Tag: groundwater and depletion of water table

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Questions Related to groundwater and depletion of water table

Multiple choice social science water: a precious resource water table groundwater and depletion of water table the water cycle

Deplaction of the water table is due to which of the following resion?

  1. insufficient rain fall

  2. industrial activities

  3. excess of tube wells

  4. all of them
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All the given reasons as insufficient rainfall, industrial activities and excessive use of ground water are responsible for the depletion of water table. 

Multiple choice social science water: a precious resource water table groundwater and depletion of water table the water cycle

The water table is:

  1. the upper level of an underground surface in which the soil or rocks are permanently saturated with water.

  2. the upper level of an underground surface in which the soil or rocks are unsaturated with water.

  3. the lower level of an underground surface in which the soil or rocks are permanently saturated with water.

  4. the lower level of an underground surface in which the soil or rocks are unsaturated with water.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The water table is also known as ground water table in which water seeps into the ground and move downward till it reaches the stage of saturation. The velocity at which water flows underground depends on the permeability of the rocks.

Multiple choice social science water: a precious resource water table groundwater and depletion of water table the water cycle

The water table fluctuates:

  1. by climatic variations

  2. by the amount of precipitation used by vegetation

  3. by withdrawing excessive amounts of water from wells

  4. all of them
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The water table is also known as ground water table in which water seeps into the ground and move downward till it reaches the stage of saturation hence it fluctuates by changes in seasons, precipitation or by withdrawing a large amount of water. 

Multiple choice social science water: a precious resource water table groundwater and depletion of water table the water cycle

Which of the following does not cause a depletion in the water table of a place?

  1. Constructing factories and houses

  2. Making concrete roads and floors

  3. Deforestation

  4. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All the three options cause depletion in water table in a place as first and second case consume water and third case decrease water retention of soil and also decrease rainfall.

So, none of these is the correct option.                     

Multiple choice social science water: a precious resource water table groundwater and depletion of water table the water cycle

What happens to the water table of a place having droughts for a long period of time?

  1. It gets higher because of continuous evaporation and flow.

  2. It gets lower because of continuous evaporation and flow

  3. It gets replenished continuously

  4. can't say anything
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The water table is also called as groundwater table. It's recharge depend on the recharge from infiltration of precipitation so when a drought hit the land surface it affects the water level below ground. This result in falling groundwater level due to evaporation and flow.

So, the correct option is 'it gets lower due to continuous evaporation and flow'.

Multiple choice social science water: a precious resource water table groundwater and depletion of water table the water cycle

A man digging the ground near a water body found that the soil was moist.As he kept digging deeper and deeper he reached a level where all the spaces between particles of soil and gaps between rocks were filled with water. The upper limit of this layer is called:

  1. water level

  2. ground water

  3. water table

  4. water limit
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The upper limit of this layer where water is present between particles of soil and gaps between rocks is called water table and water below the layer is called groundwater.

Multiple choice social science water: a natural resource water table groundwater and depletion of water table the water cycle

The process of seeping out water into the ground is called:

  1. evaporation

  2. infiltration

  3. transpiration

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The process of seeping out water into the ground is known as infiltration.

 It is process by which water goes into the ground resulting in increase in water table.
The process is not evaporation as it means evaporating the water present on the ground. 
The process is not transpiration as it is the process by which moisture is carried through plants from roots to small pores on the underside of leaves.

Multiple choice social science water: a natural resource water table groundwater and depletion of water table the water cycle

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

  1. a reservoir

  2. an aquifer

  3. a hard water

  4. a well water
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand or salt). Ground water can be extracted using a water well.

Multiple choice social science water: a natural resource water table groundwater and depletion of water table the water cycle

Water in the aquifers can be usually pumped out with the help of:

  1. handpumps

  2. drilling

  3. tubewell
  4. both $A$ and $C$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

When a water-bearing rock readily transmits water to wells and springs, it is called an aquifer. Wells can be drilled into the aquifers and water can be pumped out with handpump or tubewell.