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1. G. Sun - The Sun is the major source of light for the earth.
2. A. Absorption - Absorption is the process of taking in of light and not reflecting it back.
3. D. Optics - Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behaviour of visible, ultraviolet, and infrared light.
4. F. Refraction - Refraction is the bending of the path of a light wave as it passes from one material into another material.
5. C. Opaque - Opaque objects do not allow light to pass through them.
6. J. Visible Light - Visible light is the light that we can see, and thus is the only light detectable by the human eye.
7. H. Translucent - Translucent objects allow some light to travel through them.
8. E. Reflection - Reflection is when incident light (incoming light) hits an object and bounces off.
9. Not Sure.
10. I. Transparent - Materials that allow most all light to pass through them are called transparent.