NCERT - 7 - Science :: Water: A precious resource

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Go To: NCERT-Science-Grade 7

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[Contributor - Anu Nived]

Objective: To teach the students about the importance of water

Subtopics to be covered:

  1. Forms of Water and Sources of Water
  2. Water Table and its depletion
  3. Water Management

Learning Outcome:

  1. Students know that sunlight is a mix of different colours
  2. They know about the images formed by concave and convex lenses

[Contributor - Kripa S]

(Source - Smart Learning for All)

https://www.youtube.com/watch?v=9pqh6tlEOhs (English - water cycle)

(Source - Smart Learning for All)

https://www.youtube.com/watch?v=93BqLewm3bA&t=40s (English -water pollution)

[Contributor - Arshea Bimal, Kripa S]


1.You are a water detective in your school. You have a team of six members. Survey the campus and

make a note of the following:

(a) Total number of taps

(b) Number of taps leaking

(c) Amount of water wasted due to leakage

(d) Reasons of leakage

(e) Corrective measures taken

2. http://www.arvindguptatoys.com/toys/raingauge.html


[Contributor - Fathima Nazar]

Term Transliterated Term Translated Term
Aquifer अक्वीफर जलभर , जलभृत
Depletion डिप्लीशन अवक्षय, रिक्तिकरण
Drip irrigation ड्रिप इरीगेशन बूंद सिंचाई व्यवस्था
Groundwater ग्राउंडवाटर भौम जल
Infiltration इंफिल्ट्रेशन अंतः स्यंदन
Recharge रिचार्ज पुनः पूर्ति
Water harvesting वाटर हार्वेस्टिंग जल संचयन
Water table वाटर टेबल जल स्तर
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