What is Water Harvesting? - Science


What is water harvesting?



Water harvesting refers to all the processes and steps that are taken for scientific conservation of fresh water.

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2013-2014 (March) All India Set 3


List two advantages associated with water harvesting at the community level.

Compare the above system with the probable systems in hilly/mountainous areas or plains or plateau regions

What is rainwater harvesting?

Name the most common practice of recharging ground water.

The pH of a sample of water collected from a river is found to be in the range of 3.5 to 4.5. The most likely reason for this is the waste being discharged into the river from a :
(a) soap and detergent manufacturing factory
(b) car battery manufacturing factory
(c) alcohol manufacturing factory
(d) plastic cups moulding factory

Groundwater will not be depleted due to :
(a) process of afforestation
(b) establishing thermal power plants
(c) process of deforestation
(d) cultivation of high yielding varieties of crops

List four advantages of conserving water in the form of ground water.

 Rooftop rainwater harvesting. 

Why are South Indian rivers not ideal for the inland water transport? 

"Traditional harvesting system is a useful system to conserve and store water." Highlight the importance of this system with two examples.

Answer the following question.
Analyze the importance of 'rainwater harvesting'.

What is rainwater harvesting?

Describe the method of rainwater harvesting.

Water becomes ice on ______.

Write the advantages of rainwater harvesting.

About 30% of the fresh water is found in?

The fresh water available on earth is only 3%. We cannot increase the amount of water. In that case, how can sustain the water level?

Why is it important to conserve water?

Surangams are the age-old concept of water harvesting in ______ 

The Tehri Dam is constructed on River ______ 

______ is the only way to conserve rainwater.

Rainwater harvesting was launched by the Tamil Nadu government in 2011.

______ of the total freshwater is frozen as ice caps and glaciers.

Agriculture consumes around ______ of the available freshwater.

March 22 is observed as ______.

Define – Freshwater.

Write the advantages of Wastewater treatment.

Write a short note on Farm Ponds.

______ water is obtained through open wells, tube wells or hand pumps, springs.

______ of Asia’s largest rivers flow from the Himalayas.

Volume of liquid is measured by ______.

A larger portion of water is ______ % of the total available fresh water in frozen state.

Water level in the reservoirs is measured in ______.

How is 3% of freshwater distributed?

If the total water on earth be 100% the percentage of freshwater is ______.

Which one is not an example of groundwater?

  1. Locate and name the water reservoirs in Figures (a) and (b).
  2. Which has an advantage over the other and why?



The jumbled word is given here. Write the correct form of each word.


Water is very precious for all living beings. What will happen in future if we do not save water now?

World Water Day is celebrated on ______.

Which one of the following is not an advantage of farm ponds?

The theme for World Water Day 2018 is ______.

Match the following:

Secondary Treatment Disinfection
Grey water Floatation
Primary Treatment Reusable wastewater
Tertiary Treatment Sedimentation

Sublimation is the conversion of solid into a liquid.

Nicobar island is one of the biodiversity hotspots in India.

Point out the importance of water conservation.

What is grey water?

What are all the strategies used to support water conservation?


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