Science 8 Unit D Section 1.1 Simple Machines

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Across
  1. 2. an example of a pulley used to carry food from one floor to another in a building
  2. 3. this class of lever has the load between the fulcrum and the effort
  3. 4. this type of shovel is a combination of a wedge and a third class lever
  4. 5. a machine where many simple machines work together
  5. 7. this class of lever has the effort between the fulcrum and the load
  6. 8. this machine requires the user to exert force over a larger distance than the load moves
  7. 9. a jar lid is an example of this simple machine
  8. 10. what can penetrate materials with better hold...a nail or a screw?
  9. 11. our nails and teeth are examples of this simple machine
  10. 12. nail clippers, scissors, and pliers are examples
  11. 14. this device is a combination of a wedge and a first class lever
  12. 15. produces a shorter, but more powerful motion when the wheel is turned
  13. 16. humans use simple machines to perform a task in a way that is more ________
  14. 18. this machine allows the used to move heavy objects that are too heavy to lift
  15. 19. stapler, tweezers, and staple remover are examples
  16. 20. humans use simple machines to perform a task ________
  17. 21. this device is a combination of a wheel and axle and a second class lever
Down
  1. 1. this class of lever has the fulcrum between the load and effort
  2. 3. bottle opener, wheelbarrow, and nutcracker are examples
  3. 6. the fixed point or pivot point of a lever
  4. 9. lever, screw, ramp, pulley, wedge, and wheel and axle are all examples
  5. 13. screwdriver, steering wheel, and screwdriver are examples of this simple machine
  6. 17. this machine consists of a cable and a grooved wheel