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cabral notes on weather
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23
Science
7th Grade
04/24/2013

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Term
Weather
Definition
refers to the state of the atmosphere at a certain time
Term
Humidity
Definition
The amount of water vapor in n the air
Term
Relative Humidity
Definition
is the measure of the amount of water vapor present in the air compared to the amount needed for saturation
Term
Dew point
Definition
The temperature at which air saturated and condensation forms
Term
Classification of clouds
Definition
Some clouds bring rain or snow, while thin wispy clouds appear on mostly sunny days
Term
Classification 2
Definition
The shape and height of clouds vary with temperature, pressure, and the amount of vapor in the atmosphere
Term
Classification 3
Definition
The three main clouds are stratus, cumulus, and cirrus
Term
Stratus
Definition
smooth even sheets in the sky. Usually form at low altitudes and may be associated with fair weather
Term
Fog
Definition
When air is cooled, it forms a stratus cloud called fog
Term
Cumulus
Definition
Are massive, puffy, white clouds, often with flat bases . Can be associated with fair weather or thunderstorms
Term
Cirrus
Definition
Clouds appear fibrous or curly. they are high, thin, white, feathery clouds made of ice crystal.
Term
Precipitation
Definition
water falling form clouds
Term
Rain or snow producing clouds
Definition
Usually are dark. because they have so much water, sunlight can not pass through them.
Term
meteorologist
Definition
is a person who studies weather
Term
station model
Definition
shows the weather conditions at a specefic location on Earths surface
Term
Isothern
Definition
A line that connects points of equal tempature is called and isothern
Term
Isobar
Definition
Is a line drawn to connect points of equal atmatospherec pressure
Term
Air mass
Definition
A large body of air that has properties similair to the part of Earth's surface over which it develops
Term
Front
Definition
A boundrary between two air mases of differetn density, moisture or tempurature
Term
Occluded front
Definition
Involves three three air masses of different tempurature, cold air, warm air, and cool air
Term
Stationary fronts
Definition
Occurs when a boundary between air masses stops moving
Term
station model
Definition
a map using a combination of symbols
Term
isotherm
Definition
a line that connects points of equal temperature
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