Across
- 3. device that helps us do work.
- 5. simple machine that looks like an inclined plane, but is forced into an object.
- 7. purpose or task
- 9. a machine smaller group of parts within a complex machine that performs a specific function.
- 11. advantage amount by which a machine can multiply a force; calculated by dividing the output force by input force.
- 13. plane simple machine made up of a flat surface, such as a board, at an angle to another flat surface, such as ground or a table top; ramp.
- 15. system 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.
- 17. simple machine that consists of a cylinder with a groove cut in a spiral on the outside.
- 18. context in a machine a group of parts that works together to perform a general function, forming a complex machine.
- 20. simple machine made up of a rigid bar or plank that rotates on a fixed object called a pivot or fulcrum.
- 21. and Axle 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.
Down
- 1. simple machine made up of a wire, rope, or cable moving on a grooved wheel; can be fixed in place or movable.
- 2. law is a principle in fluid mechanics that states that a pressure change occurring anywhere in a confined incompressible fluid is transmitted throughout the fluid.
- 4. special types of linkage for transferring the energy from the engine to the wheels in large vehicles such as cars and trucks.
- 6. 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.
- 7. force that oppose motion.
- 8. force force a machine applies to an object.
- 9. ratio measure of how the speed of the object is affected by machine; calculated by dividing the input distance by the output distance.
- 10. measure of amount of force placed on a object.
- 12. belt or chain to transfer energy from an energy source to an object.
- 14. machine system in which simple machines all work together; parts of a complex machine that have just one function are called subsystem and often contain a simple machine.
- 16. pair of wheels with teeth that interlink; when they rotate together, one gearwheel transfers turning motion and force to the other.
- 19. force force applied to operate a machine.
- 21. done when a force acts on an object to make the object move; calculated by multiplying force times distance.