This week friends learned that light moves in straight lines. Tiny light particles try to get everywhere.
How light gets in our class, houses or apartments. How? Some things let light through. We call them transparent or see through. Such things like glass, see through cups, windows in houses and cars are transparent. Other things can stop light, block light rays- we call these things opaque. All solid things are opaque. Opaque things make shadows. Trees, building, cars, birds, and even our bodies are opaque.
When the sun is in front of us, our shadow is behind.
When the sun is behind us, our shadow is in front.
Friends noticed that shadow is only seen where there is light. No light, no shadow.
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