Space Exploration Unit Vocabulary- Topic 1 and 2

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Across
  1. 2. Device used to measure the azimuth of an object.
  2. 4. A set of axes of any kind used to determine a position or motion of things.
  3. 8. Figure that looks like a squashed circle. Planets in the solar system travel in a similar manner.
  4. 9. A model of the universe that places the sun at the center with the planets and moon revolving around it.
  5. 11. Newton’s law that states all objects attract other objects and provided an explanation for the planets' orbit.
  6. 13. Angle measured from above the horizon in degrees.
  7. 15. Celestial bodies in our solar system that orbits the sun.
  8. 17. A model of the universe that places the Earth at the center with the sun, moon and planets revolving around it.
  9. 19. Determines the fineness of detail a telescope can produce of an object.
  10. 21. Another word for ocular lens.
Down
  1. 1. Lens from where you view a magnified object using a telescope.
  2. 3. Objects seen in the sky like the sun and the planets.
  3. 5. Used to locate a celestial body relative to a fix Earth.
  4. 6. Grouping of stars that form patterns and are given names.
  5. 7. A change of direction of a ray of light, sound or heat in passing through one medium into another.
  6. 10. Large lens at the front of a telescope.
  7. 12. Device used to measure the altitude of an object.
  8. 14. Angle measured clockwise from north.
  9. 16. Another word for heliocentric.
  10. 18. To cast back light, heat or sound from a surface.
  11. 20. Another word for earth-centered.