NCERT Class VII Science Solutions: Chapter 16-Water: A Precious Resource Part 5

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LONG ANSWER QUESTIONS

Question 23:

Complete the following chart the boxes marked (a) to (e).

As showing in images is a complete the following chart the boxes (Q)

Complete the Following Chart the Boxes (Q)

As showing in images is a complete the following chart the boxes (Q)

Answer:

As showing in images is a complete the following chart the boxes (A)

Complete the Following Chart the Boxes (A)

As showing in images is a complete the following chart the boxes (A)

Question 24:

What is ground water? What are the sources of water which are fed by ground water?

Answer:

Water present underground; well, lake, pond, spring, hand pump, etc.

Question 25:

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

Answer:

Water is needed for various life activities. If we continue the misuse of water and do not conserve it, the groundwater level will be depleted. This may result into various consequences like:

  1. Lowering of the water table excessive pumping can lower the groundwater table.

  2. Reduced surface water supply groundwater and surface water are connected. When groundwater is over used, the lakes, streams and rivers connected to groundwater can also have little supply.

  3. Loss of plants from land we fully depend on the plants for food directly. Plants need water to prepare their food. If there will be scarcity of water on earth, the plants will be unable to prepare their food. This in turn will lead to the end of the life because world without plants means on food, no oxygen, not enough rain and other innumerable problems.