Simple Machines
Across
- 5. The distance from the tallest part of the ramp to the ground
- 6. Machines that have lots of components
- 9. The force made by the object we want to move--main part of a lever
- 10. ______ class lever - has the point of resistance in the middle
- 11. A simple machine that uses a wheel
- 12. It is a rigid bar that lets us exert force on a point of support and lift objects
- 13. When people are the main source of energy that makes a machine move
- 15. There are ______ classes of levers
Down
- 1. The shape a ramp makes against the ground
- 2. A common example of a first class lever, found in the classroom
- 3. ______ class lever - has the force in the middle
- 4. A ramp that lets us raise and lower objects
- 7. The distance from the beginning to the end of a ramp
- 8. In a first class lever, the point of support is ______ the force and the resistance
- 10. The point of ______ is a main part of a lever
- 14. The center part of a pulley