Precipitation Forms and types of Rain fall — Flashcards

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Humidity refers to the amount of water vapour present in the air. It varies from place to place and time to time. For example, coastal areas have higher humidity than deserts. The air can hold more mo…

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Absolute humidity is the actual amount of water vapour present in a given volume of air. It is measured in grams of water vapour per cubic metre of air (g/m³). For instance, if 1 m³ of air contains 10…

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Specific humidity is the weight of water vapour per unit weight of air, expressed in grams of water vapour per kilogram of air (g/kg). For example, air at 30°C can hold up to 26 g/kg of moisture, whil…

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Relative humidity (RH) is the ratio of the amount of water vapour present in the air to the maximum amount it can hold at that temperature, expressed as a percentage. For example, if air contains 9 g …

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Warm air has higher kinetic energy, which allows it to hold more water vapour. As temperature increases, the air's capacity to retain moisture increases. This is why tropical regions have high humidit…

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Dew point is the temperature at which air becomes saturated with water vapour, leading to condensation. When air cools to its dew point, relative humidity reaches 100%. For example, dew forms on grass…

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Dew forms when water vapour condenses into liquid droplets on cool surfaces when the dew point is above freezing (0°C). Frost forms when the dew point is at or below 0°C, causing water vapour to direc…

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Ideal conditions for dew formation include clear skies, calm air, high relative humidity, and long, cold nights. These allow the ground to cool rapidly, reaching the dew point and enabling condensatio…