What must we have in order to see things?, Light, What is dark?, When there is no light., What is the light called that bounces off objects?, Reflected light, Light from the sun is dangerous. What could you use to protect your eyes from it?, A sun shade, or sunglasses., Shadows are formed when light is blocked by what type of object?, Opaque, The size of a shadow can be changed by moving what?, The light source.

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