Across
- 9. made by animals or natural processes
- 10. these structures protect something inside
- 11. twisting
- 12. failure due to compression
- 16. you need to balance this with quality when choosing materials
- 17. pulling apart
- 19. weakening of metal over time and use
- 21. the units of force
- 22. the change in size or shape of an object
- 24. include thermosetting and solvent-based glues
- 25. melting metal together
Down
- 1. _________ joints that allow for movement
- 2. the purpose of a structure
- 3. building structures stronger than what they will hold
- 4. tearing apart
- 5. the location where materials of a structure meet
- 6. surrounding the pieces with a different melted material
- 7. made by people
- 8. a spiderweb is an examples of a natural _________ structure
- 13. ________ structures are made of one solid material
- 14. shapes that fit together in a structure (think of lego)
- 15. __________ joints that are firmly held together
- 18. the function of looking good
- 20. pushing together
- 23. include nails, staples, bolts, screws, and rivets