Discovery of the particle Zoo and the Standard model of the Atom 2020 Name: **EXPHd terrtboxes before printing iyou ore bonding in bond written work\" Key resources {see DEL content for links]: Perimeter Institute "Beyond the Atom" Pearson chapter 1'? Cassiopeia Project "Standard model" The particle adventure website '0'\" This assignment has 4 parts that 1will be completed over multiple classes: * 1iv'icleo summary how our models need to change over time * Discovery and detection of the vast array of particles * The standard model provides an explanation and structure to the observation witnessed * The development of models of the structure of matter is ongoing. Part 1: Making discoveries result in remodeling Learning outcome: D4-lsts: explain that concepts. models and theories are often used in interpreting and explaining observations and in predicting future observations Dal-Ins: explain that scientific knowledge is subject to change as new evidence becomes apparent and as laws and theories are tested and subsequently revised, reinforced or rejected Watch Perimeter Institute of Theoretical Physics' W and Complete the Perimeter Institute Activity 1. worksheet: WWII}: Beyond the dram: remodeling particle physics (Perimeter lnstit'ute of Theoretical Physics] FILE. Reproduced with permission. 01. The model of the atom has changed over the past 150 1pears as new evidence has been found. Draw labelled diagrams for a helium atom using each of these models. Dalton's model of indivisilale Thomson's model using Rutherford's model using halls of matter electrons in a positive mass electrons and nuclei 02. Rutherford red alpha particles at gold foil and was surprised by the results. He developed the nuclear model of tlte atom because {all most of the alpha particles went through. {b} most of the alpha particles bounced back. {c} a few of the alpha particles went through. {d} a few of the alpha particles bounced back. DE. The Large Hadron Collider {LHCJ accelerates particles to unprecedented energy:I levels. Higher-eneer particles are used at the LHC because theyI can {a} get closer to each other and probe smaller distances. {b} create massive particles from the energy. to} both of the above. Dd. The most famous physics eg uation is Einstein's E = mcz. {all Explain what each letter in the equation represents. and what the equation means. {b} Draw a picture of what happens when an electron and a positron are created In a bubble chamber. Where does the mass of the electron and positron come from? Answer: DE. Science was much simpler ElL'I years ago. Everything appeared to be made of iust electron. protons. and neutrons. Then physicists probed deeper imp matter and detected net.I particles. {a} lath}.r was the discovery of new partides a problem? {b} How was it solved? Answer: 0?. The Standard Model describes what is needed to make matter and the forces that hold it together. {a} Fill in the table for the Standard Model. 2nd 'rd Generation Generation Generation {b} What is special about the first column? {c} How are the next two oolum ns different from the first? {d} How is the last column different from the other three? Answer: El-EISEII'iE Leptonrs DB. 1it"il'hat particle in the Stande Model is the LHC designed to nd? Why is it important? Answer: