CP Sci 9- 1st Sem.
Gen Chem - 1st Sem.
1. Describe the three basic forms of clouds.
2. Explain how the shape of a cloud how air is moving through it.
stratus cumulus cirrus condensation level dry-adiabatic lapse rate moist-adiabatic rate
Clouds are present all around us practically every day of the year. The formation and type is dependant on the temperature, pressure, amount and level of moisture, and the particulate matter present in the atmosphere. The formation of clouds requires condensation and cooling and a set of specific conditions.
Fog and Frost
Fog and frost are formed as air comes into contact with a colder surface that is at or below the dew point of the air. The temperature of the air determines whether fog and frost forms is the air temperature. If the temp is above 0oC fog forms and visa-versa. The type of fog formed is determined by the conditions surrounding it.
Types of Clouds
are formed as warm moist air
rises, cools around droplet nuclei and becomes saturated. As the
temperature passes the dew point water droplets begin to form. When
millions get together they form clouds. Clouds are classified according to
their height and shape.
Classification: Shape & Height
Meteorologists use the adiabatic (absorption of heat without a change of temperature) cooling rates of dry and moist air and the dropping dew point to predict rain and precipitation levels.
Last modified: September 05, 2004