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Chapter 4
Meteorology
| Question | Answer |
|---|---|
| The density of water vapor in a given volume of air | absolute humidity |
| Measures relative humidity with human hairs | hair hygrometer |
| Combines air temperature with relative humidity to determine an apparant temperature | Heat Index |
| Uses wet-bulb and dry-bulb temperatures to obtain relative humidity | Sling psychrometer |
| The maximum pressure that water vapor would exert if the air were saturated | saturation vapor pressure |
| Measures humidity by measuring the amount of infrared energy absorbed by water vapor | infrared hygrometer |
| Used to cool he air in hot, dry climates | evaporative cooler |
| The mass of water vapor in a given mass of air | specific humidity |
| An invisible balloon-like body of air | air parcel |
| The change of ice into vapor | sublimation |
| Can be described as the percent of water vapor in the air compared to that required saturationn | relative humidity |
| The lowest temperature that can be attained by evaporating water into the air is the | wet-bulb temperature |
| The temperature to which air must be cooled for saturation to occur is called | dew-point temperature or dew point |
| On most days the relative humidity reaches its highest value when the air temperature reaches its | lowest or minimum |
| The circulation of water within the atmosphere is called the | hydrologic |
| The process of water changing from a liquid to a vapor is called | evaporation |
| Instruments that measure humidity are called | hygrometers |
| When the air temperature increases, the saturation vapor pressure | increases |
| The process by which water changes from a vapor to a solid is called | deposition |
| Which is the best indicator of the actual amount of water vapor in the air? | dew-point temperature |
| If the air temperature remains constant, evaporating water into the air will increase the dew point and ______ | increase the relative humidity |
| 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 |
| 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 |
| As the air temperature decreases with no change in the dew point, the likelihood of condensation occurring | increases |
| Which condition below would best describe supersaturated air? | relative humidity is 110 percent |
| The relative humidity is a measure of the air's actual water vapor content(T/F) | F |
| The temperature at which water boils is dependent mainly upon air temperature (T/F) | F |
| On a hot, humid day, a good measure of how cool the human skin can become is the wet-bulb temperature(T/F) | T |
| Relative humidity is always given as a percent(T/F) | T |
| 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 |
| 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 |
| When the air is saturated, an increase in air temperature will cause condensation to occur(T/F) | F |
| 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 |
| The dew-cell determines the amount of water vapor in the air by measuring the air's actual vapor pressure(T/F) | T |
| 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 |
| All other factors being equal, increasing wind speed enhances evaporation(T/F) | T |
| The change of state of water vapor into a liquid is called deposition(T/F) | F |
| 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 |
| If it rains at the surface, the relative humidity at the surface must be 100 percent(T/F) | F |
Created by:
Vale123
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