Across
- 3. The force of the Earth's gravity acting on an object
- 6. The "invisible" force acting on all structures
- 7. The amount of matter in an object
- 11. A bike helmet is an example of this type of structure
- 12. Triangular ridges created when you fold a beam
- 13. A curved structure often used to support loads
- 14. The force we created when we pulled back our catapults
- 16. The weight of the objects that a structure supports
- 17. A network of beams that form triangles
Down
- 1. The "look" of a structure
- 2. The type of forces that act between two different parts of a structure
- 4. The force created when you twist an object
- 5. Forces have both direction and ___________
- 8. A level structure designed to support a load
- 9. The "purpose" of a structure
- 10. The ability of an object to maintain or regain balance
- 15. A support placed underneath a beam