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Physical Science 2
Week of 3/23-3/27
| Term | Definition |
|---|---|
| Light | form of energy that travels in a STRAIGHT line and can travel through empty space |
| Sound | form of energy produced by vibrations |
| Electrical | form of energy that flows in a circuit |
| Thermal | form of energy that produces heat |
| Reflection | the BOUNCING back of light rays EX: mirror |
| Refraction | the BENDING of light rays as they pass through a different medium EX: straw in water |
| Prism | a tool used to refract light and separate it into ROYGBIV |
| Transparent | completely see-through because light is transmitted EX: a window |
| Translucent | light is slightly transmitted, so you can see through a little bit EX: sheer curtains |
| Opaque | can not see through at all because all light is absorbed EX: black sweater |
| Force | a push or a pull |
| Friction | a force that works against motion |
| Inertia | an object in motion tends to stay in motion, and an object at rest stays at rest-- unless a force is applied to it EX: our bodies continue to go forward in a moving car even when brakes are applied. |