nuclear fission and fusion. warm - up what do you know, or think you know, about nuclear fission and...
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Nuclear Fission and Fusion Slide 2 Warm - Up What do you know, or think you know, about nuclear fission and fusion? Slide 3 Objectives Today I will be able to: Distinguish between different types of radiation with respect to their penetration power. Complete a Venn Diagram to compare and contrast nuclear fission and fusion. Review atom concepts to prepare for an exam Slide 4 Homework Study for the Atom Exam on Monday/ Tuesday of Next Week Keep working on data collection for STEM fair Slide 5 Agenda Warm up Collect STEM introductions Review Gamma, Positron and Electron Capture Radioactivity Equation Practice Nuclear Chemistry Notes Fission vs. Fusion Venn Diagram Atom Exam Review Exit Ticket Slide 6 RadiationComposition & Symbol Is shielded or stopped by? Alpha Beta Gamma Slide 7 RadiationComposition & Symbol Is shielded or stopped by? Alpha2 p+ and 2 n 0 BetaStream of high speed e- GammaVery high energy electromagnetic radiation Slide 8 Shielding Radiation, aluminum Slide 9 RadiationComposition & Symbol Is shielded or stopped by? Alpha2 p+ and 2 n 0 paper BetaStream of high speed e- Clothing, wood GammaVery high energy electromagnetic radiation Concrete, lead Slide 10 Nuclear Fission A heavy nucleus splits into more stable nuclei of intermediate mass. Slide 11 Atomic Bombs Atomic bombs are an example of Fission Reactions. Little boy and Fat man were Atomic bombs made from fission reactions with uranium and plutonium respectively. A fission chain reaction is started and continues until the bomb destroys itself. Slide 12 Little Boy and Fat Man Slide 13 Nuclear Power Plants map: Nuclear Energy Institute Slide 14 Nuclear Power Plants Uranium-235 undergoes nuclear fission and releases thermal (heat) energy. This turns water to steam which spins turbines. The turbines produce electrical energy. Nuclear waste is fuel rods with unreacted uranium and radioactive products of fission. Right now this waste is buried in waste management facilities, like Yucca Mountain. Slide 15 Maryland Nuclear Power Plant Calvert Cliffs is Marylands nuclear power plant Slide 16 http://www.cleanenergyinsight.org/wp-content/uploads/2010/03/yuccamountain.jpg Slide 17 Nuclear Fusion Low-mass nuclei combine to form a heavier, more stable nucleus. Slide 18 Hydrogen Bombs Hydrogen bombs are an example of nuclear fusion. Two isotopes of hydrogen, 2 H and 3 H, fuse together and produce a lot of energy in the process. H-bombs release significantly more energy than atomic bombs. Slide 19 The Sun: Nuclear Fusion Sun + + Four hydrogen nuclei (protons) Two beta particles (electrons) One helium nucleus + Energy Slide 20 Nuclear FissionNuclear Fusion Slide 21 Nuclear FissionNuclear Fusion A heavy atom splits into two or more lighter nuclei Ex: Atomic Bombs & Nuclear reactors High temp and pressure are used to combine light atoms to make heavier atoms Ex: Fuels the sun and stars & Hydrogen Bombs Release huge amounts of energy Produce nuclear waste Slide 22 Comparing Fission and Fusion http://media-1.web.britannica.com/eb-media/03/72203-035-4D92BDBC.jpg Slide 23 Did You Know ? http://www.ambrosevideo.com/resources/documents/89.jpg Slide 24 The Next Slide The next slide shows a great flow diagram that links a lot of radioactive decay concepts. Slide 25 http://images4.wikia.nocookie.net/__cb20060611033960/schools/images/0/0b/Chart.JPG Slide 26 Exit Ticket