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Lesson 3 &4
Definition/Vocabulary
| Definition | Vocabulary |
|---|---|
| Radiation | The transfer of energy as EM waves |
| Electromagnetic spectrum (EM) | The range of frequencies or wavelengths that an EM waves can have. This range is called |
| Infrared | Has slightly longer wavelengths than red light |
| Ultraviolet | Has slightly shorter wavelengths than violet light |
| Transparent | Matter that transmits light is |
| Translucent | Materials transmit light but do not let the light travel straight through |
| Opaque | Do not let any light pass through them |
| Absorption | Is the transfer of light energy to matter |
| Reflection | Light bounces off the object's surface.The bouncing of light off a surface is called |
| Refraction | Is the change in direction of a wave as it passes from one medium into another at an angle |
| Scattering | Occurs when light is sent in many directions as it passes through a medium |