Across
- 4. – accomplished when a force causes an object to move a distance and energy is transferred
- 5. – point at which a lever is supported
- 7. – group of individual parts or procedures that work together to accomplish a desired task
- 8. scale (Newton gauge) – most common force meter; consists of a spring with a hook on the end; as more force is applied to the hook, the spring stretches farther
- 9. Potential Energy – potential energy of an object that is able to fall
- 11. – forces that opposes the relative motion of an object
- 12. Lever – lever that always has the fulcrum between the input and output forces and the output force is always in the opposite direction to the input force (e.g., pry bar)
- 17. – two or more simple machines working together
- 19. – simple machine consisting of a grooved wheel with a rope or cable looped around it; can change the direction of the force or increase the output force, depending on whether it is fixed or movable
- 20. – measurement of the useful work done by a machine compared to the work needed to operate the machine
- 22. Energy – energy of an object in motion
- 26. – ability to do work
- 28. Plane – simple machine consisting of a sloping surface on which an object can move
- 29. – any mechanical system that reduces the force required to accomplish work
- 30. – amount of output that is produced per unit of time
- 31. Lever – lever that has the output force between the fulcrum and the input force (e.g., bottle opener)
- 33. Machine – machine that requires the application of a single force to do work
- 35. – simple machine made up of a rigid bar that is supported at one point, the fulcrum
- 36. Force – force that a machine applies to an object symbolized by F out
- 37. Forces – force that acts between the objects that are touching
- 38. Energy – energy that is stored
- 40. Assessment – analysis of numerical data
Down
- 1. Output Work – work that a machine is designed to perform
- 2. Systems – procedure or process designed to perform a task along with the people involved
- 3. System – group of physical parts that interact with each other and function as a whole in order to complete task
- 6. – amount of matter in an object
- 10. – individual who uses the goods or services provided by a system
- 13. Lever – lever that has the input force between the fulcrum and the output force and the input and output forces are in the same direction (e.g., garden rake)
- 14. – parts of a system
- 15. and Axle – simple machine consisting of a shaft or axle that is attached to a larger disk called the wheel (e.g. screwdriver)
- 16. – simple machine consisting of an inclined plane that travels through an object or material
- 18. – amount of force on an object due to gravity
- 21. Productivity – increase the amount of output that is produced per unit of time
- 23. Force - force applied to a machine, symbolized by F in
- 24. System – group of physical parts that interacts with each other and function as a whole in order to complete a task
- 25. – push or pull that acts as an object, measured in newton
- 27. Assessment – analysis made by observation
- 32. mechanical advantage (IMA) - mechanical advantage of machine that has no friction
- 34. Advantage (MA) – amount by which a machine can multiply an input force; determined by the ratio of the output force (F out) to the input force (F in)
- 39. System – replacement of human workers with machines that are controlled by a computer