weather
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each of the black spaces below before clicking
on it to display the answer.
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| Weather | The state of the atmosphere at a specific time and place.
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| Relative humidity | The amount of water vapor in the air compared to the amount needed for it to be saturated at a specific temp.
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| wind | The greater the difference in pressure, the faster the wind blows.
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| cumulus | Big, white, and, puffy clouds.
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| Air temp. | the result of movement of air molecules: the faster the molecules move, the warmer the air temp.
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| dew point | the temp at which air is saturated and condensation forms.
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| cold front | occurs when cold air moves under warm air, lifting an cooling it so that clouds form
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| warm front | occurs when warmer air moves over colder, denser air.
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| stationary front | occurs when a boundary between air masses stops moving due to similar masses.
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| low preasure system | swirl counter clock wise.
A.K.A. cyclones.
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| air mass | a large body of air that has properties similar to the part of Earth's surface over which it develops.
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| hurricane | a large, swirling low preasure system that forms over the warm atlantic ocean.
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| blizzard | a winter storm with: winds of atleast 56 km/h
low temp.
visibility less that 400m in falling or blowing snow.
these conditions lasting for 3 hrs or more.
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| severe weather safety | watch-issued when conditions are favorable for severe weather.
warning-issued when severe weather already exists.
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| meteoroligist | a person who studies weather and the atmosphere using weather instruments to make weather maps.
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| stationary model | a set of symbols that shows the weather conditions at a specific location on earth's surface.
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| occluded front | occurs when cold air approaches cool air and forces the warm air between them aloft.
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| front | a boundary between two air masses of different density, moisture, or temp.
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| cirrus | curly whispy; the only cloud made of ice crystals.
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| nimbus | described a cloud that produces precipitation, as in cumulonimbus or nimbo stratus.
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| what causes thunder | air around a bolt of lighting heats quickly then quickly cools and contracts, forming sound waves.
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| what causes lighting | movement of air with in a cloud causes different parts of the cloud to become oppisitely charged.
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| precipitation | water in any form of matter, falling from clouds. rain drops vary in size due to:-strength of updrafts in clouds.
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| four main types of precipitation | -rain
-snow
-sleet
-hail
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| thunderstorms | -signs: heavy rain, lighting and thunder possibly hail.
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| tornado | a violently rotating column of air.
created by wind shear during a severe thunderstorm.
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| high preasure systems | -swirl clockwise
-A.K.A. anticyclones
-associated with clear weather
- measured with a barometer.
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| isotherm | a line that connects points of equal temp. on weather maps.
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| isobar | a line that connects points of equal preasure on a weather map.
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| cirro | high altitude
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| strato | low altitude
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