Topics 1 & 2 Vocab

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