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Katlyn walsh nice slide with lego for quarks

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Dr Robert Craig PhD
Dr Robert Craig PhD

Down and strange quarks have the same charge but different masses, with strange being like an older sibling to down. There are three generations of quarks: up and down, charm and strange, and top and bottom. This same pattern is seen in leptons, which are the second type of fundamental particle. Hadrons are particles made of quarks. The most common hadrons are protons and neutrons, which are made of up and down quarks. Students are asked to determine that a proton contains two up quarks and one down quark to give it a net charge of +1, while the neutron contains two down quarks and one up quark to give it a net charge of 0.

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際際滷 1:Title.Intoroduce the session,andyourselfif necessary. 際際滷 2:Quarks. Explainthe conceptof quarksas the smallestthingwe have found.The conceptof fundamental particlesasindivisible.Matterandantimatter.Askwhattheynotice aboutdownand strange (theyhave the same charge explainthatitismass thatmakesthemdifferent).
際際滷 3:Generations. Downand strange have the same charge but differentmasses strange islike anoldersiblingof down. Discussthe otherthree quarks(charm,bottomand top) these are not normallyexaminable,butthey followthe same patternasup anddown:we have three generations.Thispatternisrepeatedinthe leptonfamily.Discussleptonsasthe secondtype of fundamental particle.
際際滷 4:Particle Types.Explainthata hadronisa particle made outof quarks.Quarks dontlike tobe on theirown(we will findoutwhylater),sotendtosticktogether.The mostcommonhadronsare protons and neutrons,made of upand downquarks.Askthe studentstotry to work outhow to make a proton, whichhas a charge of +1. If necessary,give themthe hintthatthere are three quarksina proton.(They needtowork outthe combinationof three chargeswhichaddsto1). Do the same for neutrons,once theyhave workedthisout

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Katlyn walsh nice slide with lego for quarks

  • 1. 際際滷 1:Title.Intoroduce the session,andyourselfif necessary. 際際滷 2:Quarks. Explainthe conceptof quarksas the smallestthingwe have found.The conceptof fundamental particlesasindivisible.Matterandantimatter.Askwhattheynotice aboutdownand strange (theyhave the same charge explainthatitismass thatmakesthemdifferent).
  • 2. 際際滷 3:Generations. Downand strange have the same charge but differentmasses strange islike anoldersiblingof down. Discussthe otherthree quarks(charm,bottomand top) these are not normallyexaminable,butthey followthe same patternasup anddown:we have three generations.Thispatternisrepeatedinthe leptonfamily.Discussleptonsasthe secondtype of fundamental particle.
  • 3. 際際滷 4:Particle Types.Explainthata hadronisa particle made outof quarks.Quarks dontlike tobe on theirown(we will findoutwhylater),sotendtosticktogether.The mostcommonhadronsare protons and neutrons,made of upand downquarks.Askthe studentstotry to work outhow to make a proton, whichhas a charge of +1. If necessary,give themthe hintthatthere are three quarksina proton.(They needtowork outthe combinationof three chargeswhichaddsto1). Do the same for neutrons,once theyhave workedthisout