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प्रश्न
What is water cycle? What is its importance?
उत्तर
Water cycle: The change of water from one form to another in nature which results in a continuous circulation of water from earth’s surface to the atmosphere and from the atmosphere back to the earth’s surface is called water cycle.
Importance of water cycle:
1. It assures a continuous supply of water to us.
2. In controlling the climatic conditions all over the world.
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संबंधित प्रश्न
Give the percentage of water in the following:
Tomatoes
Give the percentage of water in the following:
Watermelon
Write True or False for the following statement.
Tap water does not contain dissolved impurities.
Complete the statement by filling in the blanks with the correct words.
Water generates ______in hydroelectric power stations and ________in boilers for industrial applications.
(carbon dioxide/steam/heat/electricity)
Complete the statement by filling in the blanks with the correct words.
Water is added to the atmosphere by _____________and _____________.
(burning of fossil fuels/condensation of vapour/ respiration by living organisms/photosynthesis)
Explain how water plays an important role in Agriculture.
State whether the following statement is true or false. If false, write the correct statement.
If ‘X’ g. of solute is added to 100 g. of water at t°C and the solution formed is a saturated solution, then ‘X’ g. is the solubility of the solute.
Explain the meaning of the following term:
The gaseous state of water in the air
Analogy:
Napier Bridge area: ______:: Pallikkaranai: Wet land.
How do the areas covered with concrete affect the availability of ground water?
