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26 Cards in this Set
- Front
- Back
Evaporation |
When there is more liquid escaping into the air than there is liquid joining the water. |
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Condensation |
When there is more liquid joining the water rather than escaping. |
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Saturation |
When the amount of evaporation is the same as condensation |
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sublimation |
When ice turns to water vapor or vice versa |
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Humidity |
The amount of water vapor in the air. |
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Absolute Humidity |
Density of the water vapor, or the massof water in a cubic meter of air. When air heats up it expands, so the absolutehumidity decreases as temperature rises. |
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Relative humidity |
The amount of humidity in the air relative to the maximum humidity that is allowed at that temperature. |
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Dew Point |
The temperature at which the relativehumidity will be 100% |
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Methods of Condensation |
Cooling the air; adding water vapor |
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Diabetic Method |
Removing the energy from the air |
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Dew |
water on our glass in that the air near the surface iscooled to the dew point, generally at night |
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Radiation Fog |
appears whenthe air at night gives off enough longwave radiation to cool to the dew point |
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Advection Fog |
when warm, moist air moves over a cooler surface |
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Adiabatic method |
Dropping the temperature by changing the volumeof the air (usually going up height-wise) |
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Dry Adiabatic Method |
Rising air cools at about -10C for every 1000 meters until saturation; lower pressure- larger volume - lower temp. |
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Wet Adiabatic Method |
Rising and saturated air cools at about -6 C/1000 |
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condensation nuclei |
Dust, soot, and salts floating around in the air for clouds to form around them. |
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Stratus Clouds |
clouds that are often inthick layers that can cover the whole sky |
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Cirrus Clouds |
Are thin andwispy cirriiform clouds |
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Cumulus Clouds |
thepuffy, cotton-ball type clouds |
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Nimbus |
is the term associated with rain, so clouds with this in their name are rainy clouds |
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Types of Precipitation |
Sleet, Hail, Snow, Rain |
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Atmospheric Stability |
This refers to how easily air will rise. If air is stable, it can be pushedup, but then will drop back down. Unstable air will keep rising. |
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Convectional Precipitation |
Caused by differential heatingof the ground surface. If there is enough rising and enough moisture available,the rising air results in rain. |
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Orographic precipitation |
The method of getting air to rise by pushing it over a mountain and it expands as it goes up. |
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Rainshadow Effect |
Downwind of such mountain ranges, it tends to be dry becausethe air has lost much of its moisture crossing the mountains. |