Topics 1 & 2 Vocab

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Across
  1. 3. determines the fineness of a detail a telescope can produce of an object view
  2. 4. the lens through which you view a magnified object using a telescope; eyepiece
  3. 5. a ray of light changing direction when it passes through a new substance
  4. 8. celestial bodies that orbit a star in a solar system (ex: Earth, Mars, Neptune)
  5. 11. the location of a celestial body relative to a fixed Earth (as though celestial bodies circled the Earth)
  6. 13. the ocular lens of a telescope
  7. 15. Sun-centered model of the universe
  8. 16. the angle measured above a horizon when determining the location (altitude-azimuth co-ordination) of a celestial body
  9. 17. Earth-centered model of the universe
  10. 18. the angle measured clockwise from North when determining the location (altitude-azimuth co-ordination) of a celestial body
  11. 19. a model of the universe that places the Sun at the center, with Earth and planets revolving around it; heliocentric
  12. 20. the device used to measure the azimuth of an object
  13. 21. the large lens at the front of the telescope
Down
  1. 1. a figure that looks like a squashed circle; planets move in elliptical orbits around the Sun
  2. 2. Newton’s law states that all objects attract all other objects and provides an explanation for the planet’s elliptical orbit
  3. 6. a ray of light changing direction when it bounces off a surface
  4. 7. groupings of stars that form patterns, which appear like objects and are given names (ex: Orion, The Big Dipper)
  5. 9. all objects seen in the sky (ex: Sun, Moon, planets, stars)
  6. 10. a set of axes of any kind that is used to describe the positions or motions of things
  7. 12. a model of the universe that places Earth at the center, with the Sun and planets revolving around it ; geocentric
  8. 14. the device used to measure the altitude of an object