DAV Class 3 Science Chapter 10 Question Answer – Water

The DAV Class 3 Science Book Solutions and DAV Class 3 Science Chapter 10 Question Answer – Waters are essential study tools for DAV public school students in Class 3.

DAV Class 3 Science Chapter 10 Question Answer – Water

DAV Class 3 Science Ch 10 Question Answer – Water

Something To Know

A. Fill in the blanks.

Question 1.
_______ and snow are the main sources of water in nature.
Answer:
Rain

Question 2.
Rivers flow into a sea or an _______
Answer:
Ocean

Question 3.
India is surrounded by _______ on the east side.
Answer:
Bay of Bengal

Question 4.
A _______ stores river water which is used to generate electricity.
Answer:
Dam

Question 5.
Water in _______ is used for irrigating the fields.
Answer:
Canals.

B. Write True or False for the following statements.

1. Snow is a natural source of water.
2. People draw water from a river using a hand pump.
3. Rivers get water from the oceans.
4. India is surrounded by Arabian Sea on the west side.
5. Ground water is used by plants for their growth.
Answer:
1. Snow is a natural source of water. (True)
2. People draw water from a river using a hand pump. (False)
3. Rivers get water from the oceans. (False)
4. India is surrounded by Arabian Sea on the west side. (True)
5. Ground water is used by plants for their growth. (True)

C. Tick (✓) the correct option.

1. Water, present under the surface of earth, is called _______
(a) tap water
(b) groundwater
(c) lake
(d) rainwater
Answer:
(b) ground water

2. One of the main rivers of South India is
(a) Ganga
(b) Chenab
(c) Cauvery
(d) Beas
Answer:
(c) Cauvery

3. On the southern side, India is surrounded by
(a) Bay of Bengal
(b) Arabian Sea
(c) Pacific Ocean
(d) Indian Ocean
Answer:
(d) Indian Ocean

4. A river flows into a
(a) sea
(b) lake
(c) pond
(d) well
Answer:
(a) sea

5. Rivers get water mainly from
(a) lakes and ponds
(b) canals and oceans
(c) rain and snow
(d) underground wells
Answer:
(c) rain and snow

D. Answer the following Questions in brief.

Question 1.
Name two main natural sources of water.
Answer:
Rain and snow.

Question 2.
Name any three inland water bodies.
Answer:
River, pond and lake.

Question 3.
Write one use of water in the canals.
Answer:
Irrigation.

Question 4.
Name two main rivers of North India.
Answer:
Ganga and Yamuna.

Question 5.
State two methods of drawing ground water.
Answer:
Hand pump and well.

E. Answer the following Questions.

Question 1.
How is snow a source of water?
Answer:
Snow is a major natural source of water. In winters, there is normally heavy snowfall on the mountains. A part of this snow melts during summer and changes into water. This water flows down the mountains into the rivers and lakes.

Question 2.
How is a dam useful for generating electricity?
Answer:
River water is stored in dam. This water is made to fall from a height to generate electricity.

Question 3.
Why do plants look greener after rain?
Answer:
During rain, plants are washed by water and dirt is removed from leaves. So, plants look greener after rain.

Question 4.
How is ground water useful?
Answer:
Ground water is main source of drinking water for us. It is used by plants for their growth.

Question 5.
Why are picnic spots often developed around or near lakes?
Answer:
The stored water in lakes is used for boating and other water-sports. So, picnic spots are often developed around or near a lake.

Value Based Questions

Question 1.
What value is displayed by Reyansh?
Answer:
Respect for elder.

Question 2.
Where do wells get water from?
Answer:
From under the ground.

Question 3.
Name another method to draw ground water.
Answer:
Hand pump.

Question 4.
What difference did Reyansh find in the way people get water in cities and in a village?
Answer:
In cities, people just need to turn the tap to get water. In village, people take water from well or from hand pump.

Something To Do

Question 1.
Draw the picture of a rainy day and colour it.
Answer:
Do it yourself.

Question 2.
Observe the effect of rain on plants and some animals that you see in your neighbourhood.
Answer:
Do it yourself.

Question 3.
Find out the names of:
(a) Four dams in India
Answer:
(1) Bhakra Nangal Dam
(2) Sardar Sarovar Dam
(3) RihandDam
(4) HirakundDam.

