Across
- 3. breaks suddenly if hit or bent
- 4. lets light pass through
- 6. has holes so water can pass through
- 7. be shaped by hammering or by pressing
- 8. does not let electricity pass
- 9. does not let light pass through it
- 10. does not let heat pass through
- 11. does not let water pass through it
Down
- 1. lets heat pass through
- 2. lets electricity pass
- 5. lets light pass but shatters it