Across
- 4. object orbiting around another object
- 6. ___________ and Ptolemy were supporters of the Geocentric model
- 10. the large mass at the center of the accretion disk becomes the _________
- 11. bowl shaped depression
- 12. gravity of the sun and moon effect on bodies of water
- 13. ___________ theory, idea for the formation of our solar system
- 15. step before planets, increased mass of planetesimals cause more collisions
- 19. _______________ and Copernicus were supporters of the Heliocentric model
- 21. dark flat planes of the moon
- 22. first step of the Giant-Impact Theory
- 23. ratio that tells the shape of an orbit
- 24. distance between the two foci
- 25. the moon is a natural ______________ of Earth
- 27. cloud of gas and dust
- 28. model of the solar system with the sun at the center
- 30. when the eccentricity is closer to ________ the shape is more flattened
- 32. a ___________ mass has less gravitational pull
- 33. layers of gas that surround a planet
- 34. model of the solar system with the Earth at the center
Down
- 1. when the eccentricity is closer to ________ the shape is more round
- 2. gravity is the ___________ that draws objects toward the center
- 3. a word to describe the gaseous outer planets
- 5. small "baby" planets formed from the collision of dust
- 7. the amount of "stuff" something is made of
- 8. two types of eclipses solar and __________
- 9. the name of an orbit
- 12. a word to describe the rocky inner planets
- 14. spinning around a central axis
- 16. widest point of an ellipse
- 17. one of the foci could represent the sun while the other is ________ space
- 18. ____________ space station
- 20. as the dust and gas spin, it begins to flatten near the edges creating the _______ disk
- 26. partial or complete obscuring of light
- 28. elevated, light colored planes of the moon
- 29. a planet that orbits a star outside of our solar system
- 31. gravity pulling on the "stuff" something is made of
- 35. an object that is __________ has more gravitational pull