1. WEATHER AND CLIMATE

2. THE WATER CYCLE The water cycle is made up of a few main parts: Evaporation or transpiration Condensation Precipitation collection

3. 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.

4. 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

5. WATER CYCLE

6. TYPES OF RAINFALL There are 3 types of rainfall : Relief Rainfall Frontal Rainfall Convection Rainfall

7. Relief Rainfall H APPENS WHEN THE WARM AIR RISES OVER MOUNTAINS.THEN IT CONDENSES AND RAIN FALLS

8. Frontal Rainfall HAPPENS WHEN WARM AIR MEETS WITH COOL AIR .WARM AIR IS LIGHTER THAN COOL AIR SO ITS FORCED TO RISE

9. CONVECTION RAINFALL HAPPENS WHEN THE SUN HEATS UP THE GROUND WHICH HEATS UP THE AIR WHICH RISES ,CONDENSES AND THEN RAIN FALLS

10. ANTICYCLONES ANTICYCLONES : are high pressure weather systems The opposite of anticyclone is depression In winter anticyclones bring light wind , and hot days with few or no clouds. In summer they bring cloudless skies , fog and frost

11. DEPRESSIONS DEPRESSIONS : are low pressure weather systems. Depressions bring cloudy and rainy weather When the cold and warm air formed by depressions meet the is a bound between them which is called a front.

12. Depressions vs Anticyclones DEPRESSIONS ANTICYCLONES They are low pressure weather systems Produce 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

13. DEPRESSIONS

14. ANTICYCLONE

15. THE END PROJECT WORKED BY : ANDREA BELLIZZI CLASS : 3.1