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sciencech11
| Question | Answer |
|---|---|
| Electromagnetic wave | electric charges that can travel through space where mater does not exist |
| Photon | is a mass-less bundle of energy that behaves like a particle |
| Radio waves | are electromagnetic waves with wavelengths longer than 10cm |
| Microwaves | electromagnetic waves with wavelengths between 0.1 mm and 30 cm |
| Infrared waves | are electromagnetic waves with wavelengths between about one-thousandth of a meter and about 700-billionths of a meter |
| Visible light | is the range of electromagnetic waves that you detect with your eyes |
| Ultraviolet waves | electromagnetic waves with wavelengths from about 400-billionths to 10-billionths of a meter |
| X-rays | electromagnetic waves with wavelengths between about ten-billionths of a meter and ten-trillionths of a meter |
| Gamma rays | electromagnetic waves with wavelengths shorter than about 100-trillionths of a meter |
| Carrier wave | an electromagnetic wave with the specific frequency that a station is assigned |
| Modulation | the process of adding the signal wave to the carrier wave |
| Analog signal | are electric signals whose values change smoothly over time |
| Digital signal | is an electric signal where there are only two possible values: on and off |
| Transceiver | transmits one radio signal and receives another radio signal |
| Global positioning system | is a system of satellites,ground monitoring stations, and receivers that determine your exact location at or above earths surface |