(b) Six cities in India that are located near rivers
Answer:
Delhi, Agra, Allahabad, Varanasi, Patna and Kolkata.

DAV Class 3 Science Chapter 10 Solutions – Water

I. Multiple Choice Questions (MCQs)

1. Which of the following is a natural source of water?
(a) Hand pump
(b) Tap
(c) River
Answer:
(c) River

2. Rivers, lakes and ponds mainly get water from which of the following?
(a) Rain
(b) Snowfall
(c) Thunder
Answer:
(a) Rain

3. Which of the following helps in natural irrigation of plants?
(a) Snow
(b) Rain
(c) Thunder
Answer:
(b) Rain

4. Most of the big rivers finally flow into which of the following?
(a) Ocean
(b) Ponds
(c) Lakes
Answer:
(a) Ocean

5. Canals are made for which purpose?
(a) Boating
(b) Electricity generation
(c) Irrigation
Answer:
(c) Irrigation.

II. Fill in The Blanks:

Question 1.
A major portion of the earth’s surface is covered with _______
Answer:
Water

Question 2.
Rain and _______ are the two natural sources of water.
Answer:
Snow

Question 3.
_______ water can be drawn from wells with the help of hand pumps.
Answer:
Ground

Question 4.
Ganga is a major river of _______ India.
Answer:
North

Question 5.
Godavari is a major river of _______ India.
Answer:
South.

III. Write True/False:

1. Rivers are the main sources of drinking water for us.
2. Rain is a source of ground water.
3. Wells are dug to access water from under the ground.
4. Snowfall usually takes place during summers.
5. Dams are built on rivers.
Ans.
1. Rivers are the main sources of drinking water for us. (False)
2. Rain is a source of ground water. (True)
3. Wells are dug to access water from under the ground. (True)
4. Snowfall usually takes place during summers. (False)
5. Dams are built on rivers. (True)

IV. Very Short Answer Questions

Answer the following in one word:

Question 1.
Which is the main source of drinking water for us?
Answer:
Groundwater.

Question 2.
Which animal dances and sings when it rains?
Answer:
Peacock.

Question 3.
How much of the earth’s surface is covered with water?
Answer:
Three-fourth.

Question 4.
Snow melts to form which substance?
Answer:
Water.

Question 5.
Which sea lies to the west of India?
Answer:
Arabian Sea.

V. Short Answer Questions

Question 1.
What are the two uses of ground water?
Answer:
Two uses of ground water are as follows:
(a) Plants use ground water for their growth.
(b) Ground water is drawn by humans for drinking.

Question 2.
Write two important functions of rain?
Answer:
Two important functions of rain are:
(a) Rain is a natural source of irrigation for plants and crops.
(b) Rain goes underground and forms ground water.

Question 3.
Write two important functions of rivers?
Answer:
Two important functions of rivers are:
(a) Rivers provide water for irrigation of crops.
(b) River water is used for generating electricity.

VI. Picture Based Question

Question 1.
Take the help of teacher and make a diagram of water cycle.
Answer:
Do it yourself.

DAV Class 3 Science Chapter 10 Notes – Water

→ We need water for drinking, bathing, cooking, washing and for many other activities. Water is necessary for life.

→ Natural Sources of Water: Lakes, ponds, rivers, wells, seas and oceans: About 3/4th of the earth’s surface is covered with water.

→ Rain: Rain is the most important natural source of water. Lakes, ponds and rivers get water mainly from rain. Rainwater is a natural source of irrigation for plants and crops.

→ Ground water: A part of the rain water goes underground. This is called ground water. Ground water is the main source of drinking water for us.

→ Snow: Snow is a major natural source of water. In winters, there is normally heavy snowfall on the mountains. A part of this snow melts during summer and changes into water. This water flows down the mountains into the rivers and lakes.

→ Rivers: The major rivers of North India are; Indus, Brahmaputra, Ganga, Yamuna, Satluj, Beas and Chenab. The main rivers of South India are; Krishna, Cauvery, Godavari, Mahanadi, Narmada and Tapi.

→ Seas: India is surrounded by the Indian Ocean on the south, Bay of Bengal on the east and the Arabian Sea on the west side.

→ Utility of rivers: River water is stored in dam. This water is made to fall from a height to generate electricity. River water is diverted into canals also. This water is used for irrigating the fields.