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Radioactivity Poster

Radioactivity Poster

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Radioactivity Poster

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  1. Radioactivity Poster

  2. Half Life Radioactivity Half-Life is the # of years it takes for half of an unstable atom decay into another atom The emission of high energy particles or waves from unstable atoms It takes 4.5 billion years for half of uranium to change to another element. So its HALF-LIFE= 4.5 billion years The emissions occurs when the nucleus falls apart during RADIOACTIVE DECAY Half Life of the M&M M&M with the M up(Eminemium)= Parent Isotope M&M with the Mdown(Noeminemium)= Daughter Isotope The Half-life of Eminemium is 5 years Example Its hot to the touch Uranium-238 goes through 14 radioactive changes to get to Lead-206 How many protons and neutrons did it lose? 10 p+ and 32 N

  3. Nuclear Fusion Half-Life Graph Eminemium= Color 1 Noeminemium= Color2 Hydrogen atoms fuse to form helium. Energy is given off when this occurs. 100% H-1 H-2 75% Collision 50% 25% He- 4 Energy is given off 1 2 3 4 5 Nuclear Fission 1. A NEUTRON is shot at a large unstable atom like uranium 4. Extra Neutrons fly off to hit other atoms causing a CHAIN REACTION Using a neutron to split a very large unstable atom. 2. Atom gains Neutron and becomes more unstable Used in nuclear powerplants to make lots of heat, steam, and electricity 3. Atom splits into TWO DAUGHTER ATOMS and 3 NEUTRONS

  4. Energy Unit Blingo • Kinetic Energy • Potential Energy • Bottom of hill • Top of hill • mgh • ½ mv^2 • Protons • Neutrons • Electrons • Nucleus • Outside of atom • Isotope • Ion • Positive charge • Negative charge • Static electricity • Law of conservation of energy • Element • Atom • Atomic number • Mass number • Betadecay • Alpha particle • Nuclear fusion • Nuclear fission • Half-life • Attract • Repel • Height • velocity

  5. WarmUp (11-16-12) • Describe: Alpha decay: Beta decay:

  6. WarmUp 11/19/12 • How much of a uranium sample is left after two half lives? • 25% is left after two half lives • http://phet.colorado.edu/en/simulation/radioactive-dating-game