Climate 9 Social Science — Revision Notes
Climate refers to long-term weather patterns and atmospheric conditions of a region determined by latitude, altitude, and proximity to water bodies. India'
TL;DR: Climate refers to long-term weather patterns and atmospheric conditions of a region determined by latitude, altitude, and proximity to water bodies. I…
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Climate refers to long-term weather patterns and atmospheric conditions of a region determined by latitude, altitude, and proximity to water bodies. India'
Factors Determining Climate
- Latitude determines angle of sun's rays and seasonal temperature variations across regions
- Altitude decreases temperature with increase in elevation at approximately 1 degree per 165 meters
- Proximity to water bodies moderates temperature and increases precipitation in coastal areas
- Wind patterns and ocean currents influence temperature, precipitation, and seasonal weather
Indian Monsoon System
- Southwest monsoon (June-September) brings heavy rainfall to most of India causing agricultural seasons
- Northeast monsoon (October-February) brings rainfall to southeast coast and influence dry season in north
- Monsoon burst marks sudden onset bringing torrential rain after dry summer season
- Monsoon variability causes floods and droughts affecting agriculture and water availability
Regional Climate Variations
- Tropical regions near equator have high temperature and rainfall supporting tropical forests
- Temperate regions in mountains have moderate temperature suitable for specific crops
- Desert regions receive less than 25 cm annual rainfall with high temperatures and low vegetation
- Coastal regions have moderate temperature with high humidity and influence of maritime winds
Climate and Human Activities
- Agricultural calendar follows monsoon pattern with planting and harvesting seasons
- Water availability from monsoon determines irrigation needs and drought management
- Climate influences choice of crops, type of vegetation, and biodiversity in different regions
- Extreme weather events like floods and droughts cause economic loss and human suffering
Key Terms
- Climate: Long-term average weather pattern of a region determined by atmospheric and geographical factors
- Monsoon: Seasonal wind pattern bringing heavy rainfall during particular season of the year
- Precipitation: Water falling from atmosphere as rain, snow, sleet, or hail
- Weather: Atmospheric conditions of a region at a particular time or short period
Frequently Asked Questions
What is the role of monsoon in Indian climate and agriculture?
Monsoon brings seasonal rainfall essential for agriculture, determines agricultural calendar, and affects water availability. Monsoon variability causes floods and droughts affecting food production.
How does latitude and altitude affect climate?
Latitude determines sun angle and temperature with tropical regions hotter than polar regions. Altitude decreases temperature with elevation, creating distinct climate zones on mountains.
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