Water: A Precious Resource Class 7

Which of the following does not allow water to seep in easily?

• grass

• pukka floor

• mud

• all of the above

The process of seeping of water into the ground is called in

• Reservoir

• Groundwater

• Infiltration

• aquifer

Water from rivers is the only source for irrigation in the fields.

• True

• False

At places the groundwater is stored between layers of hard rock below the water table. This is known as

• ground water

• hard water

• aquifer

Which year is considered as the international year of fresh water ?

• 2003

• 1998

• 2009

• 2015

Depletion of water table is due to

• increase in population

• scanty rainfall

• Industrialization and agriculture

• all of these

Water table can be raised by

• making dams

• making lakes

• rain water harvesting

• crop harvesting

People obtain groundwater through________ and ________.

(a)  

Rain is the ultimate source of water.

• True

• False

The total water

• i) in the lakes and rivers of the world remains constant.

• ii) under the ground remains constant.

• iii) in the seas’and oceans of the world remains constant.

• iv) of the world remains constant.