Across
- 2. not man made
- 4. the other cracks, round making a circle
- 5. made by volcano
- 6. how thick something is
- 8. light goes through
- 10. my first name
- 13. most common glass
- 14. mass per unit area
Down
- 1. used in FBI cars
- 3. random pieces put together
- 6. used for side car windows
- 7. 2 outside panes, plastic in middle
- 9. made from lightning
- 11. sodium oxide and heat make it
- 12. cracks going straight out from center