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Precipitation Forms and types of Rain fall

Telangana Open School (TOSS) · Class 12 · Geography

Quick revision notes for Precipitation Forms and types of Rain fall — Telangana Open School (TOSS) Class 12 Geography. Key concepts, formulas, and definitions for last-minute revision.

45 questions30 flashcards5 concepts

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Key Topics to Revise

1

Humidity and Its Measurement

  • Humidity refers to the amount of water vapour present in the air.
  • There are three ways to measure humidity: Absolute, Specific, and Relative Humidity.
  • Absolute Humidity is the actual amount of water vapour in grams per cubic metre of air.
2

Evaporation and Condensation

  • Evaporation is the process by which water changes from liquid to vapour due to heat from the Sun.
  • Latent heat of vaporisation is absorbed during evaporation and released during condensation.
  • Condensation occurs when moist air cools down to its dew point.
3

Forms of Precipitation

  • Precipitation is any form of water — liquid or solid — that falls from clouds to the Earth’s surface.
  • Main forms include rain, drizzle, snow, sleet, and hail.
  • Rain consists of water droplets larger than 0.5 mm in diameter.
4

Types of Rainfall

  • There are three main types of rainfall: Convectional, Orographic, and Cyclonic.
  • Convectional Rainfall occurs in equatorial regions due to intense heating causing air to rise, cool, and condense — often daily afternoon thunderstorms.
  • Orographic Rainfall happens when moist wind rises over mountains — heavy rain on windward side, dry leeward side (rain shadow).

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Full Notes

Key Concepts

Humidity refers to the amountEvaporation is the process byPrecipitation occurs when condensed water dropletsThere are three primary typesRainfall varies greatly across the globe

Frequently Asked Questions

What are the important topics in Precipitation Forms and types of Rain fall for Telangana Open School (TOSS) Class 12 Geography?
Precipitation Forms and types of Rain fall covers several key topics that are frequently asked in Telangana Open School (TOSS) Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Precipitation Forms and types of Rain fall — Telangana Open School (TOSS) Class 12 Geography?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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