Galaxies and the Universe

Steven Dutch, Natural and Applied Sciences, University of Wisconsin - Green Bay
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  1. How Big is our Galaxy?
    1. 1000 light years across
    2. 10,000 light years across
    3. 100,000 light years across
    4. 1,000,000 light years across
  2. Where are we in our Galaxy?
    1. In the central hub
    2. In the disk 2/3 of the way to the edge
    3. At the extreme edge of the disk
    4. Neither in the hub nor the disk
  3. We know our location in our Galaxy by observing what?
    1. The movements of nearby stars
    2. Positions of Globular Star Clusters
    3. Motions of small satellite galaxies
    4. The expansion of the Universe
    5. Areas of star formation in the Galaxy
  4. Our galaxy is in the center of:
    1. We are not at the center of anything
    2. A small group of 100 galaxies
    3. A cluster of 1,000 galaxies
    4. A supercluster of a million galaxies
  5. How is our Sun moving in the galaxy?
    1. Standing Still
    2. Moving straight away from the center
    3. Moving out of the disk plane
    4. Orbiting once every 250 million years
  6. The evidence that galaxies are receding from us is:
    1. They have gotten smaller since we first observed them
    2. They have gotten fainter since we first observed them
    3. Their light is blue-shifted
    4. Their light is red-shifted
  7. The energy released at the Big Bang is now observed as:
    1. Visible light
    2. X-rays
    3. Infrared
    4. Ultraviolet
    5. Faint microwaves
  8. To get an object moving at the speed of light would require:
    1. Earth’s energy output for 100 years
    2. The Sun’s energy output for 100 years
    3. The Sun’s energy output for a million years
    4. Infinite Energy
  9. This great astronomical discovery was made by a woman astronomer:
    1. The recession of galaxies
    2. Relativity
    3. How chemical elements form in stars
    4. Variable stars as distance indicators
    5. Parallax of distant galaxies
  10. In the evenings in _______ we look toward the center of the galaxy
    1. Summer
    2. Fall
    3. Winter
    4. Spring
  11. Where is the Solar System in relation to the center of the Milky Way?
    1. near the center
    2. at the extreme outer rim
    3. outside it
    4. two-thirds of the way from the center to the rim
  12. These stars give us a distance scale to the galaxies:
    1. Cepheid variables
    2. red giants
    3. white dwarfs
    4. pulsars
  13. Why aren’t astronomers very worried about the "missing mass" in the universe?
    1. They think the entire concept is an error.
    2. The missing mass has recently been accounted for.
    3. There are no ways to estimate the amount of mass in the Universe.
    4. There are so many forms the missing mass could take.
  14. The "missing mass" in the universe is more accurately described as:
    1. Antimatter
    2. Imaginary
    3. Non-luminous
    4. Undiscovered particles
  15. Einstein was led to his ideas on relativity by thinking about
    1. How gravity worked
    2. Why energy was conserved
    3. Why magnets always had two poles
    4. What it might be like to travel at the speed of light
  16. Frames of reference that move at constant speed and in a uniform direction are called
    1. Relativistic
    2. Inertial
    3. Platonic
    4. Copernican
  17. One of the unexpected things Einstein deduced about gravity was that it:
    1. Decreases faster than distance squared
    2. Is not the same as mass measured by inertia
    3. Redshifts light
    4. Affects magnetism
  18. The expression "Curved Space" means
    1. Planets travel in circular orbits
    2. Galaxies are mostly round
    3. The Universe is a sphere
    4. The rules for calculating distance in the Universe may not be the same as in everyday life
  19. Sa, Sb and Sc galaxies differ in
    1. The number of stars they have
    2. The types of stars they have
    3. The tightness of their spiral arms
    4. Their radio emissions
  20. About 300,000 years after the Big Bang, the Universe cooled enough for atoms to form. The immediate consequence of this was:
    1. Galaxies could form
    2. The Universe inflated
    3. The speed of light slowed down
    4. It became possible for the Universe to transmit light
  21. Which of the following is out of chronological order?
    1. Nuclear and electromagnetic forces become distinct
    2. Heavy particles like protons and electrons become stable
    3. Atoms form
    4. Stars and galaxies form
    5. The Universe undergoes radical inflation
  22. As seen from Earth, the center of the Galaxy is in the constellation:
    1. Pegasus
    2. Orion
    3. Hercules
    4. Virgo
    5. Sagittarius
  23. The Doppler Effect causes light from an object moving toward us to:
    1. be red-shifted
    2. be blue-shifted
    3. undergo no change
    4. become green
  24. The Doppler Effect causes light from an object moving away from us to:
    1. be red-shifted
    2. be blue-shifted
    3. undergo no change
    4. become green
  25. The Doppler Effect causes light from an object moving across our line of sight to:
    1. be red-shifted
    2. be blue-shifted
    3. undergo no change
    4. become green

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Created 05 December 2008, Last Update 14 Dec 2009

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