Weather and Climate by Andrea Bellizzi, 3.01
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Transcript of Weather and Climate by Andrea Bellizzi, 3.01
WEATHER AND CLIMATE
THE WATER CYCLEThe water cycle is made up of a few main
parts:Evaporation or transpirationCondensationPrecipitationcollection
EVAPORATION : Evaporation is when the sun heats up water in rivers or lakes or the ocean and turns it into vapor or steam. The water vapor or steam leaves the river, lake or ocean and goes into the air. (transpiration is the same but the water is taken from trees)
CONDENSATION : Happens when the water vapour in the air gets cold and changes into clouds.
PRECIPITATION : Happens when the water that is in the clouds falls on earth.
COLLECTION : When water falls back to earth as precipitation, it may fall back in the oceans, lakes or rivers or it may end up on land. When it ends up on land, it will either soak into the earth and become part of the “ground water” that plants and animals use to drink or it may run over the soil and collect in the oceans, lakes or rivers where the cycle starts
WATER CYCLE
TYPES OF RAINFALLThere are 3 types of rainfall : Relief RainfallFrontal RainfallConvection Rainfall
Relief RainfallH APPENS WHEN THE WARM AIR RISES OVER MOUNTAINS.THEN IT CONDENSES AND RAIN FALLS
Frontal RainfallHAPPENS WHEN WARM AIR MEETS WITH COOL AIR .WARM AIR IS LIGHTER THAN COOL AIR SO ITS FORCED TO RISE
CONVECTION RAINFALLHAPPENS WHEN THE SUN HEATS UP THE GROUND WHICH HEATS UP THE AIR WHICH RISES ,CONDENSES AND THEN RAIN FALLS
ANTICYCLONES
ANTICYCLONES : are high pressure weather systems
The opposite of anticyclone is depressionIn winter anticyclones bring light wind , and
hot days with few or no clouds.In summer they bring cloudless skies , fog
and frost
DEPRESSIONS
DEPRESSIONS : are low pressure weather systems.
Depressions bring cloudy and rainy weatherWhen the cold and warm air formed by
depressions meet the is a bound between them which is called a front.
Depressions vs AnticyclonesDEPRESSIONS ANTICYCLONESThey are low pressure
weather systemsProduce rainy and cloudy
weather
They are high pressure weather systems
Produce hot and sunny weather and in winter they produce cloudless skies with fog and frost
DEPRESSIONS
ANTICYCLONE
THE ENDPROJECT WORKED BY : ANDREA BELLIZZI CLASS : 3.1