Astronomy 102 Final Review Questions


  1. Go through the suggested HW problems, Quizzes, and Labs.
  2. Know relevant terms to prepare for the fill-in-the-black questions.
  3. Know the stars that make up the constellation of Orion


  1. What is the range of star colors from coolest to hottest?
  2. What forms of light have the shortest to the longest wavelength?
  3. How does the force of gravity change if you increase/decrease the mass and/or distance?
  4. Know how to calculate MarvinŐs weight on another planet or star.


  1. Know the different types of light an object emits if heated to different temperatures


  1. Know WienŐs Law and how it apply it
  2. Know Stefan-BoltzmannŐs Law and how to apply it
  3. Know KirchoffŐs laws.
  4. Know EinsteinŐs theory of Gravity
  5. What can binary star systems tell you about the individual stars?


  1. Know the features on the Sun


  1. Where and how is energy generated in the Sun?


  1. What are the hottest to coolest regions of the Sun?


  1. What are sunspots? How big are they? How are they created? How long do they last?


  1. What are the different regions on the HR diagram?
  2. What spectra types are hotter and cooler? What luminosity classes are brighter and dimmer?
  3. What does the starŐs position on the HR diagram tell you about the star?


  1. How can you detect a black hole? What is at the center of a black hole?
  2. What would happen to the solar system if the Sun turned into a black hole?
  3. What will happen to a white dwarf as itŐs mass increases?
  4. What evolutionary stages will a low, intermediate and high mass star go through from beginning to end?
  5. How low/high in mass can stars get?  How small/big in size can stars get?
  6. How will the SunŐs position on the HR diagram change as it evolves?
  7. What is a white/red/brown/black dwarf?
  8. What is hydrostatic equilibrium? What types of stars maintain hydrostatic equilibrium?
  9. What regulates the temperature of a star?


  1. What supports a star (brown dwarf, main sequence, red giant, white dwarf, neutron star) from collapsing?
  2. Where are stars born?
  3. What conditions do stars need to form?
  4. What is the difference between a nova and a supernova?
  5. What is the difference between Type Ia and Type II supernovas?
  6. The Milky Way is composed of how many spiral arms?  How are spiral arms formed?
  7. How do stars orbit around the galaxy?
  8. How did the Milky Way evolve?
  9. Where is the SunŐs location in the Milky Way?
  10. How was the shape of the Milky Way determined?  Through what type of observations?  
  11. Know the different type of Galaxies.  What are their population percentages?
  12. What is the rotation curve of the Milky Way?
  13. What happens when galaxies merge together?
  14. How can galaxy distances be determined? How can galaxy masses be determined?
  15. How did Hubble contribute to our understanding of the universe?
  16. What is HubbleŐs Law?
  17. What is Doppler Shift? What is cosmological red-shift?
  18. What is dark matter and dark energy?
  19. What observational evidence shows that the universe is expanding?
  20. How does the universe look on very large scales?
  21. What is an open, flat and closed universe and what are the related shapes to those types of universes?
  22. How does the density relate to the shape of the Universe? What is the critical density?
  23. Based on our present data, how will the universe evolve in the future?
  24. What is the Big Bang theory? What pieces of evidence support the theory?
  25. What forces are acting to expand or contract the universe?
  26. What percentage of the universe is made up of the stuff that you are made of? What is the rest?
  27. Challenge Problem (13%):  Know the life cycle of stars (where stars are born, how they live their lives, and what happens when they die).  Know how the elements are formed.  Know how to explain this illustration.


You are allowed to bring one 3 x 5 inch note-card: double-sided and hand-written.