1.Describe the groundwater recharge process.
Answer:
Water from rivers and ponds, as well as rainwater, permeates the soil and fills cracks and fissures that are many feet deep. Infiltration describes the process by which water seeps into the earth. This mechanism therefore recharges the groundwater.
2.There are ten tube wells along a street with fifty houses. What long-term impacts might there possibly be on the water table?
Answer:
If 10 tube wells are positioned in a lane with fifty dwellings, groundwater can be utilised for household purposes. The depletion of groundwater causes the water table to fall.
3.You are expected to take care of a garden. How can you use water as little as possible?
Answer:
Through the use of drip irrigation, we can use less water for gardening. This method will lessen water waste because water will be applied drop by drop to the plant's roots.
4.If a statement is true, mark "T," and if it is false, mark "F."
(a)There is a significant amount more freshwater stored underground than there is in the world's rivers and lakes. (T/F)
(b) Only those who live in rural areas experience a water deficit. (T/F)
(c) The only water used to irrigate the farms comes from rivers. (T/F)
(d) The best source of water is rain. (T/F)
Answer:
a) True
b) Untrue
c)False
d) Untrue
5.Describe the causes of the decline in the water table.
Answer:
The following are some of the causes of the water table's decline:
Population growth: Population growth raises the demand for water for home use and drinking. The water table drops as a result.
Industrialization: For production purposes, industries require a lot of water. The water table drops as a result.
Agriculture: Agriculture requires a lot of water for growing crops; this results in the depletion of the water table.
6.Provide the appropriate responses in the blanks.
(a) Groundwater is obtained by people by ______ and .
(b) There are three different types of water: _______, _______, and .
(c) The earth's stratum that contains water is called .
(d) Water seepage into the earth is referred to as .
Answer:
(a) Individuals use hand pumps and tube wells to access groundwater.
(b)Ice, water, and vapour are the three different types of water.
(c) The Hydrosphere is the stratum of the earth that contains water.
(d) Water seepage into the ground is referred to as infiltration.
7.Which of the following is not to blame for the water crisis?
(I) Industries are expanding quickly.
(ii)Growing population
(iii) Prolonged rain
(iv) Poor water resource management
Answer:
The solution is heavy rainfall, option (iii).
Explaination:
Rain is liquid precipitation: water falling from the sky. Raindrops fall to Earth when clouds become saturated, or filled, with water droplets.
8.Select the appropriate choice. All of the water
I remains constant throughout the world's lakes and rivers.
(i)Under the ground,
(ii) nothing changes.
(iii) remains constant throughout the world's oceans and seas.
(iv)the world remains unchanged
Answer:
The world stays the same, option (iv), is the correct response.
9.Draw a diagram that depicts the water table and groundwater. Mark them.
Answer: