Recent reports discussing the population bomb Indicate that the explosion is slowing a one kiloton nuclear weapon exploded at ground level would destroy about 1 square kilometer of a city For an atomic bomb the number of doublings required is closest to 1 2 3 80 4 An implosion type bomb is required for A PU 239 bomb 5 Moore s law relates to computer chip cabability 6 illness from anthrax 7 Which of the following does not represent exponential growth The statement that the Chernobyl accident will kill 24 000 people is based on The dangerous radioactivity in fallout comes from The linear hypothesis 8 A moderator is something that Slows neutrons 9 fission fragments 10 Fallout is much worse if the bomb Is exploded near the ground 11 A nuclear reactor cannot explode like a nuclear bomb because The nuclear reactor depends on slow neutrons 12 According to the text the least bad place to put nuclear waste is A breeder reactor is designed to produce Underground 13 plutonium 14 The number of nuclear weapons that the United States had was closest to Ten thousand 15 All of the above PCR has been used to choose all that are appropriate identify children of Thomas Jefferson check the guilt of convicted murders identify victims of 9 11 identify the fathers of children 16 The Hiroshima bomb used a gun design 17 If the water moderator is lost from a nuclear reactor Radiation from fission fragments will continue to produce heat 18 The material that might be reprocessed from nuclear waste is Which of the following is not a good example of te doubling law PU 239 19 Future population growth 20 The Canadian candu reactors use Deuterium 21 Plutonium can explode with fewer generations than can uranium because plutonium fission releases more neutrons 22 In a nuclear power plant the material that runs through the turbine is The number of deaths from the Nagasaki bomb is estimated to be The smallest container that could contain one critical mass of plutonium is The bomb dropped on Hiroshima used as its fuel Saddam Hussein planned to enrich uranium using steam 23 50 000 150 000 24 a coffee mug 25 uranium 26 Calutrons 27 One of the most dangerous radioactive materials from fallout is A centrifuge enrichment plant takes an area of about one large classroom 28 PCR involves DNA 29 Sr 90 30 The term China syndrome refers to Meltdown of nuclear fuel 31 Depleted uranium is a useful substance because an artillery shell made form it is very penetrating 32 PCR was used to learn about The Desendants of Sally Hemmings 33 Another name for the H bomb is a thermonuclear bomb 34 A nuclear explosion similar to the one produced by North Korea would destroy an area of about The size of a college campus 35 Cold fusion has been seen in labratory experiments 36 At Three Mile Island choose all that are correct some of the uranium fuel melted 37 What distinguishes a breeder reactor from other reactors is that it makes more fuel than it uses 38 Jupiter is not a star because It isn t massive enough 39 Current is measured by amps 40 a volt is a measure of energy per electron In a permanent magnet the magnetism comes from 41 Magnetism comes from Moving electric charge 42 the spin of the electrons 43 Magnetic monopoles have never been found 44 Rail guns push the projectile using Magnetic fields 45 Tesla wanted to use a transformer to distribute electricity because It decreased the current going through long wires to redue the loss of electricity 46 You can demagnetize a natural magnet by heating it above the Curie point 47 what discovery now allows for headphones to be small light rare earth magnets such as SAMARIUM COBALT 48 Which of the following use or consist of permanent magnets choose all that apply Theoretically the Earth should not have a permanent magnet in its core because transformers 49 its interior is too hot 50 The Earth s magnetisim comes from iron in its crust 51 Twice every million years 52 The north geographic pole of the Earth is a south magnetic pole 53 Compasses point north because The earth flips magnetism on average approximately There are electric currents in the iron core of the earth 54 Electricity will heat a wire more if it has high current 55 Static electricity occurs when two surfaces rub against each other and electrons flow from one to the other 56 Europe uses higher voltage in homes because it Creates less heat in home wiring 57 Lights and TVs in Europe tend to flicker because Europe uses 50 hertz the US uses 60 hertz 58 When an object loses some electrons it Has a positive charge 59 To get a spark you normally need High voltage 60 A fuse is used in a house to prevent House wires from overheating 61 The earths magnetic flips are used for Geologic dating 62 The aspect of electricity that would make it most dangerous is high A certain kind of generator uses its own electricity to strengthen its magnetic field Such a generator is called a in a metal electrons can move freely 63 Voltage 64 Dynamo 65 liquid helium 66 The original superconductors were cooled with High temperature superconductors operate at approximately Room temperature superconductors Have no practical applications 67 123 C liquid nitrogen temperature 68 We use AC instead of DC because AC can use transformers 69 Topsy was executed with AC to show the danger of high Voltage 70 Edison wanted A power plant on every city block 71 Edison wanted A power plant on every city block 72 The current through a flashlight bulb is about one amp 73 A stereo speaker produces sound by the force of a magnetic field on an electric charge 74 the light from an ordinary lightbulb comes from the fact that the wire is heated by electricity 75 A Tesla coil is a kind of transformer 76 Submarines can be detected by their Magnetism 77 At the Curie temperature magnetism disappers 78 Most electric power is generated by a wire moving through an magnetic field 79 transformer 80 very high voltage 81 an example of a transformer is a Tesla coil 82 stronger magnets 83 What invention made it possible to change low voltage AC to high voltage AC To reduce power losses from resistance electric power lines use better motors and earphones have recently been made possible by Beats measure the difference between two frequencies 84 Waves tend to bend to the side with slower wave velocity 85 fastest earthquake wave the slowest earthquake wave is the p wave 86 s wave 87 2 88 spread more larger wavelength 89 The fastest sound wave is An octave refers to two frequencies that differ by a
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