Simple Machines
Across
- 3. unit for force
- 8. a hammer is an example of this type of lever
- 10. this is an inclined plane that is wrapped in a spiral around a cylinder
- 11. a device that makes work easier by changing the size or direction of a force
- 12. this is a pair of inclined planes that move
- 14. a comparison of a machine's work output with the work input
- 16. unit for work
- 17. machines that are made of two or more simple machines
- 19. unit for time
- 20. a simple machine that has a grooved end of the rope, and an input force is applied to the other end
Down
- 1. the rate at which work is done or energy is transformed
- 2. in this type of lever the fulcrum is in the middle of the load and input force
- 4. a fixed point that is found in levers
- 5. the work done by a machine on an object
- 6. the transfer of energy to an object by using a force that causes the object to move in the direction of the force
- 7. a simple machine consisting of two circular objects of different sizes
- 9. a wheel-barrow is an example of this type of lever
- 12. the work you do on the machine
- 13. unit for power
- 14. a number that tells how many times a machine multiplies force
- 15. a simple machine that is a straight, slanted surface
- 18. a inclined plane makes work easier by decreasing the input force, but increasing the _____________
- 21. a simple machine that has a bar that pivots at a fixed point called a fulcrum