Unit D

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Across
  1. 2. measure of how the speed of the object is affected by a machine calculated by dividing distance by the output distance
  2. 3. 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
  3. 6. done when a force acts on an object to make the object move; calculated by multiplying force times distance
  4. 8. special type of linkage for transferring the energy from the engine to the wheels in a large vehicle such as cars and trucks
  5. 10. simple machine made up of a wire, rope, or cable moving on a grooved wheel; may be
  6. 13. tool or device made up of one basic machine
  7. 14. 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
  8. 18. force a machine applies to an object
  9. 20. smaller group of parts within a complex machine that performs a specific function
  10. 22. amount by which a machine can multiply a force; calculated by dividing the output force by the input force
Down
  1. 1. when pressure is applied to a liquid in a container, the pressure and force is transmitted equally and undiminished throughout the liquid; an enclosed liquid transmits pressure equally in all directions
  2. 4. 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
  3. 5. system in which simple machines all work together; parts of a complex machine that have just one function are called subsystems and often contain a simple machine
  4. 7. a group of parts that work together to perform a general function, forming a complex machine
  5. 9. device that helps us do work
  6. 11. a simple machine that consists of a cylinder with a groove cut in a spiral on the outside
  7. 12. 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
  8. 15. a simple machine made up of a rigid bar or plank that rotates on a fixed object called a pivot or fulcrum
  9. 16. purpose or task
  10. 17. force applied to operate a machine
  11. 19. force that opposes motion
  12. 21. up of one or many wheels; can be fixed in place or movable
  13. 23. belt or chain to transfer energy from an energy source to an object