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Week 4
| Term | Definition |
|---|---|
| Machine | something that replaces human effort and makes work easier. |
| Simply Machine | A tool that makes work easier; has few or no moving parts. energy-the ability to do work. |
| Energy | The ability to do work |
| Work | The ability to move something |
| Wheel and axle | a simple machine consisting of a grooved wheel turned by a cord or chain with a firmly attached axle together with supports. |
| Lever | a simple machine consisting of a solid bar that rotates around a pivot point; used to lift objects. |
| Pulley | a simple machine made up of a rope wrapped around a wheel. When a downward force is applied on the rope, an upward force is created. |
| Screw | a simple machine made up of a shaft with grooves that wrap around it going from top to bottom. |
| Inclined plane | an object with a flat, tilted surface, a simple machine that helps things roll or slide upward off the ground. |
| Wedge | a simple machine that can be used to split objects apart, hold objects in place, or lift objects from the ground; consists of two inclined planes joined together. |
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AJB1685435
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