Across
- 4. to be uneven
- 6. to understand
- 8. when people join or share together
- 9. when something bounces of the object
Down
- 1. to be puzzling
- 2. a metal piece that connects to another metal piece
- 3. super large
- 5. a person who studies the universe
- 7. a force that attracts objects to one another.