Humidity
ICSE · Class 9 · Geography
Summary of Humidity for ICSE Class 9 Geography. Key concepts, important points, and chapter overview.
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Water is unique in Earth's atmosphere as it exists in all three states - solid (ice), liquid (water), and gas (water vapour). Humidity refers to the amount of water vapour present in the air at any given time and place. Understanding humidity is crucial as it affects weather patterns, precipitation,
Key Concepts
The amount of water vapour present
The amount of water vapour present in the air at a particular time and place. It is measured as a percentage and varies based on temperature - warmer
The ratio between actual water vapour
The ratio between actual water vapour present in air and the maximum amount of water vapour the air can hold at that temperature, expressed as a perce
The actual amount of water vapour
The actual amount of water vapour present in a given volume of air, regardless of temperature, expressed in grams per cubic metre (g/m³). It decreases
The process by which invisible water
The process by which invisible water vapour (gaseous state) changes into liquid water or ice when air is cooled below its dew point temperature.
Water in liquid or solid forms
Water in liquid or solid forms falling to Earth, including rain, snow, hail, and drizzle. It represents the most important phase of the hydrological c
Learning Objectives
- Understand the meaning and definition of humidity
- Distinguish between absolute and relative humidity
- Explain the processes of evaporation and condensation
- Identify different forms of condensation (clouds, dew, frost, fog, mist)
- Describe various forms of precipitation (rain, snow, hail)
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