Light - Form of energy made up of very tiny particles called photons., Natural light - made by the nature, Bioluminescence - Organisms that can emit their own light, Artificial Light - man made, How light Travels? - Light travels in straight lines, How does light behave to different materials? - Reflection,Absorption,Transmission, Reflection - bouncing back of light, Diffusion - light strikes a rough surface that scatters in different directions, Refraction - is the bending of light as it travels from one medium to another., RED - has the highest wavelength, Violet - has the lowest wavelength, Prism - is a polished transparent glass with five triangular faces that separates light into seven band of colors  , Solar spectrum - is the rainbow that we see in the sky., TRANSPARENT - materials allowing light to pass through them., Examples of Transparent Materials - Glass top, screen protector, drinking glass, air, water, Translucent - materials allow some light to pass through, Examples of Translucent Materials - frosted glss, glass bricks, smoked and tinted glass, tracing paper, tissue paper, OPAQUE - materials that do not allow to pass through., Examples of Opaque Materials - Cardboard, plywood, tree, rock, book,

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