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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 |