| Date | May 2016 | Marks available | 1 | Reference code | 16M.1.SL.TZ0.27 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 0 |
| Command term | Question number | 27 | Adapted from | N/A |
Question
For which reason were quarks first introduced?
A. To explain the existence of isotopes
B. To describe nuclear emission and absorption spectra
C. To account for patterns in properties of elementary particles
D. To account for the missing energy and momentum in beta decay
Markscheme
C
Examiners report
[N/A]
Syllabus sections
Show 96 related questions
- 17N.2.SL.TZ0.2b: Distinguish between hadrons and leptons.
- 17N.1.SL.TZ0.25: The Feynman diagram shows a particle interaction involving a W– boson. Which particles are...
- 17M.2.SL.TZ1.5c: Outline one benefit of international cooperation in the construction or use of high-energy...
- 17M.2.SL.TZ1.5b.iii: Identify the exchange particle in this decay.
- 17M.2.SL.TZ1.5b.ii: Draw arrow heads on the lines representing \({\bar u}\) and d in the \({\pi ^ - }\).
- 17M.2.SL.TZ1.5a: State the quark structures of a meson and a baryon.
- 17M.1.SL.TZ2.27: The reaction p+ + n0 → p+ + \(\pi \)0 does not occur because it violates the conservation law...
- 17M.1.SL.TZ1.15: Two pulses are travelling towards each other. What is a possible pulse shape when the...
- 16N.2.SL.TZ0.4a: A particular K meson has a quark structure \({\rm{\bar u}}\)s. State the charge on this meson.
- 16M.2.HL.TZ0.8c: Quarks were hypothesized long before their existence was experimentally verified. Discuss the...
- 16M.2.HL.TZ0.8a: Show that lepton number is conserved in this decay.
- 16N.2.HL.TZ0.4b: The Feynman diagram shows the changes that occur during beta minus (β–) decay. Label the...
- 16N.2.HL.TZ0.4a: A particular K meson has a quark structure \({\rm{\bar u}}\)s. State the charge, strangeness...
- 16M.2.SL.TZ0.6c: Quarks were hypothesized long before their existence was experimentally verified. Discuss the...
- 16N.1.SL.TZ0.27: As quarks separate from each other within a hadron, the interaction between them becomes...
- 16M.1.SL.TZ0.26: Which of the following lists three fundamental forces in increasing order of strength? A....
- 15M.1.SL.TZ1.22: Geiger and Marsden bombarded a thin gold foil with alpha particles. They observed that a...
- 15M.1.HL.TZ2.26: The structure of the atom was investigated by firing alpha particles from a source at a thin...
- 15M.3.SL.TZ1.13b: Outline, with reference to the strong interaction, why hadrons are produced in the reaction.
- 15M.3.SL.TZ1.13a: Draw a Feynman diagram for this interaction.
- 15M.3.HL.TZ1.22a: When a free neutron decays to a proton, an electron is one of the decay products. (i) State...
- 15M.3.HL.TZ1.25a: State the quark structure of the K+.
- 15M.3.HL.TZ1.25b: Deduce one further quantity in this decay that is (i) conserved. (ii) not conserved.
- 15M.3.HL.TZ2.23a: (i) State what is meant by an antiparticle. (ii) Some particles are identical to their...
- 15M.3.HL.TZ2.25b: The reaction \({\bar v_\mu } + {e^ - } \to {\bar v_\mu } + {e^ - }\) is an example of a...
- 15M.3.HL.TZ2.23b: The Feynman diagram represents the...
- 15M.3.HL.TZ2.25a: State one conservation law that would be violated, if the following reactions were to...
- 14M.1.HL.TZ1.31: An alpha particle is directed head-on towards a nucleus of an isotope of iron. A second alpha...
- 15N.3.HL.TZ0.22a.iii: Explain whether this interaction involves the \({{\text{W}}^ - }\), \({{\text{W}}^ + }\) or...
