Across
- 3. a force that acts from within the structure
- 7. a force in a twisting motion
- 8. a force that pushes in the opposite direction
- 9. an example of a natural structure
- 11. a push or pull motion
- 12. a force that squeezes something together
- 13. a type of bridge that consists of a horizontal beam
- 14. an example of an external force
Down
- 1. a force that acts on a structure from outside
- 2. a bridge that uses cables
- 4. a bridge made of semicircular shape supports
- 5. something with a definite size, shape, and purpose
- 6. a bridge made of triangles
- 10. a stretching force