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Physical Sciencech13
| Question | Answer |
|---|---|
| Plane mirror | a flat, smooth mirror |
| Virtual image | an image that your brain perceives even though no light rays pass through the location of that image |
| concave mirror | is a mirror whose surface curves inward |
| Optical axis | is an imaginary straight line drawn perpendicular to the surface of the mirror at the mirror’s center |
| Focal point | is the point on the optical axis on which light rays that are initially parallel to the optical axis converge after they reflect off the mirror |
| Focal length | the distance from the center of the mirror to the focal point |
| Real image | is an image that is formed when light rays converge to form the image |
| Convex mirror | is a mirror that curves outward, like the back of a spoon |
| Convex lens | is a lens that is thicker in the middle than at the edges |
| Concave lens | is a lens that is thinner in the middle and thicker at the edges |
| Cornea | a transparent covering on you eyeball where light enters your eye |
| Retina | is the inner lining of your eye,which has cells that convert the light image into electrical signals |
| Refracting telescope | a telescope that uses lenses to gather light from distant objects |
| Reflecting telescope | a telescope that uses mirrors and lenses to collect and focus light from distant objects |
| Microscope | is a device that uses two convex lenses with relatively short focal lengths to magnify small,close objects |
Created by:
amgrace