| A | B |
| electromagnetic spectrum | arrangement of electromagnetic waves according to their wavelengths and frequencies |
| frequency | the number of electromagnetic waves traveling past a fixed point in a specific unit of time (usually one second) |
| wavelength | the distance between the crest of one wave and the crest of the next wave |
| radiation | the transfer of energy (heat) through space by electromagnetic waves |
| ultraviolet radiation | part of the electromagnetic spectrum where wavelengths are just shorter than those of ordinary, visible violet light but longer than those of x-rays |
| infrared radiation | part of the electromagnetic spectrum where wavelengths are just longer than those of ordinary, visible red light but shorter than those of microwaves; also known as heat |
| visible light | part of the electromagnetic spectrum where wavelengths are just longer than those of ultraviolet radiation and just shorter than those of infrared radiation; a form of electromagnetic radiation that is visible to most human eyes |
| radio waves | part of the electromagnetic spectrum where wavelengths are longest, but frequency is the lowest. |
| photon | a small packet of light energy |
| spectroscopy | the study of the properties of light that depend on wavelength |
| Infrared | The wavelength used by the Hubble space telescope. |
| Faster | The shorter the wave length the _______________ the frequency |
| Gamma Waves | Which wavelength is the shortest, but highest frequency, and lethal to living cells. |
| Radio,Micro,Infrared,Visible, UltraViolet, Xray, Gamma | What is the correct order of the EM Spectrum? |
| short wavelength | Which wavelength produces a faster frequency |
| vaccuum | empty space; where no matter exsists |
| medium | matter (atoms and molecules) through which a wave travels |
| Microwaves | Electromagnetic waves that have shorter wavelengths and higher frequencies than radio waves. |
| Xrays | A form of electromagnetic radiation that has very high frequency waves and carries a lot of energy. Used in the medical field to diagnose bone fractures. |