Across
- 5. force applied to operate a machine-
- 6. simple machine that consists of a cylinder with a groove cut in a spiral on the ouside
- 9. simple machine made up of two wheels of different diameters that turn together; a longer motion on the wheel produces a shorter but more powerful motion at the axle
- 12. simple machine made up of a rigid bar or plank that rotates on a fixed object called a pivot or fulcrum
- 14. system that uses a liquid under pressure to move loads; device that uses liquids in a confined space to transfer forces; works according to Pascal’s law
- 15. a lever with the effort on one side, the fulcrum at the end and the load in the middle
- 16. measure the amount of force applied to a given area; as an equation p=F/A
- 18. a lever with the fulcrum in the middle and the load and effort on either side
- 20. a device that helps us do work
- 21. done when a force acts on an object to make the object move; calculated by multiplying force times distance
- 23. purpose or task
- 24. simple machine that looks like an inclined plane, but is forced into an object
Down
- 1. when pressure is applied to a liquid in a container, the pressure and force is transmitted equally
- 2. a group of parts that work together to perform a general function, forming a complex machine
- 3. simple machine made up of a flat surface, such as a board, at an angle to another flat surface, such as the ground or a table top; ramp
- 4. machine system in which simple machines all work together
- 7. measurement of how well a machine or device uses energy; can be calculated by dividing mechanical advantage by speed ratio or by dividing work output by work input
- 8. a plan or drawing produced to show the look and function or workings of a building, garment, or other object before it is built or made.
- 10. smaller group of parts within a complex machine that performs a specific function
- 11. a lever with the effort in the middle, the load on one side and the fulcrum on the other
- 13. pair of wheels with teeth that interlink; when they rotate together; one wheel transfers turning motion and force to the other
- 16. simple machine made up of a wire, rope, or cable moving on a grooved wheel; may be made up of one or many wheels; can be fixed in place or movable
- 17. force that opposes motion
- 19. tool or device made up of one basic machine
- 22. belt or chain to transfer energy from an energy source to an object (e.g., a bike chain)