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LMS Ch 23.2 DR

Clouds and Fog Directed Reading

QuestionAnswer
What must be available for water vapor to condense and form a cloud?? A solid surface.
The lowest layer of the atmosphere is the?? Troposphere.
What is present in the troposphere that is essential for cloud formation?? Tiny suspended Particles.
Suspended particles that provide a surface for water vapor to condense are called?? Condensation Nuclei.
What happens when water molecules collect on condensation nuclei?? Water Droplets form.
What condition must the air be in for clouds to form?? The rate of condensation must be higher than the rate of evaporation.
What happens to molecules in rising air?? They move farther apart.
What occurs in adiabatic cooling?? The temperature of an air mass decreases as the air rises.
What does the adiabatic lapse rate describe?? The rate at which the temperature of rising or sinking air changes.
What is the adiabatic lapse rate of clear air?? -1°C for every 100 m that air rises.
What is the average adiabatic lapse rate of cloudy air?? Between -0.5°C and -0.9°C per 100 m that air rises.
Stratus Clouds?? Clouds with a flat base forming at very low altitudes.
Altostratus Clouds?? Middle-Altitude Clouds that usually produce little precipitation.
Cumulus Clouds?? Billowy, low-altitude clouds.
Cumulonimbus Clouds?? High, dark storm clouds.
Cirrus Clouds?? Feathery Clouds composed of ice crystals.
Cirrostratus Clouds?? Clouds that form a high, transparent veil.
Radiation Fog?? Forms due to the loss of heat by radiation when Earth cools at night.
Advection Fog?? Forms when warm, moist air from above water moves over a cold surface.
Upslope Fog?? Forms when air rises along land slopes.
Steam Fog?? Forms when cool air moves over an inland warm body of water.
Created by: ericyonggyuhong
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