(5.) Physics Hl/Sl. Quantum And Nuclear Physics / Astrophysics

44 Questions | Total Attempts: 273

SettingsSettingsSettings
Please wait...
Astrophysics Quizzes & Trivia

Quiz on physics section 13 and astrophysics, focusing on definitions. Don't screw up the definition questions! You getfree points if you just learn them.


Questions and Answers
  • 1. 
    "Below a certain [...], no photoelectrons are emitted" Above, an aspect of the photoelectric effect is described. Which are the missing words?
  • 2. 
    The minimum energy required for electrons at a surface to escape is called the [...] of the metal
    • A. 

      Threshold wavelength

    • B. 

      Blue shift

    • C. 

      Work function

    • D. 

      Planck's constant

  • 3. 
    The dual nature of light is simply called "wave-particle duality"
    • A. 

      True

    • B. 

      False

  • 4. 
    Is light a wave or is it a particle?
    • A. 

      Wave

    • B. 

      Particle

    • C. 

      Yes

  • 5. 
    "All moving particles have a "matter wave" with a wavelength associated with them" This hypothesis has a name. Which?
    • A. 

      Davisson and Germer hypothesis

    • B. 

      De Broglie hypothesis

    • C. 

      Schrödinger hypothesis

    • D. 

      Bainbridge hypothesis

  • 6. 
    Davisson and Germer conducted an experiment showing electron [...]
  • 7. 
    The description of particles (matter and /or radiation) in quantum mechanics is in terms of a(n) ...
    • A. 

      Work function

    • B. 

      Wave function

    • C. 

      Orbital

    • D. 

      Interpretation (the Copenhagen interpretation)

  • 8. 
    When a particle is observed, the wave function is said to [...]
  • 9. 
    The Copenhagen interpretation is a way to give a physical meaning to the mathematics of nuclear physics
    • A. 

      True

    • B. 

      False

  • 10. 
    "Position and momentum cannot be measured simultaneously" "Energy and time cannot be measured simultaneously" These linked variables are known as conjugate quantities in the [...] uncertainty principle
    • A. 

      Heisenberg

    • B. 

      Bainbridge

    • C. 

      De Broglie

    • D. 

      Schrödinger

  • 11. 
    "The discrete energies observed, having been emitted by an alpha particle or gamma photon from a nucleus, correspond to the difference between two nuclear [...]
  • 12. 
    The Bainbridge mass spectrometer provides evidence for the existence of ...
    • A. 

      Protons

    • B. 

      Neutrons

    • C. 

      Isotopes

    • D. 

      Nuclides

  • 13. 
    The electrically neutral, virtually undetectable particle accounting for the "missing" energy in beta decay is known as a(n)
  • 14. 
    "Antineutrino is the antimatter form of the neutrino, and accounts for missing energy in beta minus decay"
    • A. 

      True

    • B. 

      False

  • 15. 
    A small rocky body that drifts around the Solar System is known as a(n)
  • 16. 
    The bits of the asteroids that arrive on Earth are called ...
    • A. 

      Comets

    • B. 

      Earth asteroids

    • C. 

      Meteorites

    • D. 

      Constellations

  • 17. 
    Comets are mixtures of rock and ice in elliptical orbits around the sun. Their tales always point towards the sun
    • A. 

      True

    • B. 

      False

  • 18. 
    Any region of the sky labelled according to patterns of stars is known as a ...
  • 19. 
    Stars are grouped into so-called stellar ...
    • A. 

      Groups

    • B. 

      Constellations

    • C. 

      Clusters

  • 20. 
    Very large clusters are known as "abnormal clusters"
    • A. 

      True

    • B. 

      False

  • 21. 
    Our sun is stable because their is an equilibrium between outward pressure and inward [...] force
  • 22. 
    The total power radiated by a star is called its ...
    • A. 

      Apparent brightness

    • B. 

      Absolute brightness

    • C. 

      Apparent magnitude

    • D. 

      Luminosity

  • 23. 
    "The power received per unit area by a receiver on Earth is called the absolute brightness of the star
    • A. 

      True

    • B. 

      False

  • 24. 
    The seven main spectral classes, in order of increasing surface temperature, are the following:
    • A. 

      O, B, A, F, G, L, T

    • B. 

      O, B, A, F, G, K, M

    • C. 

      M, K, G, F, A, B, O

    • D. 

      T, L, G, F, A, B, O

  • 25. 
    Within spectral class O, the stars are the hottest. Which color do these stars have?
    • A. 

      Blue

    • B. 

      Yellow

    • C. 

      White

    • D. 

      Red