Lesson: Water: A Precious Resource

## Question: 1

Which of the following does not show water shortage?

(a)      Taps running dry.

(b)      Long queues for getting water.

(c)      Marches and protests for demand of water.

(d)      A family gets three buckets of water per person per day.

(d)

# Question: 2

Seas and oceans are full of water on earth. However, a very small percentage of water present on earth is available for us. This percentage is roughly

(a)      0.006%.

(b)      0.06%.

(c)      0.6%.

(d)      6%.

(a)

# Question: 3

Which of the following are not the liquid forms of water?

(i)             Snow

(ii)           Lake water

(iii)         River water

(iv)         Water vapour

(v)           Ice

Choose the correct combination from the options below.

(a)   (i), (iv) and (v)

(b)    (i) and (ii)

(c)   (ii) and (iii)

(d)   (iv) only

(a)

# Question: 4

A man digging the ground near a water body found that the soil was moist. As he kept digging deeper and deeper, he reached a level where all the spaces between particles of soil and gaps between rocks were filled with water. The upper limit of this layer is called:

(a)   Water level

(b)   Water table

(c)   Ground water

(d)   Water limit

(b)

# Question: 5

Which of the following is a way to use water economically?

(a)   Construction of bawris

(b)   Rainwater harvesting

(c)   Drip irrigation

(d)   Infiltration

(c)

# Question: 6

On which of the following day is World Water Day observed?

(a)   22 March

(b)   14 November

(c)   2 October

(d)   21 December

(a)

# Question: 7

The amount of water recommended by the United Nations for drinking, washing, cooking and maintaining proper hygiene per person per day is a minimum of

(a)   5 liters

(b)   15 liters

(c)   30 liters

(d)   50 liters

(d)

# Question: 8

“Every Drop Counts” is a slogan related to:

(a)         Counting of drops of any liquid.

(b)         Counting of water drops.

(c)         Importance of water.

(d)         Importance of counting.

(c)

# Question: 9

Water cycle does not involve which of the following?

(a)           Evaporation

(b)          Condensation

(c)           Formation of clouds

(d)          Rainwater harvesting

(d)

# Question: 10

Which of the following inhibits the seepage of rainwater into ground?

(a)           A pukka floor

(b)          Playground

(c)           Grass lawn

(d)          Forest land

(a)

## Question: 11

State whether the following statements are True or False. If false, write the correct statement.

(a)           Water vapour is the gaseous form of water.

(b)          Ice is solid whereas snow is the semi-solid form of water.

(c)           Ocean water cannot be used for domestic purposes.

(d)          Rapid growth of industries is one of the causes for water shortage.

## Solution:

(a)           True

(b)          False. Snow is the solid form of water.

(c)           True

(d)          True

# Question: 12

Some definitions are given below which can be corrected by changing one word. Correct them.

(a)            Aquifer is ground water stored between layers of hard rock above the water table.

(b)            The process of evaporation of water in the ground is called infiltration.

(c)            The evaporation of water from oceans and its arrival back into oceans is called vapour cycle.

## Solution:

(a)            Aquifer is ground water stored between layers of hard rock below the water table.

(b)            The process of seeping of water in the ground is called infiltration.

(c)            The evaporation of water from oceans and its arrival back into oceans is called water cycle.

# Question: 13

What is the source of water in each of the following?

(a)            Wells

(b)            Ground

(c)            Atmosphere

## Solution:

(a)            Wells: Ground water

(b)            Ground: Rain water

(c)            Atmosphere: Evaporation

# Question: 14

State whether the following statements are ‘True’ or ‘False'. If false, give the correct statement.

(a)            The process of seeping of water into ground is called filtration.

(b)            51% of the earth’s surface is covered with water.

(c)            Year 2003 was observed as the International Year of Freshwater.

(d)            Snow and ice both are solid forms of water.

## Solution:

(a)            False. The process of seeping of water into the ground is called infiltration.

(b)            False. Nearly 71% of the earth’s surface is covered with water.

(c)            True

(d)            True

## Question: 15

Fill in the blanks in the given passage.

The rainwater and ____________ from other sources such as rivers and ponds seeps through the ___________ and fills the empty spaces and cracks deep below the ground. The process of seeping of water into the ground is called__________.

## Solution:

The rainwater and water from other sources such as rivers and ponds seeps through the soil and fills the empty spaces and cracks deep below the ground. The process of seeping of water into the ground is called infiltration.

# Question: 16

Fill in the blanks and complete the story selecting words below.

Cold, demand, leaders, dry, hot, scarcity, workers, wet, oceans, harvesting, rivers

Rajasthan is a _________ and dry place. The challenge of natural_______ of water was met by a successful experiment. A band of social ________ had transformed a_________ area into a green place. They have revived five dried-up ________ by constructing water ___________ structures.

## Solution:

Rajasthan is a hot and dry place. The challenge of natural scarcity of water was met by a successful experiment. A band of social workers had transformed a dry area into a green place. They have revived five dried-up rivers by constructing water harvesting structures.

# Question: 17

Place the following statements in a proper order to form a meaningful paragraph.

(a)           Which in turn decreases the seepage of rain water into the ground

(b)           This decreases the open areas like park, and playgrounds.

(c)           Increasing population create demand for construction of houses, shops, offices, roads and pavements.

(d)           This results in depletion of water table and creates scarcity of more water.

## Solution:

(c)            Increasing population create demand for construction of houses, shops, offices, roads and pavements.

(b)          This decreases the open areas like park, and playgrounds.

(a)           Which in turn decreases the seepage of rain water into the ground.

(d)          This results in depletion of water table and creates scarcity of more water.

# Question: 18

How can you observe the three forms of water in (i)nature and (ii) at home?

## Solution:

(i)             Nature- water, water vapour, snow

(ii)           Home- water, steam, Ice

# Question: 19

Complete the given table.

# Question: 20

Match Column I with Column II.

# Question: 21

A list of jumbled words is given here. Write the correct form of each word.

(a) WASHFERRET (b) CHARREGE (c) QUIFERA (d) WOSN

(a)   Freshwater

(b)   Recharge

(c)   Aquifer

(d)   Snow

# Question: 22

From where do the following usually get water? In which form is water present in them?

(a) Clouds                                           (b) Plants

(c) Mountain tops                               (d) Aquifer

(e) Animals

## Solution:

(a)            Clouds get water from land. Clouds contain liquid form of water.

(b)            Plants get water from soil. Plants contain liquid form of water.

(c)            Mountain tops get water from atmosphere. On mountain tops, one can see solid form of water popularly called as snow. .

(d)            Aquifer gets water from rain. An aquifer contains liquid form of water.

(e)            Animals get water from various water sources such as ponds, lakes, rivers, watering holes, etc. Water exists in liquid form inside all animals.

## Question: 23

Complete the following chart by writing appropriate words in the boxes marked (a) to (e).

(a)   Solid

(b)   Gas

(c)   Lake

(d)   Pond

(e)   Ice

# Question: 24

What is ground water? What are the sources of water which are fed by ground water?

## Solution:

Water found below a water table is called ground water.  Ground water is replenished through various sources of water such as tube wells, lakes, ponds, hand pumps, wells, snow-fed rivers, and rain etc.

# Question: 25

Water is very precious for all the living beings. What will happen in future if we do not save water now?

## Solution:

Water is very important for our day-to-day life. All the activities we perform are dependent upon water. Hence, if water is not present on the earth it will impact our daily activities. We cannot imagine life on earth, without water. Therefore, it is necessary to save water now for a better future.