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प्रश्न
What is rain water harvesting? List out the advantages of rain water harvesting.
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उत्तर
‘Rainwater harvesting’ is the process of collecting and storing rainwater for future use. Rainwater can be collected in natural reservoirs or artificial tanks. Roof top harvesting is also a type of rainwater harvesting. The rainwater on the top of the building is collected and passed into the ground through pipes.
Water passing through the pipes enters the pit which consists of gravels and Coarse sand. As it passes impurities are filtered and stored as ground water.
Advantages of rain water harvesting:
- It increases the ground water level
- It can be used for agriculture
- It increases the availability of water for living things.
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संबंधित प्रश्न
Write any two water bodies in your area. ____, ____.
Which of the following processes add water vapour to the atmosphere?
- Transpiration
- Precipitation
- Condensation
- Evaporation
Observe the given graph carefully and answer the questions.
- What percentage of water is seen in fish?
- Name the food item that has maximum amount of water in its content.
- Name the food item that has minimum amount of water in its content.
- Human body consists of about ______ percentage of water.
- Specify the food item that can be consumed by a person when he/she is suffering from dehydration.
The process of changing water vapour into water is called ______.
Maximum surface water is stored in lakes.
Place the following statements in a proper order to form a meaningful paragraph.
- Which in turn decreases the seepage of rain water into the ground.
- This decreases the open areas like parks and playgrounds.
- Increasing population create demand for construction of houses, shops, offices, roads and pavements.
- This results in depletion of water table and creates scarcity of more water.
Paheli wrote a food chain in the following way:
frog → eagle → insects → grass → snake
The chain is not in the correct order. Help her to write the food chain correctly.
Explain the three stages of the water cycle.
Most of the water that falls on the land as rain and snow, sooner or later goes back to a sea or an ocean. Explain how it happens?
Explain the process of rooftop rain water harvesting with the help of a suitable diagram.
