NCERT Class VII Science Solutions: Chapter 16-Water: A Precious Resource Part 1

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Question 1:

Mark ‘T’ if the statement is true and ‘F’ if it is false:

  1. The freshwater stored in the ground is much more than that present in the rivers and lakes of the world. (T/F)

  2. Water shortage is a problem faced only by people living in rural areas. (T/F)

  3. Water from rivers is the only source for irrigation in the fields. (T/F)

  4. Rain is the ultimate source of water. (T/F)

Answer:

  1. The freshwater stored in the ground is much more than that present in the rivers and lakes of the world. (True)

  2. Water shortage is a problem faced only by people living in rural areas. (False)

  3. Water from rivers is the only source for irrigation in the fields. (False)

  4. Rain is the ultimate source of water. (True)

Question 2:

Explain how groundwater is recharged?

Answer:

The rainwater and water from other sources such as rivers and ponds seeps through the soil and fills the empty spaces and cracks deep below the ground. The process of seeping of water into the ground is called infiltration. By the process of infiltration, groundwater gets recharged.

As showing in images is a groundwater is recharged

Groundwater is Recharged

As showing in images is a groundwater is recharged

Question 3:

There are ten tube wells in a lane of fifty houses. What could be the long term impact on the water table?

Answer:

Ten tube-wells are too much for a lane of fifty houses, this can lead people to mindlessly exploit the groundwater. This can lead to depletion of the water table in the long run.

As showing in images is a reasult for wells

Reasult for Wells

As showing in images is a reasult for wells