Class 7th Science NCERT Chapter 16
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Topics to study from the chapter "Water: A Precious Resource" are:
1. Importance of Conserving Water:
– Message from water day posters.
2. Water Shortage Issues:
– Acute shortage, queues for water, protests.
3. Water Scarcity:
– Global concern, estimates of future water scarcity.
4. Available Water Sources and Quantity:
– Earth's water distribution, freshwater availability, human usable water estimation.
5. Forms of Water:
– Solid, liquid, and gaseous forms of water on Earth.
6. Water Cycle:
– Processes involved in the water cycle, cycling of water among forms.
7. Groundwater as an Important Source:
– Groundwater recharge, aquifers, pumping water from underground sources.
8. Depletion of Water Table:
– Impact of drawing water from underground sources on the water table7.
What amount of water is recommended by the United Nations for drinking, washing, cooking, and maintaining proper hygiene per person per day?
Why is the day 'World Water Day' celebrated?
What percentage of the earth's surface is covered with water?
What forms can water be found in at any given time on earth?
What is the process called when rainwater and water from other sources seep through the soil and fill the empty spaces deep below the ground?
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