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T3 - Light Energy
T3 - Energy
| Question | Answer |
|---|---|
| Light | A type of energy made up of photons. |
| Natural Sources | Natural light sources are not man-made and include the sun, stars, and fireflies. |
| Artificial Sources | Artificial light sources are man-made and include candles, lamps, devices and matches. |
| Reflection | Occurs when light bounces off a surface. The surface is typically smooth and shiny. |
| Refraction | Occurs when light rays change direction as them move through different mediums. |
| Absorbed | Absorption happens when light or sound energy is taken in by a material. For example, when sunlight hits a dark shirt, the fabric absorbs some of the light, making it warmer. |
| Transparent | Blocks very little to no light. Transparent mediums include materials such as plastic wrap, glass, water, and air. |
| Translucent | Translucent objects block some light but not all, allowing light to partially pass through. An example is frosted glass or wax paper. |
| Opaque | Does not let any light pass through it. |
| Light travels... | Light travels in a straight line. |
| Energy | Energy is the ability to work. You need energy to force an object to move. You need energy to make matter change. Energy makes motion and change possible. |
| Types of Energy | -Chemical -Mechanical -Electrical -Light -Thermal -Sound |
| Chemical Energy | A form of energy stored in chemical bonds. For example, food, fuel, potential energy. |
| Static | The kind of electricity created from friction between two materials. |
| Circuit | A closed path along which electric current flows. |
| Conductor | A material that allows electrical energy to flow. |
| Insulator | A material that does not allow electrical energy to flow. |
| Current | The flow of electricity in a circuit. |
| Transform | To change from one form of energy to another. |
| Energy Source | Provides electrical energy to the circuit. (Example, a battery. A battery is stored energy; chemical energy). |
| Wires | Wires conduct electricity through a circuit. |
| Electrical Load | Converts/transforms electrical energy to other forms. Examples: light bulb(s), LED, motor, buzzer, fuse, fan, Christmas lights, etc. |
| Battery/ Power Source | Stored energy; chemical energy that can be used in a circuit. |
| Switch | the switch controls the current. -Off (open switch) -On (closed switch) |
| BTW | Battery, Trace the Wire. |
| Series Circuit | Has one pathway for an electric current to flow through. |
| Parallel Circuit | Has multiple pathways for an electric current to flow through. |
| Electrical Conductors | Allow energy to flow. S I N C Copper |
| Electrical Insulators | Stop / slow energy from flowing. Examples: rubber, wood, plastic, fabric, cork, etc. |
| How heat moves.... | -radiation - moves in waves through space -conduction - moves from one object or substance to another when they touch -convection - moves through a liquid or gas until it is the same temperature throughout |
| Convex | (smaller) lens refracted. Convex lenses curve outward from the edges toward the center, bending light rays inward toward each other. Examples: glasses, magnifying glass, or telescope. |
| Concave | (bigger) Concave lenses curve inward from the edges toward the center, and they bend light so it spreads out. |
| Prism | A three-dimensional piece of glass that separates white light into a spectrum. |
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