Refraction - Light changes direction as it passes from one medium to another., Reflection - Light hits an object and bounces back changing its directions., Light - Energy that allows us to see. It travels in a straight line., Transparent - Materials that let all the light to pass through., Translucent - Materials that allow some light to pass through., Opaque - Materials that let no light to pass through. , Natural - Sources of light such as the Sun, stars or lava., Artificial - Sources of light such as a lamp, a mobile or a projector.,

Light Energy Definitions

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