Subatomic Physics 1

15 Points Per Correct Answer - No time limit  

1. Baryons consist of three quarks. Which three make up the proton? down, down, up up, up, down up, down, top up, up, up

2. One way to study cosmic rays is to use a cloud chamber. Who originally devised this piece of apparatus in 1911? J. J. Thomson C. T. R. Wilson Ernest Rutherford John Cockroft

3. Which of these particles experiences the strong force? Electron Neutrino Muon Pion

4. The neutrino associated with the decay of a neutron was postulated in 1931 by which famous physicist? Answer: (Just the surname will suffice.)

5. In 1935 Yukawa predicted the existence of the pi-meson. In which year was it finally discovered? Answer: (I'll give you a clue - 19__)

6. The Eightfold Way categorises which groups of particles? Hadrons and Neutrinos Baryons and Leptons Leptons and Neutrinos Mesons and Baryons

7. Which physicist sucessfully predicted the existence AND the mass of the 'omega-minus' particle, using his theories on The Eightfold Way? Murray Gell-Mann C. D. Anderson Yuval Ne'eman Enrico Fermi

8. The 'omega-minus' consists of three strange quarks. What is its strangeness? -3 -1 +1 +3

9. True or False? In a baryon, three strange quarks cannot simultaneously occupy the lowest energy state. Answer: (True or False)

10. True or False? In the theory of quark colour, a red quark will attract an 'anti-red' antiquark. Answer: (True or False)