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14 Cards in this Set
- Front
- Back
________ refers to the free air temperature at a height of between ____ and ___ meters. |
Surface Air Temeprature 1.25 2 |
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_____ is the lowest temperature obtained after evaporating water from the wick-covered bulb of a thermometer at a specified rate of ventilation |
Wet Bulb Temperature |
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Wet Bulb temperature differs from the dry bulb temperature by an amount dependent on the temperature and humidity of the air. This difference is called |
Wet Bulb Depression |
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Is the temperature at which a sample of air must be cooled to attain saturation with respect to water, while mixing ratio and barometric pressure remain constant |
Dew point temperature |
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Is the natural temperature of the ambient atmosphere at the point and time of observation |
Dry bulb temperature |
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The thermometer shelter should be installed in such a position as to afford protection of the interior of the scree from ____ when the door is opened for readings. For this purpose, the door of the screen should preferably facing _____ in the Northen Hemisphere |
The direct rays of the sun; North |
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Thermometers should be installed inside a _____. |
Thermometer shelter |
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Also known as the apparent temperature, is what the temperature feels like to the human body when relative humidity is combined with the air temperature |
Heat index |
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______ is the amount of water vapor in the atmosphere |
Humidity |
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___ error should be avoided to correctly determine the temperature from a thermometer. |
Parallax |
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*The ratio in percent of vapor pressure of water vapor in the air to the saturation vapor pressure that would exist if the sample of air were saturated at the same pressure and temperature |
Relative Humidity |
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Name 4 typical thermometers found inside thermometer shelter |
1. Psychrometer 2. Hygrothermograph 3. Max & Min Thermometers mounted on a townsend support 4. Thermograph |
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A _____ measures the degree of hotness or coldness of a substance; work on principle of thermal expansion |
Thermometer |
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____ is an instrument that records air temperature continuously on a graphing paper. It usually consists of a cylinder made to revolve once each week by means of clockworks inside. |
Thermograph |