Across
- 3. what machines do is their ___________
- 6. applying a force in a circular direction causes this simple machine to go up or down
- 10. a fixed pulley does not decrease the force needed to move an object but does change the _________ of force
- 11. this type of pulley gives you a mechanical advantage of more than one
- 13. movable pulley decrease the _________ needed to move an object
- 15. this type of pulley is attached to a surface and cannot be moved
- 16. when 2 or more machines work together a complex machine (sometimes called a __________ ) is formed
- 17. The wheel and axle is a simple machine that is really just 2 _________ of different diameters that turn together
- 18. a looped strip of flexible material that links two or more wheels
- 19. a lever is a rigid bar or plank that can rotate around a fixed point called a _________
Down
- 1. links two separated gears
- 2. in a lever, the force applied to a lever is called the _________ force
- 4. a hockey stick is a first/second/third class lever
- 5. round wheels with teeth that transfer force
- 7. simple machine that “splits” an object
- 8. a device that helps us do work
- 9. the weight an object has to lift
- 12. a direct link between two separated wheels or gears which transfer force
- 14. another word for “inclined plane”
- 16. a part of a larger system that performs one task
- 20. in a lever, the force applied to the object wanting to be moved is called the ________ force