Simple Machines

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Across
  1. 2. The ability to perform a task without wasting time, effort, materials, or energy.
  2. 5. Advantage the ratio of a machine's output force to its input force.
  3. 7. A rigid bar used to pry, lift, or move an object, such as a crowbar or a hammer pulling a nail.
  4. 8. a wheel with a groove for a rope, used to lift heavy objects
Down
  1. 1. and Axle a simple machine consisting of a large wheel connected to a smaller rod
  2. 3. Plane a Ramp
  3. 4. Machine a basic device used to make work easier.
  4. 6. JOULE