Across
- 1. This bridge is built with triangles made of steel bars
- 2. this simple machine has at least one slanting side and ends in a sharp edge
- 4. a twisting or turning force
- 6. a force that squeezes or squashes a structure
- 10. a beam that projects outward and is supported at only one end by a downward force
- 12. this simple machine is used when we want to raise a flag to the top of a pole.
- 15. the kind of force that can be stretched or squashed and then spring back to shape
- 17. the mass a liquid or gas is replaced by an object or material
- 19. a structure built against a wall to strengthen it
- 20. this bridge has a horizontal beam supported by two piers
- 22. the natural attraction force of objects to one another due to mass
- 23. a curved structure that spans a space
- 24. this simple machine consists of a stuck and a fulcrum
- 25. the force of a fluid on an object
Down
- 1. a force that stretches a structure
- 3. this simple machine is made of two simple machines combined together (an inclined plane is wrapped around a wedge)
- 5. This type of force is not part of a structure
- 7. the amount of matter in an object
- 8. this simple machine can be used as a ramp to help people load or unload products.
- 9. the resistance to movement of objects that are sliding against each other
- 11. This type of force is part of a structure
- 13. the upward pushing force of a liquid or a gas when an object is put into the liquid or gas
- 14. this simple machine consists of a rod secured to a wheel.
- 16. property of matter exerting a magnetic force
- 18. This type of bridge is best for crossing large spans
- 21. builders add a diagonal support piece to make a rectangular shape stronger
- 25. is a force that makes a straight material curved