Answer the following questions

A. Answer the following questions briefly in one or two sentences.

1. What makes water one of the most powerful and wonderful things on earth?

Water is the elixir of life. If there is no water, there won't be any living organism or vegetation on the earth. It makes water one of the most powerful things on earth. Water shapes the course of the earth’s history.

2. How does water help in the formation of fertile lands?

Water carries silt or finely divided soil in suspension. The land which is formed by silt is proved to be fertile.

3. How does soil erosion happen and what are its main causes?

Sudden heavy rain causes flood. It washes away the top soil. The slope of the land, removal of vegetation and existence of ruts are the causes of soil erosion.

4. What are some measures that are used to prevent soil erosion?

The terracing land, afforestation, the practice of contour cultivation and construction of bunds are some measures to prevent soil erosion.

5. How, according to Sir C. V. Raman, can rainwater as well as the water of rivers be prevented from going to waste?

The systematic planting of suitable trees can prevent rain water from going to waste.

B. Answer the following in about 80-100 words.

1. How does C.V. Raman show that water is the real elixir of life?

Title : Water - The Elixir of Life

Author : Sir C.V. Raman

Theme : "Waste not, Want not"

According to Sir C.V. Raman, water is the elixir of life. In the ancient times civilization developed near the rivers. Water plays an important role in life. Water adds beauty to the country side. Water carries slit and makes the land fertile. Water is the basis of all life. It is necessary for animal life and growth of plants and trees. Water is the commonest of liquids. But it is the uncommon of liquids with amazing properties. They are responsible for maintaining human, animal and plant life. We can produce hydroelectric power from water. Water ways is the cheapest mode of transport. Thus without water life is impossible.

“Make hay while the sun shines”

2. Water exists in all plant and animal forms­– Explain.

Title : Water - The Elixir of Life

Author : Sir C.V. Raman

Theme : Water exists in all plant and animal forms

According to Sir C.V. Raman, water is the basis of life. Every animal or plant contains a large proportion of water in its body. All physiological activities are possible only when the liquid water play its essential part. Water is necessary for animal iife. It is equally essential for plants and trees to grow. Only the quantity necessary varies with species. Thus existence of every animal or plant is possible only with water. Therefore, it is clear that water is the elixir of all life.

“No rain, no gain; No rain, more pain”

3. Life cannot exist on earth without water – Explain.

Title : Water - The Elixir of Life

Author : Sir C.V. Raman

Theme : No life is possible without water

Water is the elixir of life. Water is the basis of life. This common substance plays a vital role in the life of human, animal and plant. It is the most powerful thing on the earth. It has the key role in the drama of life. Every animal or plant contains a large proportion in its body. Physiological activity is which the water plays the essential part. Water is necessary for animal life. It is necessary for the growth of plant and tree. Water is essential in human life. Thus it is clear that water exists in all life and life cannot exist on earth without water.

“Where there is water, there is life”

COMMON PARAGRAPH

PARAGAPH FOR TOPPERS:

Synopsis:

• Introduction

• Nile Valley

• South India - The land of rainfed tanks

• Soil erosion

• Prevention of soil erosion

• Civilized Forests

• Conclusion

Introduction:

Water is the commonest of all liquids. It is the life giver of all the creatures on earth. The divine Amrita is an imaginary one. But the true elixir of life is water. Sir C.V. Raman brings out the importance of water.

Nile Vaiiey:

The Nile Valley is fertile because of the water of the river Nile flowing into it. Egypt in fact, was made by its river. On the one side was a sea sand. On the other side was the most fertile land. An ancient civilization was created and is sustained by the Nile.

South India - The land of rainfed tanks:

The rainfed tanks are common in South India. But they are not maintained. These tanks play an important role in agriculture. Water carries silt or finely soil in suspension. This gives colour to water. The colour of the water changes from the muddy red and green and finally to the blue of the deep sea.

Soil erosion:

The main cause of soil erosion is sudden burst of heavy rain. The result is large run of surplus water. Sudden heavy rain causes flood. It washes away the soil. The slope of the land, removal of vegetation and existence of ruts are the causes of soil erosion.

Prevention of soil erosion:

Soil erosion can be prevented by terracing of land, construction of bunds to check the flow of water, the practice of contour cultivation, the planting of appropriate types of vegetation.

Civilized Forests:

Civilization are formed only in the river beds. The planting of suitable trees in all areas is called civilized forests. They would check soil erosion. Civilized forests help in preventing soil erosion and conserve water.

Conclusion:

Water is the most common of liquids. It is responsible for bearing animal and plant life. We must conserve water and use it carefully.

PARAGRAPH FOR AVERAGE STUDENTS:

Title : Water - The Elixir of Life

Author : Sir C.V. Raman

Theme : No life is possible without water

Water is the commonest of all liquids. It is the life giver of all the creatures on earth. Water is very essential for plants and animals. Rivers are called as the cradles of civilization. The rain water is filled in rainfed tanks. The rainfed tanks are common in South India. But they are not maintained. Water carries silt or finely divided soil in suspension. This gives colour to water. The main cause of soil erosion is sudden burst of heavy rain. Soil erosion can be prevented by many ways. Preventing soil erosion and afforestation conserve water. Civilization are formed only in the river beds. We must conserve water and use it carefully.

PARAGRAPH FOR LATE BLOOMERS:

• Water is the commonest of all liquids.

• It is the life giver of all creature.

• Rivers are called as the civilization

• Plants and animals have water in their bodies.

• The rain water is filled in rainfed tanks.

• Water is essential for life.

• It helps to maintain the food chain.

• We must conserve water and use it carefully.