| Term | Definition |
|---|
| can light travel through a vacuum | Yes |
| what is the speed of light in a vacuum | universal constant (300,000 km/s) |
| Is speed of light in water greater than c | No because c is only the speed of light in a vacum |
| what is the speed of radio waves in a vacuum | 300,000 km/s |
| What is the speed of gamma rays in air | 300,000 km/s |
| In a vacuum which radiation is faster, IR or UV | UV |
| In glass which is faster, red light or violet light | red light |
| What is the effect of seperating light into colors | Dispersion |
| Does the frequency of light change in refraction or reflection | no |
| Does the wavelenght of light change in reflection | no |
| Does the wavelenght of light change in refraction | yes |
| what is the law of reflection | angle of incidence=angle of reflection |
| what is the law of refraction | index of refraction= speed of light in vacuum/speed of light in material |
| Because of refraction, does a fish in water appear to be closer or further away than it really is | appears to be closer |
| how is an electromagnetic wave produced | energy produced by light travels in a wave that is partly electric and magnetic |
| is most light in the electromagnetic spectrum visible | no |
| is sound an electromagnetic wave | no |
| is light a longitudinal wave | no |
| is glass transparent to visible light | yes |
| is glass transparent to UV or IR | no |
| is speed of light in glass more than C | no |
| does the speed of light change when it is refracted | yes |
| does the speed of light change when it is reflected | no |
| where does light go when reflected of a smooth surface | goes in one direction |
| where does light go when reflected of a rought surface | goes in different directions |
| Echo | a single reflection |
| reverberations | multiple reflections |
| what makes sound go over water a long distance at night | sound is refracted toward the ground and carries unusually up |
| The spectrum produced by a prism True or false | False |
| What causes colors to seperate out | dispersion |
| How is a mirage formed | it is the result of refraction |
| In a curved optical fiber, light scatters in random directions | False |
| Why are metals shiny | light that shines on them forces free electrons into vibration. These electrons emit their "own" light waves |
| Light Year | the distance light travels in one year |
| photon | massless bundles of electro magnetic energy |
| what are additive primary colors | red, green, blue |
| Red+Green | Yellow |
| Red+Blue | Magenta |
| Blue+Green | Cyan |
| what is a umbra | a total shadow |
| what is a penumbra | a partial shadow |
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