- 15N.3.HL.TZ0.20a: A lambda baryon \({\Lambda ^0}\) is composed of the three quarks uds. Show that the charge is...
- 15N.3.HL.TZ0.20b.i: Discuss, with reference to strangeness and baryon number, why this proposal is...
- 15N.3.HL.TZ0.20b.ii: Another interaction is \[{\Lambda ^0} \to p + {\pi ^ - }.\] In this interaction strangeness...
- 14M.3.SL.TZ1.9a: Identify particle A.
- 14M.3.SL.TZ1.9c: Outline how the concept of strangeness applies to the decay of a K+ meson shown in this...
- 15N.3.HL.TZ0.22a.i: Describe what is meant by a virtual particle.
- 15N.3.HL.TZ0.22a.ii: Draw a Feynman diagram which represents this interaction.
- 15N.2.SL.TZ0.4a: Outline how the evidence supplied by the Geiger–Marsden experiment supports the nuclear model...
- 14M.3.SL.TZ1.9b: (i) Identify the interaction whose exchange particle is represented by B. (ii) Identify the...
- 14M.3.HL.TZ1.26b: Outline how the observation of the interaction represented by the diagram with the dotted...
- 15N.2.SL.TZ0.4b: Outline why classical physics does not permit a model of an electron orbiting the nucleus.
- 14M.3.HL.TZ1.26a: State (i) the name of the exchange particle represented by the dotted line.(ii) one...
- 15N.3.SL.TZ0.13a: A lambda baryon \({\Lambda ^0}\) is composed of the three quarks uds. Show that the charge is...
- 15N.3.SL.TZ0.13b.i: Discuss, with reference to strangeness and baryon number, why this proposal is...
- 15N.3.SL.TZ0.13b.ii: Another interaction is \[{\Lambda ^0} \to p + {\pi ^ - }\] In this interaction strangeness...
- 14N.3.SL.TZ0.13a.i: Identify the type of fundamental interactions associated with the exchange particles in the...
- 14N.3.SL.TZ0.13a.ii: State why \({\pi ^ + }\) mesons are not considered to be elementary particles.
- 14M.3.SL.TZ2.11b.i: Explain why the virtual particle in this Feynman diagram must be a weak interaction exchange...
- 14M.3.SL.TZ2.11c: A student claims that the \({{\text{K}}^ + }\) is produced in neutron decays according to the...
- 12N.1.SL.TZ0.29: In the Geiger–Marsden experiment alpha particles were directed at a thin gold foil. Which of...
- 12M.1.HL.TZ2.32: Which of the following is a correct list of particles upon which the strong nuclear force may...
- 11M.1.SL.TZ2.22: Which nucleons in a nucleus are involved in the Coulomb interaction and the...
- 13M.3.SL.TZ1.11a: State what is meant by the term elementary particle.
- 13M.3.SL.TZ1.12b: The Feynman diagram shows a quark change that gives rise to a possible decay of the Ω–...
- 13M.3.SL.TZ1.11b: The strong interaction between two nucleons has a range of about 10–15 m. (i) Identify the...
- 13M.3.SL.TZ1.12a: Deduce the strangeness of the Ω– particle.
- 13M.1.SL.TZ2.22: Which particle is acted on by both the strong nuclear force and the Coulomb force? A....
- 13M.3.HL.TZ1.23a: (i) State what is meant by the term elementary particle. (ii) Identify another elementary...
- 13M.3.HL.TZ1.25c: The interaction in (a) can also occur via the weak interaction with neutral current...
- 13M.3.HL.TZ2.9a: In a particular experiment, moving kaon mesons collide with stationary protons. The following...
- 12M.3.SL.TZ1.12a: Outline how interactions in particle physics are understood in terms of exchange particles.
- 12M.3.SL.TZ1.12e: The pion is unstable and decays through the weak interaction into a neutrino and an...
- 12M.3.SL.TZ1.12c: Determine whether or not strangeness is conserved in this decay.
- 12M.3.HL.TZ1.19a: A muon decays into an electron and two other particles according to the reaction equation...
