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Mirrors & Refraction
Term | Definition |
---|---|
ray | an imaginary straight line that represents the path light takes from its origin to an object |
reflect | to bounce off a surface and to form an image of an object, as in a mirror |
beam | a group of closely related rays of light |
law of reflection | a light ray is reflected by a flat mirror at the same angle at which it strikes the mirror |
line of symmetry | divides a figure evenly in half, each side is exactly the same |
horizontal symmetry | divides a figure in half evenly from side to side |
vertical symmetry | divides a figure in half evenly from top to bottom |
diverge | spread out, scatter |
converge | come together, focus |
concave | depression or curved inward |
convex | bulging or curved outward |
image | the reproduction of an object formed in a mirror |
light | energy moving through space from its source to an object and then from that object to our eyes |
speed of light | 186,000 miles per second |