Science Test
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Electromagnetic force | makes protons repel each other
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| Strong Nuclear force | holds the protons and neutrons together
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| Half Life | the time it takes for half the nuclei of a radioactive element to decay
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| Particle Accelerator | equipment that speeds up subatomic particles
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| Alpha Particle | helium nucleus
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| Hahn-Strassman | attempted to create larger atoms by bombarding uranium nuclei with neutrons
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| Einstein | E=MC^2, his contribution to nuclear physics
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| Gamma Rays | dangerous cancer causing, cell decay radiation
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| Fission | larger nuclei split into smaller nuclei
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| Fusion | smaller nuclei join to become larger nuclei
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| Tracers | radioactive isotopes that are tracked as they move through biological systems
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| transmutation | changing an atom of one element into an atom of another element
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| Fat man/little boy | names given to first two nuclear weapons dropped in warfare
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| Lize Meitner | helped to explain Barium being made by Uranium bombarded by neutrons
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| deuterium | hydrogen atom with 1 neutron
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| Last element on the chart with a stable nucleus. | #82 lead
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| order the forces from strongest to weakest. | strong nuclear force, electromagnetic force, gravity
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| name the particles which make up an alpha particle. | 2 neutrons and 2 protons
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| Carbon-14 is an unstable isotope of Carbon. Which of the following is true of Carbon-14? | It will transmute to become stable, It contains 8 neutrons, It is radioactive
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| Two factors affect the stability of a nucleus to determine if it will be stable or not. Which answer has the correct two? | size of the nucleus; proton-neutron ratio in the nucleus
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| Which of the following interactions would NOT be affected by the strong nuclear force? | electron and electron
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| Because our sun has several different isotopes of the element -------, there are several possible fusion reactions in the sun. | hydrogen
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| One way to control fission chain reactions is to use materials that absorb ------. | neutrons
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| Gold-198 has a half-life of 64.8 days. If you had 4 grams of Gold-196, about how much would you have left after 65 days? | 2 grams
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| the source of the suns energy is -----. | nuclear fusion
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| Fission and Fusion both ------. | release energy
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| Two cities that the U.S. Bombed with nuclear weapons at the end of WWII. | Hiroshima and Nagasaki
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| When a nucleus changes by converting a neutron into a proton and an electron and then it shoots out the electron it is called ------. | beta decay
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| the half-life of Polonium-210 is 140 days. If you start with 200 grams of Polonium-210 and you leave it for 420 days, how much do you have left? | 25 grams
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| When scientist purposely cause changes in the nucleus of an atom this is called -----. | artificial transmutation
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| Name a particle that can be shot into a nucleus to cause transmutation | alpha particle, proton, neutron
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| Any element above this number is a synthetic (man made) element. | 92
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| which radioactive element has been found to be useful in small quantities in smoke detectors? | americium
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| Which of the following is NOT associated with particle accelerators? | super heated magnets
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| A Uranium-235 nucleus splits into a barium-141 nucleus and a ----- -92 nucleus. | krypton
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| Which radioactive element was used to create the green jelly stuff in the movie "The Manhattan Project"? | plutonium
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| Uranium-238 has a half life of 4.5 X 10^9 years. Which of the following is NOT true of this radioactive isotope? | it could be used to diagnose medical problems
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| what tipped off Paul from the movie that the Medatomic Corp. was dealing with radioactive material? | he found a bunch of 5 leaf clovers
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| more energy is released in a ------ reaction. | fusion
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| the worst nuclear power plant accident in history took place in -------. | Chernobyl, Russia
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| In nuclear fusion three isotopes of element #1 are involved. Which of the following are those three? | deuterium, tritium, hydrogen
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| What is currently done with high-level, high risk radioactive waste? | buried deep underground
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| How did Paul from the movie confuse the computer systems motion detectors when he broke in? | used two Frisbees, one down each aisle
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| Water is used in two ways in a nuclear power plant. Which are the correct two? | boil and condense to drive turbines/cooling of the reaction hot temps.
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