Light.

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Presentation transcript:

Light

Vocab Words Ite—rock, mineral Kin—motion Lumin—light Phono—sound Semi—half

Reflection The speed of light is approximately 300,000 kilometers per second or 300,000 km/s. Reflection is the bouncing of light off of an object or surface. Reflection typically occurs on smooth surfaces. When light strikes a rough surface, diffusion scatters light in all directions.

Can you see your reflection in ocean waves? Why?

Transmission of Light A transparent object allows light to pass through easily. A translucent object allows some of the light to pass through. An opaque object does not allow any light to pass through.

Give examples of transparent objects.

Give examples of opaque objects.

Give examples of translucent objects.

Refraction & Absorption Refraction, the bending of light waves, occurs when light changes speeds as it moves through different substances. Absorption occurs when light strikes an object and is neither reflected nor transmitted. Dark-colored objects absorb most of the energy they receive. Lighter-colored objects reflect more light than they absorb.

What colors should you wear in summer?