Across
- 2. a space machine
- 4. when the amount goes up
- 7. a response
- 8. done
- 11. a feature of Earth
- 13. someone who uses tools
- 14. the amount of something
- 15. a way of measuring distance
Down
- 1. how good something is
- 3. it goes on and on
- 5. something happening
- 6. to make a really loud noise
- 9. when something bounces back
- 10. something very expensive
- 12. used in a boat