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Measurement of Water

Maharashtra Board · Class 10 · Water Security

Quick revision notes for Measurement of Water — Maharashtra Board Class 10 Water Security. Key concepts, formulas, and definitions for last-minute revision.

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Key Topics to Revise

1

1. Water cycle and the need for measurement

  • All groundwater originates from the water cycle.
  • Measurement is needed for vapour, rain, flowing water, stagnant water, and seeping water.
  • Proper measurement helps in preserving water resources.
2

2. Rainfall measurement

  • The device used to measure rainfall is called a rain gauge.
  • A rain gauge is a cylindrical flat-bottom measuring cylinder with a funnel top.
  • The funnel mouth diameter is 127 mm and the edge height is 110 mm.
3

3. Evaporation measurement

  • Evaporation rate is measured by an evaporator.
  • The evaporator is a shallow rounded iron vessel with a diameter of 1.2 m and depth 30 cm.
  • It is painted white on both sides.
4

4. Surface flow measurement

  • Flowing water can be measured by orifices, meter gates, wears, flumes, and V-notch.
  • The V-notch method uses a wooden or iron plank with a V-shaped triangular notch in the center.
  • The angle of the notch is 90 degrees.

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Full Notes

Key Concepts

A rain gauge is usedAn evaporator measures evaporationFlowing water is measured using instrumentsZirpa is used to measure seepageStored water is measured by stationary

Frequently Asked Questions

What are the important topics in Measurement of Water for Maharashtra Board Class 10 Water Security?
Measurement of Water covers several key topics that are frequently asked in Maharashtra Board Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Measurement of Water — Maharashtra Board Class 10 Water Security?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision 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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