Space Exploration Unit Vocabulary- Topic 1 and 2

123456789101112131415161718192021
Across
  1. 3. A change of direction of a ray of light, sound or heat in passing through one medium into another.
  2. 4. Large lens at the front of a telescope.
  3. 6. A model of the universe that places the Earth at the center with the sun, moon and planets revolving around it.
  4. 8. Objects seen in the sky like the sun and the planets.
  5. 11. A set of axes of any kind used to determine a position or motion of things.
  6. 16. A model of the universe that places the sun at the center with the planets and moon revolving around it.
  7. 17. Newton’s law that states all objects attract other objects and provided an explanation for the planets' orbit.
  8. 20. Celestial bodies in our solar system that orbits the sun.
  9. 21. Device used to measure the azimuth of an object.
Down
  1. 1. Another word for heliocentric.
  2. 2. Used to locate a celestial body relative to a fix Earth.
  3. 5. Another word for earth-centered.
  4. 7. To cast back light, heat or sound from a surface.
  5. 9. Determines the fineness of detail a telescope can produce of an object.
  6. 10. Lens from where you view a magnified object using a telescope.
  7. 12. Figure that looks like a squashed circle. Planets in the solar system travel in a similar manner.
  8. 13. Grouping of stars that form patterns and are given names.
  9. 14. Angle measured clockwise from north.
  10. 15. Another word for ocular lens.
  11. 18. Device used to measure the altitude of an object.
  12. 19. Angle measured from above the horizon in degrees.