Meteorology
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| The density of water vapor in a given volume of air | absolute humidity
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| Measures relative humidity with human hairs | hair hygrometer
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| Combines air temperature with relative humidity to determine an apparant temperature | Heat Index
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| Uses wet-bulb and dry-bulb temperatures to obtain relative humidity | Sling psychrometer
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| The maximum pressure that water vapor would exert if the air were saturated | saturation vapor pressure
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| Measures humidity by measuring the amount of infrared energy absorbed by water vapor | infrared hygrometer
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| Used to cool he air in hot, dry climates | evaporative cooler
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| The mass of water vapor in a given mass of air | specific humidity
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| An invisible balloon-like body of air | air parcel
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| The change of ice into vapor | sublimation
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| Can be described as the percent of water vapor in the air compared to that required saturationn | relative humidity
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| The lowest temperature that can be attained by evaporating water into the air is the | wet-bulb temperature
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| The temperature to which air must be cooled for saturation to occur is called | dew-point temperature or dew point
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| On most days the relative humidity reaches its highest value when the air temperature reaches its | lowest or minimum
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| The circulation of water within the atmosphere is called the | hydrologic
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| The process of water changing from a liquid to a vapor is called | evaporation
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| Instruments that measure humidity are called | hygrometers
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| When the air temperature increases, the saturation vapor pressure | increases
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| The process by which water changes from a vapor to a solid is called | deposition
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| Which is the best indicator of the actual amount of water vapor in the air? | dew-point temperature
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| If the air temperature remains constant, evaporating water into the air will increase the dew point and ______ | increase the relative humidity
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| Which best explains why in North America the Gulf Coast states are more humid in the summer than the coastal areas of southern California? | the surface water temperature of the Gulf of Mexico is very warm
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| Polar air is considered "dry" because the dew-point temperatures are often quite low. However, the relative humidity of this cold, polar air is usually high because | the air temperature and the dew point are fairly close together
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| As the air temperature decreases with no change in the dew point, the likelihood of condensation occurring | increases
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| Which condition below would best describe supersaturated air? | relative humidity is 110 percent
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| The relative humidity is a measure of the air's actual water vapor content(T/F) | F
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| The temperature at which water boils is dependent mainly upon air temperature (T/F) | F
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| On a hot, humid day, a good measure of how cool the human skin can become is the wet-bulb temperature(T/F) | T
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| Relative humidity is always given as a percent(T/F) | T
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| The ratio of the mass of water vapor in a given volume of air to the mass of remaining dry air describes the mixing ratio(T/F) | T
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| If you turn on your oven and open its door, the increase in air temperature should raise the relative humidity inside your home(T/F) | F
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| When the air is saturated, an increase in air temperature will cause condensation to occur(T/F) | F
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| Suppose the air temperature inside you home is 78 F and lowered to 68 F. As long as moisture content inside doesn't change, the relative humidity should increase(T/F) | T
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| The dew-cell determines the amount of water vapor in the air by measuring the air's actual vapor pressure(T/F) | T
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| Near the Earth's surface at the same temperature and level in the atmosphere, warm humid air is less dense than warm dry air (T/F) | T
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| All other factors being equal, increasing wind speed enhances evaporation(T/F) | T
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| The change of state of water vapor into a liquid is called deposition(T/F) | F
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| All other factors being equal, it should take slightly longer to cook veggies on a day the atmospheric pressure is low, compared to pressure being very high(T/F) | T
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| If it rains at the surface, the relative humidity at the surface must be 100 percent(T/F) | F
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