Earth Science Unit 9 Lesson 2

1234567891011121314151617181920
Across
  1. 6. Property of planetary matter measured in grams
  2. 8. Speed of an object in a given direction
  3. 9. Dark patches that temporarily appear on the sun
  4. 10. Change in an object's speed or direction
  5. 11. Scientist who published laws of physical motion
  6. 15. Body that orbits a more massive object
  7. 17. Tool used by scientists to observe distant stars
  8. 18. Computer program modeling collisions and space events
  9. 20. Cloud of dust and gas forming planets
Down
  1. 1. Scientist who proposed original nebular hypothesis model
  2. 2. Property combining with gravity to form rings or resist changes in motion state
  3. 3. Flattened spinning cloud shape around young sun
  4. 4. Path of planets or bodies moving around a object in space
  5. 5. Force that pulls particles, planets, and matter together universally
  6. 7. Mathematician who refined the spinning cloud model
  7. 12. Rocky inner planets like Earth and Mars
  8. 13. Object that is launched or thrown forward
  9. 14. Layer composed of hydrogen surrounding gas giants
  10. 16. Bodies formed from colliding clumps in rings
  11. 19. International array composed of sixty-six radio dishes