Groundwater Questions

Water is one of the essential resources found on Earth. Below the Earth’s surface, a vast water resource is seen, referred to as groundwater.

Groundwater underlies the Earth’s surface almost everywhere, beneath mountains, hills, deserts, and plains. Groundwater constitutes 22% of water below the surface land.

The water cycle defines the continuous movement of water above and below the Earth’s surface. The groundwater contains:

• Soil moisture
• Permafrost
• Immobile water in shallow permeability bedrock
• Deep geothermal or oil formation water
• The saturated groundwater system enters slowly into lakes, streams, and oceans

Read more: Groundwater

Important Groundwater Questions with Answers

1. What are the sources of groundwater?

The sources of groundwater are rivers, natural springs, aquifers, rain, and snow.

2. Define groundwater.

Groundwater is defined as the source of freshwater found below the earth’s surface.

3. Groundwater cannot fill the porous spaces in soil, sediment, and rocks.

a) TRUE

b) FALSE

Answer: FALSE

Explanation: Water under the surface of the earth, fills the porous spaces in soil, sediment, and rocks.

4. In which zones is groundwater found?

Groundwater is found in the unsaturated zone and saturated zone.

5. What is an aquifer?

An aquifer is a body of saturated rock through which water can quickly move.

6. Choose YES or NO: Can groundwater be recharged naturally?
a) YES
b) NO

Answer: a) YES

Explanation: The groundwater can be recharged naturally by rain, snowmelt, and surface water.

7. How is groundwater polluted?

Groundwater is polluted using septic tanks, leaky underground gas tanks, landfills, sewage systems, wastewater, and mines.

8. Does the overuse of fertilisers and pesticides contribute to groundwater pollution?

Yes, when the fertilisers and pesticides enter the groundwater, it leads to groundwater pollution.

9. The upper level of an underground surface is known as _____.

1. Water trunk
2. Water desk
3. Water table
4. Water tilt

Answer: c) Water table.

Explanation: The upper level of an underground surface is known as the water table.

10. What affects groundwater contamination?

Groundwater contamination is affected by sorption, biological degradation, and advection.

Practice Questions

1. Explain the properties of groundwater.
2. What is a water table?
3. Does gravity affect the existence of groundwater?
4. Define hydrogeology.
5. List the applications of groundwater.

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