Waves where particle motion is perpendicular to wave direction. - Transverse, Waves where particle motion is parallel to wave direction. - Longitudinal, Bouncing back of waves when hitting a barrier. - Reflect, Materials that do not allow light to pass through. - Opaque, Straight lines representing the path of light or sound. - Rays, Vibrations transmitted through a medium, perceived by ears. - Sound, Small waves on the surface of water or similar mediums. - Ripples, Materials that allow light to pass through clearly. - Transparent, Materials that allow some light to pass, but not clear images. - Translucent, Electromagnetic radiation visible to the human eye. - Light, Device that captures images by focusing light. - Camera, Dispersion of light or sound in different directions. - Scattered,

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