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प्रश्न
What is water cycle? What is its importance?
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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.
APPEARS IN
संबंधित प्रश्न
Give the percentage of water in the following:
Eggs
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)
Complete the statement by filling in the blank with the correct words.
Water fit for human consumption and drinking purposes is called ____________.
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.
State whether the following statement is true or false. If false, write the correct statement.
Respiration uses up water from the atmosphere.
State whether the following statement is true or false. If false, write the correct statement.
Sodium carbonate and sodium sulphate do not form an aqueous solution.
Name two gases which are insoluble in water.
Analogy
Ground water : ______ :: Surface-water : lakes
Why do wet clothes placed on a clothes line get dry after some time? Explain.
How do the areas covered with concrete affect the availability of ground water?
