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