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Teaching Modern Physics - QuarkNet - Fermilab

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Standard Model Review – Answer Key<br />

1. Fill in the boxes with the correct terms.<br />

Baryons<br />

Hadrons<br />

2. List the four fundamental forces with the strongest on top down to the weakest. Then list the<br />

force carrier particles for each.<br />

Force Force Carrier Particles<br />

a) Strong Gluon<br />

b) Electromagnetic Photon<br />

c) Weak W & Z bosons<br />

d) Gravitational Graviton<br />

3. List the six quarks (not antiquarks) and the six leptons (not antileptons).<br />

Quarks Leptons<br />

Up Electron<br />

Down e - neutrino<br />

Charm Muon<br />

Strange µ neutrino<br />

Top Tau<br />

Bottom τ neutrino<br />

4. Which type of particle has three quarks? Baryons<br />

5. Which type of particle has two quarks (1 quark & 1 antiquark)?Mesons<br />

6. Who discovered the electron? J. J. Thompson<br />

7. What is the difference between hadrons and leptons? Hadrons participate in all four<br />

force interactions and leptons<br />

do not participate in the strong<br />

force.<br />

168<br />

Matter<br />

Mesons<br />

Leptons

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