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12 Cards in this Set
- Front
- Back
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Incident ray |
A light ray that strikes a surface |
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Reflected ray |
A light ray that is reflected from a surface |
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Normal |
A line perpendicular (that is 90°) to the surface where the incident ray strikes |
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Angle of incidence |
The angle between the incident ray and the normal |
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Angle of reflection |
The angle between the reflected ray and the normal |
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Plane mirror |
A mirror with a flat surface |
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Image |
The appearance of an object in a smooth, shiny surface. It is produced by light from the object being reflected by the surface. |
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Element |
A substance made of one type of atom. It cannot be split up by chemical reactions into simpler substances. |
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Compound |
A substance made of atoms of two or more elements that have joined together by taking part in a chemical reaction |
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Mixture |
An amount of matter made from two or more substances. Each substance is spread out through the other substance or substances. |
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Chromatography |
A process in which substances dissolved in a liquid are separated from each other by allowing the liquid to flow through porous paper. |
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Colour |
Colour is a light of fixed wavelength. |
