Across
- 2. Type of wood derived from coniferous trees
- 5. Strong and corrosion-resistant metal
- 6. Type of wood derived from deciduous trees
- 7. Valuable metal often used in jewelry
- 8. Lightweight metal commonly used in aircraft
- 9. Surface wear caused by rubbing or friction
- 13. Reddish-brown metal; conductor of electricity
- 14. Can deform and return to its original shape; stretchy
Down
- 1. Durable and strong
- 3. Force that opposes the motion of two surfaces in contact
- 4. a strong and durable metal
- 7. Transparent material often used for windows
- 10. Easily broken or shattered; lacks flexibility
- 11. Durable metal commonly used in alloys
- 12. Having great weight