vocab earth enviromental

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Across
  1. 1. force which tries to pull two objects toward each other
  2. 4. distance measured in degrees east or west from the equator
  3. 6. the movement of one object around a center or another object
  4. 10. The belief that the Earth and other planets started from nebulae
  5. 11. cloud of dust, hydrogen, helium and other ionized gases in a galaxy.
  6. 13. the sun passes directly over the equator
  7. 14. the time when the sun reaches its highest or lowest point at noon
  8. 15. idea that the Earth and other planets revolve around the Sun
  9. 16. meaurment of a part of the Earth in relation to the north or south of the Earth's equator
  10. 18. the motion of the axis of a spinning body
  11. 19. the center of mass of two or more bodies
  12. 21. the process or act of turning or circling around something
  13. 22. is the act of melting things together
Down
  1. 1. relating to, measured from, or as if observed from the earth's center
  2. 2. all matter, energy, planets, galaxies and space
  3. 3. a noticeable change in the frequency of sound, light or water waves
  4. 5. the collection of eight planets and their moons in orbit around the sun
  5. 7. when the Moon passes directly behind Earth and into its shadow
  6. 8. group of many stars, with gas, dust, and dark matter
  7. 9. when the sun is covered completely by the moon
  8. 12. process in which a large nucleus splits into two smaller nuclei with the release of energy
  9. 17. accumulation of particles into a massive object by gravitationally attracting more matter
  10. 20. the rocking or swaying motion of the Earth