Shape Shape Shape Shape
Water: A Wonder Liquid
Chapter Name : Natural Resources
Sub Topic Code : 103_09_14_03_01
Topic Name : Water: A Wonder Liquid
Sub Topic Name : Water: A Wonder Liquid
Introduction

Water occupies a large surface area on the earth. All life forms require water for its survival.

Pre-Requisites:

• Percentage of saline and fresh water on the earth. • Water bodies having saline and fresh water.

Real Life Question:

Why is water so necessary? Can organisms survive without water?

Key Words / FlashCards
Key Words Definitions (pref. in our own words)
Presence of water on earth Water found in seas and oceans is saline. Fresh water is found frozen in ice caps at poles and snow covered mountains. The underground water and water in rivers, lakes and ponds is also fresh.
Organisms require water To carry out all cellular processes and various reactions those take place in the body. Substances are transported from one part to another in dissolved form and hence organisms maintain water levels in body to stay alive.
Terrestrial life forms They require fresh water as their bodies cannot tolerate or get rid of the high amounts of dissolved salts in saline water.
Diversity of life The availability of water decides the diversity of life in a particular area along with other factors such as temperature and nature of soil.
Learning aids / Gadgets
Gadgets How it can be used
Encyclopedia and internet Try to find various water harvesting techniques used to save water in various places such as farms, garden, ground water harvesting etc.
Real life uses :

Life on earth cannot sustain without water.

Places to visit :

Farms, garden, etc.

Practical examples around us
Examples Explainations
What you learn in Theory:

Presence of saline and fresh water in different water bodies and the importance of water in life for survival.

What you learn in Practice:

How water is important for survival.

× notification.success

This alert box could indicate a successful or positive action.

× There are Pending MCQs

You have Initiated to attend MCQs, But that is not yet completed, you can continue from where you left