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Physical Sciencech12
| Question | Answer |
|---|---|
| Coherent light | light of only one wavelength that travels with its crest and troughs aligned |
| Fluorescent light | produced without excessive loss of thermal energy |
| Holography | technique that produces a 3d photographic image with out a lens |
| incandescent light | produced by heating a piece of metal until it glows |
| Incoherent light | light that spreads out and may contain more than one wavelength |
| Index of refraction | indicates how much a material slows down the light traveling through it |
| Mirage | image of a distant object produced by refraction of light through air layers of different densities |
| Opaque | material that allows no light to pass through |
| Pigment | colored material that absorbs some colors and reflects others |
| polarized light | light in which the waves vibrate in only one direction |
| Total internal reflection | light striking a surface between two materials reflects totally back into the first material |
| Translucent | material that transmits some light and blocks some light |
| Transparent | material that transmits almost all light |
| Two polarizing filters overlap at right angles ____ | Block all light |
| Lasers are used in all of the following except____ | Radio |
| Different colors of neon lights are created by adding ____ to the tube | Other gasses |
| ___ are typically filled with argon | Fluorescent bulbs |
| Incandescent lights have a filament usually made of ____ | Tungsten |
| A blue shirt looks ___ in red light | Black |
| A blue shirt looks blue in white light because ___ is reflected from the shirt | Blue light |
| All of the following materials would cause diffuse reflections except___ | glass |
| If light waves change speed when they pass from one medium to another, the light will be ____ | Refracted |
| Fluorescent light bulbs _____ than incandescent lights | Uses less energy |
| The color _____ is produced by blending the primary pigments | Black |
| All of the following are part of seeing your self in a mirror except ____ | Light from the mirror hits wall |
| The primary pigment colors are ____ | Magenta,cyan,yellow |
| Types of matter in a object determine the amount of light it absorbs and reflects ___ materials absorb or reflect nearly all light and cannot be seen through | Opaque Example is wood and wall |
| ___ materials allow some light to pass through but do not allow you to see clearly through them | translucent Example Skin,finger nails |
| ___ materials allow nearly all materials to pass through | Transparent example window, glass |
Created by:
amgrace