Earth Science Choice Board 1

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Across
  1. 3. the process or result of joining two or more things together to form a single entity.
  2. 5. a period characterized by a particular climatic feature
  3. 7. a periodic variation in the inclination of the axis of a rotating object.
  4. 10. Theory the solar and stellar systems were developed from a primeval nebula.
  5. 12. organisms use sunlight to synthesize foods
  6. 14. having or representing the earth as the center
  7. 15. Effect an increase or decrease in the frequency of waves
Down
  1. 1. the star around which the earth orbits.
  2. 2. an imaginary line about which a body rotates.
  3. 3. the action of dividing or splitting something into two or more parts.
  4. 4. System the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
  5. 6. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
  6. 8. all existing matter and space considered as a whole; the cosmos
  7. 9. having or representing the sun as the center
  8. 11. Bang Theory the leading explanation about how the universe began.
  9. 12. a celestial body moving in an elliptical orbit around a star.
  10. 13. the action of rotating around an axis or center