| Question |
 |
|
| Answer |
|
|
| joule |
measurement of energy flow - 1 watt = 1 joule/s |
| power |
rate of energy flow |
| spectrum |
a prism split into the rainbow of light |
| emission |
light that is emitted |
| absorption |
light that is absorbed |
| transmission |
light that is transmitted |
| reflection |
light that is reflected |
| transparent |
materials that transmit light |
| opaque |
material that absorb light |
| wavelength |
distance from one peak to the next |
| frequency |
number of peaks passing by any point each second |
| light waves |
vibrations of both electric and magnetic fields |
| photons |
individual pieces of light |
| electromagnetic spectrum |
complete spectrum of light |
| electromagnetic radiation |
name for light itself |
| infrared |
light with wavelengths longer that red light |
| radio waves |
longest-wavelength light |
| microwaves |
between infrared and radio waves that range from micrometers to millimeters |
| ultraviolet |
light with wavelength shorter that blue light |
| x-rays |
light with shorter wavelength than ultraviolet |
| gamma rays |
light with the shortest wavelengths |
| atomic number |
number of protons in a nucleus |
| atomic mass number |
combined number of protons and neutrons in an atom |
| ionization |
process of stripping electrons from atoms |
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