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Write on RIGHT Side Transparent Glass TRANSPARENT • Matter that transmits light. • Objects can be seen clearly through it • Ex: Air, water, some types of glass Non- Transparent Brick Wall • Frosted glass causes the image to look fuzzy Translucent • Materials transmit light, but do not let the light travel straight through • Objects look distorted or fuzzy • Ex: frosted glass, lamp shades Opaque • Materials do not let any light pass through them • Reflect light, absorb it, or both The shirt is opaque, because light does not pass through it, so we cannot see behind it • Ex: wood, brick, metal Absorption • When light enters a material but does not leave it • The transfer of light energy to matter • The shirt absorbs the light that falls on it, therefore the shirt is opaque When light strikes a smooth surface such as a mirror, it reflects in a uniform way Reflection • When light bounces off the surface of an object Reflection & Absorption The frog’s body is green because it reflects green and absorbs the other colors Light Transmission • The color of a transparent or translucent object works differently than it does for opaque objects • Some materials absorb some colors but let other color pass through • For example, a green soda bottle is not green because it reflects green light, but instead transmits green light (lets it pass through) and absorbs other colors Light through a Medium • When light passes through an object, it slows down • Denser medium = slower light • Different wavelengths slow down more than others • Ex: In a medium, the speed of violet light is less than the speed of red light Refraction • The change in direction of a wave as it passes from one medium into another at an angle • Causes a straight object to appear bent when it’s underwater LIGHT AND THE EARTH’S ATMOSPHERE • Light waves travel at 300,000,000 m/s through space • When light reaches the Earth, it slows down and refracts due to the gases in the atmosphere Scattering • When light is sent in many directions as it passes through a medium • The color of the sky is due to scattered light, because the sky scatters light with short wavelengths (blue & violet) Reflection (Left Side) • In text book, on page 313 cut out “Key Concepts” (#6, 7, & 8) • Answer the questions • Glue/ Staple on the left side next to notes