Work of Ground Water and Associated Landforms — Chapter Summary
ICSE · Class 11 · Geography
Summary of Work of Ground Water and Associated Landforms for ICSE Class 11 Geography. Part of the ICSE Class 11 Geography syllabus.
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Overview
Ground water is a major part of the water cycle. About one-third of rain water sinks into the ground through cracks and joints in rocks, and it later appears again as springs, wells and geysers. The chapter explains how rock properties such as porosity and permeability control underground water, how
Key Concepts
A part of rain water sinks
A part of rain water sinks into the ground through cracks and joints of rocks. This water is stored below the surface and may later emerge as springs,
Porosity is the water
Porosity is the water-holding capacity of a rock because of its pore spaces. Permeability is the capacity of a rock to allow water to pass through it.
The water table is the upper
The water table is the upper surface of ground water saturation. It rises under hills and roughly follows the relief of the land. Above it are zones o
An aquifer is an underground layer
An aquifer is an underground layer of porous and permeable rock that can hold water and allow it to pass through. Typical aquifer rocks include sand a
An aquiclude stores water but cannot
An aquiclude stores water but cannot transmit it. An aquitard slows down water movement but does not completely stop it.
Learning Objectives
- Understand how underground water forms from rain water
- Distinguish between porosity, permeability, aquifer, aquiclude and aquitard
- Explain the water table and its zones of saturation
- Describe types of wells, springs and artesian wells
- Identify the conditions needed for artesian flow
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Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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