Across
- 6. A object circling another object
- 7. different objects building up one main object
- 9. The perimeter around a circle
- 10. two objects that hit each other
Down
- 1. one part of something that makes a whole
- 2. the resistance that one surface or object encounters when moving over
- 3. a piece of rock from space that has landed on earth
- 4. floating chunks of rock,that are thought to be parts of old planets
- 5. a floating pile of dust and ice that has a tail
- 8. Not even or balanced