- 11M.3.SL.TZ2.12b: State, with reference to their properties, two differences between a photon and a W boson.
- 11M.3.SL.TZ2.12a: Identify the particles labelled A and B.
- 11M.3.SL.TZ2.13b: The following particle interaction is proposed. \[p + {\pi ^ - } \to {K^ - } + {\pi ^ +...
- 11N.3.HL.TZ0.20b: Muons can decay via the weak interaction into electrons and neutrinos. One such decay...
- 11N.3.SL.TZ0.10a: State (i) what is meant by an elementary particle. (ii) to which class of elementary...
- 11N.3.SL.TZ0.10c: An electron is one of the particles produced in the decay of a free neutron into a proton. An...
- 12N.3.SL.TZ0.13a: State the name of a particle that is its own antiparticle.
- 12N.3.SL.TZ0.13b: The meson K0 consists of a d quark and an anti s quark. The K0 decays into two pions as shown...
- 12N.3.HL.TZ0.22a: State the name of a particle that is its own antiparticle.
- 12N.3.HL.TZ0.22b: The meson K0 consists of a d quark and an anti s quark. The K0 decays into two pions as shown...
- 12N.3.HL.TZ0.24a: A student states that “the strong nuclear force is the strongest of the four fundamental...
- 12N.3.HL.TZ0.24c: State two other conclusions that may be reached from deep inelastic scattering experiments.
- 12M.3.SL.TZ2.12a: Suggest why the kaon is classified as a boson.
- 12M.3.SL.TZ2.12b: A kaon decays into an antimuon and a neutrino, K+ →μ ++v . The Feynman diagram for the decay...
- 12N.3.HL.TZ0.24b: Describe how deep inelastic scattering experiments support your answer to (a).
- 13N.3.SL.TZ0.10c: The π0 particle can decay with the emission of two gamma rays, each one of which can...
- 13N.3.SL.TZ0.10d: Discuss whether strangeness is conserved in the decay of the Σ+ particle in (a).
- 12M.3.HL.TZ2.23b: A moving proton is incident on a stationary pion, producing a kaon (K meson) and an unknown...
- 12M.3.HL.TZ2.24b: Evidence for the Higgs boson might be discovered at the Large Hadron Collider (LHC) at CERN....
- 13N.3.SL.TZ0.10a: The Σ+ particle can decay into a π0 particle and another particle Y as shown in the Feynman...
- 11M.2.SL.TZ1.7c: Stable nuclei with a mass number greater than about 20, contain more neutrons than protons....
- 11M.3.SL.TZ1.12a: State what is meant by an exchange particle.
- 11M.3.SL.TZ1.12c: A meson called the pion was detected in cosmic ray reactions in 1947 by Powell...
- 09N.1.HL.TZ0.29: Protons and neutrons are held together in the nucleus by the A. electrostatic...
- 10M.1.SL.TZ1.23: Which of the following is true in respect of both the Coulomb interaction and the strong...
- 10N.1.SL.TZ0.23: The Geiger–Marsden experiment provides evidence for A. the existence of discrete atomic...
- 09N.1.SL.TZ0.23: In the Geiger–Marsden experiment \(\alpha \)-particles are scattered by gold nuclei. The...
- 10N.2.HL.TZ0.A5b.ii: A nucleus of \(_{\;{\text{79}}}^{{\text{199}}}{\text{Au}}\) decays to a nucleus of...
- 10N.2.SL.TZ0.B1Part2.b: (i) Outline, in terms of the forces acting between nucleons, why, for large stable nuclei...
- 10N.3.HL.TZ0.J3a: State what is meant by the standard model.
- 10N.3.SL.TZ0.D2b: The electron is a lepton and its antiparticle is the positron. The following reaction can...
- 10N.3.SL.TZ0.D2a: (i) elementary particle. (ii) antiparticle of a lepton.
- 10N.3.SL.TZ0.D2c: (i) quark structure of the \({\pi ^ + }\) meson. (ii) reason why the following...
