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