Biogeochemical Cycles
Chapter Name : Natural Resources |
Sub Topic Code : 103_09_14_05_01 |
Topic Name : Biogeochemical Cycles |
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Sub Topic Name : The Water-Cycle |
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Introduction
The process by which water evaporates and falls back on the land as rain and later flows into the seas via the rivers is termed as water cycle.
Pre-Requisites:
Mechanism of formation of rain.
Real Life Question:
We have studied that water gets evaporated from the seas and oceans. Then how do these oceans and seas never get dried up but have plenty of water?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Water cycle | The process by which water gets evaporated from the water bodies and falls back on the land as rain and later flows back to the seas through the river is termed as water cycle. |
| Underground water | All the water that falls back on the land does not goes to the sea. Some of it seeps into the soil as groundwater which comes to the surface as springs or brought to the surface use in form of wells. |
| Use of water | By various terrestrial animals and plants for carrying out various life processes. |
| Mineral flow in seas | Water flows on the rocks containing minerals and these minerals solubilize in water and this water flows to the water bodies. These minerals are used by marine organisms. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Encyclopedia and internet | Try to find out the different types of natural springs such as hot water or cold water springs found in different places on the Earth. |
Real life uses :
The water is revived continuously in the water bodies through the water cycle
Places to visit :
Water springs, wells, etc.
Practical examples around us
| Examples | Explainations |
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What you learn in Theory:
The process of water cycle and seepage of rain water into the soil as underground water forming springs.
What you learn in Practice:
How rain is formed and flow of minerals and other essential components in the water bodies for survival of marine life through the rain water.