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