The Breath Of Life: Air
Chapter Name : Natural Resources |
Sub Topic Code : 103_09_14_02_03 |
Topic Name : The Breath Of Life: Air |
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Sub Topic Name : Rain |
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Introduction
Rains are formed by evaporation of water from water bodies into water vapor which rises up with the air and condenses to form rain.
Pre-Requisites:
Wind flow and its patterns.
Real Life Question:
How do we get rains and how are they formed?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Formation of water vapour | Water in the water bodies gets heated up during the day which evaporates to give water vapour which rises in the air. Some biological activities also produce water vapour. |
| Cooling of air | Air gets heated and rises up carrying water vapour. As it rises, it expands and cools to form water droplets by condensation which become heavy and fall as rain. |
| Formation of snow | When the temperature of air is low, precipitation occurs in the form of snow, sleet or hail. |
| Wind patterns | Most parts of India receives rain from the south-west or north-east monsoon winds. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Newspapers, weather reports on television or internet | Collect information about rainfall patterns across the country. |
Real life uses :
Rain is important for survival of life on earth.
Places to visit :
Rainfall or snow areas.
Practical examples around us
| Examples | Explainations |
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What you learn in Theory:
The formation of rain through the evaporation of water from water bodies by forming water vapour and then condensing to form water droplets
What you learn in Practice:
How rain is formed?