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QUESTION 9 Select the list containing the six types of quarks. (A) 1n out up down top and bottom (B) right left charm strange in and out (C) up down charm strange top and bottom (D) charm strange right left top and bottom
QUESTION 10 The force that quarks experience that leptons do not is the (A) weak force. (B) strong force. (C) normal force. (D) electromagnetic force.
QUESTION 14 Select the list that contains only gauge bosons. (A) gluon photon meson and hadron (B) lepton baryon meson and hadron (C) gluon photon Z boson and W boson (D) Z boson W boson photon and lepton
QUESTION 22 (1 mark) List the six types of leptons. 1. 2 3.
QUESTION 1 Leptons do not experience the (A) weak force. (B) strong force. (C) gravitational force. (D) electromagnetic force.
QUESTION 5 Mesons are (A) subatomic particles composed of one quark and one antiquark. (B) elementary particles that are classified as leptons. (C) elementary particles exchanged between quarks. (D) subatomic particles composed of three quarks.
QUESTION 15 Which Feynman diagram shows an electron interacting with another electron? (A) (B) Space Space Time Time © (D) Space Space Time Time
QUESTION 2 (1 mark) List the four gauge bosons in the Standard Model. 1. 2 3. 4
QUESTION 5 Tau particles are classified as (A) bosons. (B) leptons. (C) mesons. (D) baryons.
QUESTION 14 Which Feynman diagram correctly depicts neutron decay? (A) Space (B) Space (©) Space (D) Space Time
QUESTION 20 Which option lists the gauge bosons in ascending order of the strength of force they mediate? (A) W boson < Z boson < Photon (B) Gluon < Z boson < W boson (C) Photon < W boson < Gluon (D) Z boson < Photon < Gluon
QUESTION 26 (1 mark) Carbon-14 undergoes nuclear decay to nitrogen-14. 1§C 1?N+e_ + 7 List the two types of particles whose total number must be conserved in this reaction.
QUESTION 2 (2 marks) Contrast the properties of up quarks and tau particles.
QUESTION 5 (3 marks) The Feynman diagram for a particle interaction is shown. Space Time Describe the particle interaction taking place.
QUESTION 1 The correct definition of lepton number is (A) the total number of leptons in a particle interaction. (B) a conserved quantum number defined by L = n; ny. (C) the number of leptons remaining after a particle interaction. (D) astrictly conserved additive quantum number of a system defined by B = é (ng ng).
QUESTION 12 Which two gauge bosons mediate the weak nuclear forces? (A) gluon and photon (B) gluon and Z boson (C) photon and Z boson (D) W boson and Z boson
QUESTION 14 The correct definition of the term antiparticle is (A) aparticle with a known substructure. (B) aparticle with no known substructure. (C) anparticle with the same mass and opposite charge and/or spin as a corresponding particle. (D) aparticle with a different mass and the same charge and/or spin as a corresponding particle.
QUESTION 17 The Feynman diagram below represents an interaction of particles. Space Time Select which particle interaction is represented by the diagram above. (A) aneutron decaying into a proton (B) aproton decaying into a neutron (C) an electron and electron interaction (D) an electron and positron interaction
QUESTION 18 Select the list that only contains quarks. (A) (B) ©) (D) down charm top and strange muon up down and neutrino meson gluon photon and boson anti-up anti-neutrino charm and strange
QUESTION 21 (1 mark) Define the term baryon.
QUESTION 24 (3 marks) Explain one possible interaction between an electron and a positron. Clearly label the Feynman diagram below to support your answer. Space Time Note: If you make a mistake in the diagram cancel it by ruling a single diagonal line through your work and use the additional diagram on page 10 of this question and response book.
QUESTION 7 An electron and positron can annihilate into a photon producing another electron and positron pair in the process. An outcome of this interaction is that (A) total mass decreases. (B) fewer baryons will be produced. (C) the lepton number does not change. (D) the number of particles will decrease.
QUESTION 12 What is a consequence of symmetry in particle interactions? (A) (B) (C) (D) The law of conservation of momentum is obeyed. Charges on particles will always be different. Antiparticles travel backwards through time. Total mass of the particles will decrease.
QUESTION 14 An electron is best described as a (A) lepton with a larger mass than a positron. (B) baryon with a smaller mass than a proton. (C) meson that experiences the strong nuclear force. (D) particle whose interactions can be mediated by photons.
QUESTION 23 (1 mark) List the forces that can be experienced by leptons.
QUESTION 28 (2 marks) The Feynman diagram for a neutron decaying into a proton and electron is shown. Space Time Describe the significance of the electron antineutrino in this particle interaction.
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