Atmospheric Moisture — Chapter Summary
ICSE · Class 11 · Geography
Summary of Atmospheric Moisture for ICSE Class 11 Geography. Part of the ICSE Class 11 Geography syllabus. Atmospheric moisture is the water present.
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Overview
Atmospheric moisture is the water present in air in gaseous, liquid, and solid forms. Although it forms only 0 to 4% of the atmosphere, it is one of the most important elements for weather and climate. It influences precipitation, heat balance, storm growth, cloud formation, and rainfall patterns. M
Key Concepts
Atmospheric moisture exists as water vapour
Atmospheric moisture exists as water vapour, water droplets, and ice crystals. It is small in quantity but crucial for weather and climate because it
Water moves continuously between oceans
Water moves continuously between oceans, atmosphere, and continents through evaporation, transpiration, condensation, and precipitation. Solar energy
Evaporation is the change of water
Evaporation is the change of water from liquid to vapour. It increases with higher temperature, dry air, clear skies, larger water surfaces, and stron
About 600 calories of energy
About 600 calories of energy are needed to convert 1 gram of water into water vapour without any change in temperature.
Humidity means the amount of water
Humidity means the amount of water vapour present in air. It is measured in grams per cubic metre.
Learning Objectives
- To understand the forms and importance of atmospheric moisture
- To explain evaporation and the factors that affect it
- To distinguish between absolute humidity, specific humidity, and relative humidity
- To understand condensation, dew point, and adiabatic temperature changes
- To identify forms of condensation such as dew, frost, fog, mist, clouds, and precipitation
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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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