Across
- 3. provides an inert atmosphere
- 6. sky is dark
- 9. is one of the most useful elements
- 10. really cool math teacher
- 12. makes cars go fast
- 13. is used for something with high voltage
Down
- 1. is the life of earth
- 2. makes the higher-pitched tone
- 4. you breath it
- 5. protects your cells
- 7. is wet
- 8. is dry
- 11. cream godly