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Precipitation Precipitation is any form of water that falls to the Earth's surface. 1.

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Presentation on theme: "Precipitation Precipitation is any form of water that falls to the Earth's surface. 1."— Presentation transcript:

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2 Precipitation Precipitation is any form of water that falls to the Earth's surface. 1

3 Types of Precipitation The type of precipitation that falls to the ground depends upon the formation process and the temperatures of the environment between the cloud and the surface 2

4 different types of precipitation? Rain Snow Hail Sleet Freezing Rain 3

5 Rain Rain develops when growing cloud droplets become too heavy to remain in the cloud and as a result, fall toward the surface as rain 4

6 Rain can also begin as ice crystals that collect each other to form large snowflakes As the falling snow passes through the freezing level into warmer air, the flakes melt 5

7 Rain from snow! 6

8 Snow Snow is formed when ice crystals form from water vapor that is in the clouds directly above your heads! This process is called sublimation 7

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10 Hail Hail is formed when updrafts carry raindrops upwards into extremely cold areas of the atmosphere 9

11 Hail There the raindrops merge and freeze. When the frozen clumps get to heavy they fall to earth 10

12 Hail Hail can vary in size, from the size of a small stone to that of a baseball! So be careful 11

13 Sleet Sleet is frozen raindrops. Sleet begins as rain or snow and falls through a deep layer of cold air that contains temperatures below freezing that exist near the surface. 12

14 Sleet Rain that falls through this extremely cold layer has time to freeze into small pieces of ice 13

15 Freezing Rain Freezing rain is falling rain that cools below 0°C, but does not turn to ice in the air The water is “supercooled” 14

16 Types of rainfall What are the different types of rain and where do they happen? 15

17 How it rains 1. Warm air rises 2. Air cools 3. Condensation 4. Clouds form 5. Rain 16

18 Types of rainfall There are three types of rainfall: 1.Relief or Topographic 2. Convectional 3. Frontal 17

19 1. Relief Rain 2. Forced to rise over the mountains 1. Warm moist air from the sea 18

20 3. Air cools as it is forced to rise 4. Condensation 5. Clouds form 6. Rain 19

21 Relief rain is quite common in Western Ghat where the high land areas are 20

22 2. Convectional Rain 1. The sun heats the ground which heats the air 2. Warm air rises 21

23 4. Air cools as it is forced to rise 5. Condensation 6. Clouds form 7. Rain 22

24 Convectional rain is common in the Rajasthan and Plain areas of India in Summer It is also common in Equatorial region of the world along equatorial low pressure belt rgion everyday between 2 to 4 pm 23

25 Convectional Rainfall 24

26 3. Frontal Rain or Cyclonic 1. Mass of warm air meets a mass of colder air 2. Lighter warm air rises over heavier cold air in the temperate region along Warm and Cold front 25

27 3. Warm air cools 4. Condensation 5. Clouds form 6. Rain 26

28 Frontal rain is very common all Temperate regions of the world 27


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