ChapD1.2

50 %
50 %
Information about ChapD1.2

Published on April 29, 2008

Author: stviator4b

Source: slideshare.net

Description

Air Masses Weather

Air and Weather

Air and the Sun weather begins w/ the sun provides energy for making weather amount of energy reaching Earth different in different places more at equator less at poles uneven heating causes air to move - makes weather

weather begins w/ the sun

provides energy for making weather

amount of energy reaching Earth different in different places

more at equator less at poles

uneven heating causes air to move - makes weather

most of the sun’s energy never reaches Earth lost in space the energy that does reach Earth 3/10 reflected back into space 3/10 warms the air 4/10 warms land and ocean atmosphere traps the heat greenhouse effect w/o greenhouse effect most of the sun’s energy would be reflected back into space and the surface would be too cold to support life

most of the sun’s energy never reaches Earth

lost in space

the energy that does reach Earth

3/10 reflected back into space

3/10 warms the air

4/10 warms land and ocean

atmosphere traps the heat

greenhouse effect

w/o greenhouse effect most of the sun’s energy would be reflected back into space and the surface would be too cold to support life

Air Masses air masses: huge bodies of air, covering thousands of km has same general properties as the land or water over which it forms moisture content and temperature moist air masses form over water dry air masses form over land air masses that form over the poles are cold air masses that form over the equator/tropics are warm

air masses: huge bodies of air, covering thousands of km

has same general properties as the land or water over which it forms

moisture content and temperature

moist air masses form over water

dry air masses form over land

air masses that form over the poles are cold

air masses that form over the equator/tropics are warm

 

Air Masses Meet when 2 air masses meet they usually don’t mix form a border called a front most weather happens along fronts cold front forms when cold air mass catches up to a warm air mass colder air mass forces the warmer air up into the atmosphere as warmer air is pushed upwards it cools and makes clouds rain develops - thunderstorms occur along cold fronts

when 2 air masses meet they usually don’t mix

form a border called a front

most weather happens along fronts

cold front forms when cold air mass catches up to a warm air mass

colder air mass forces the warmer air up into the atmosphere

as warmer air is pushed upwards it cools and makes clouds

rain develops - thunderstorms occur along cold fronts

warm front forms when warm air mass catches up to cold air mass warm air slides over the colder, thicker air clouds form steady snow or rain may fall as the front approaches and passes then the sky becomes clear and temps rise if a front stops moving it is a stationary front can stay in one spot for several days constant fall of rain or snow

warm front forms when warm air mass catches up to cold air mass

warm air slides over the colder, thicker air

clouds form

steady snow or rain may fall as the front approaches and passes

then the sky becomes clear and temps rise

if a front stops moving it is a stationary front

can stay in one spot for several days

constant fall of rain or snow

COLD FRONT WARM FRONT

Air Masses Move wind speed often increases as a front approaches direction also changes air pressure changes as air masses move over an area front moves closer - air pressure drops Front moves over the area - air pressure rises

wind speed often increases as a front approaches

direction also changes

air pressure changes as air masses move over an area

front moves closer - air pressure drops

Front moves over the area - air pressure rises

temp changes as a front moves over an area warmer air comes from a warm front cooler air comes from a cold front

temp changes as a front moves over an area

warmer air comes from a warm front

cooler air comes from a cold front

Summary sun provides energy to make weather atmosphere traps heat near Earth’s surface - greenhouse air masses form over continents and oceans when 2 air masses meet they form a front fronts: areas where most weather happens

sun provides energy to make weather

atmosphere traps heat near Earth’s surface - greenhouse

air masses form over continents and oceans

when 2 air masses meet they form a front

fronts: areas where most weather happens

Add a comment

Related presentations