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Presentation transcript:

Nuclear Bombs Note 5/_/03

What is a nuclear bomb Fission bombs – Alamargordo & Nagasaki Hydrogen bombs – fission-fusion-fission bombs\

Effects of nuclear bomb Three forms of energy released –Blast –Heat –Radiation

Nuclear Blast Wall of compressed air Moves about 12 miles/hour (about the speed of sound) Hundreds of times that of atmospheric pressure Creates “enormously high winds” ( mph)

Nuclear Heat Central region hottest – fireball Millions of degrees Releases thermal radiation Travels at the speed of light Heat is felt before blast (just like lightning is followed by thunder)

Nuclear Radiation Many types of electromagnetic radiations –Light (stuff we see) –X-rays –Ultraviolet light –Infrared light –Gamma rays

The mushroom cloud Hot air moves upwards Drags particles with it Radioactive material stick to particles Radioactive particles cool and fall back to earth – which ever way the wind is blowing…

Hiroshima Damage 12.5 kiloton TNT.1 sec, 15 meter radius fireball, 300,000 C Atomic cloud 17,000 m tall Within 1 km radius of ground zero = death from thermal burns Within 3.5 km substantial burns Within 500 m fatal radiation, within 3-5 km lasting radiation effects Winds up to 440m/s (houses collapsed, building ceilings… 140,000 died

Nuclear Blast Damage

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