Advertisements
Advertisements
प्रश्न
What is water cycle? What is its importance?
Advertisements
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:
Rice and wheat grains
Give the percentage of water in the following:
Tomatoes
Give the importance of water in life processes
Give the importance of water in household purpose
State whether the following statement is true or false. If false, write the correct statement.
Water finds application as a means of transporting goods.
State whether the following statement is true or false. If false, write the correct statement.
Purification of water is carried out to remove – dissolved gases e.g. carbon dioxide and dissolved minerals like magnesium salts.
Match the statements in List I, 1-10 with their correct answer in List II, A to J.
| List I | List II |
| 1. Sodium carbonate and water | A: Seawater |
| 2. Chemical used in sedimentation during purification of water | B: The preferred place for an organism |
| 3. vapourisation | C: Liquid state |
| 4. Kerosene and water | D: Aqueous solution |
| 5. A solution which can dissolve more of solute at a given temperature | E: Dissolved gases and minerals |
| 6. Water as a habitat for marine life | F: Unsaturated solution |
| 7. A water-borne disease | G: Immiscible mixture |
| 8. Existence of water between 0°C and 100°C | H: Liquid to a gaseous state |
| 9. Taste in water is due to | I: Dysentery |
| 10. The most impure form of water | J: Alum |
Name the following
The natural process by which circulation of water takes place from the earth’s surface to the atmosphere and back to the earth’s surface.
Which of the following activity does not involve use of water?
Why do wet clothes placed on a clothes line get dry after some time? Explain.
