COMUPTER    Class 4                      

                          CH – 1 (COMPUTERS – STORAGE AND MEMORY DEVICE)

A.    Tick the correct answer.

1.      Data

2.      Secondary

3.      Volatile

4.      1024

5.      Saving

B.     Fill in the blanks.

1.      Memory

2.      Information

3.      Bits and Bytes

4.      Byte

5.      RAM and  ROM

6.      Secondary

C.     True and False.

1.      True

2.      False

3.      True

4.      False

5.      True

D.    Complete the following.

1.      1 GB = 1024 MB

2.      1 Byte = 8 bits

3.      1 KB = 1024 byte

4.      1 MB = 1024 KB

E.     Define the following.

1.      Bit: It is the smallest unit of data in computer.

2.      Byte: It is the basic storage unit in memory.

3.      RAM: It is called the primary memory. It is volatile memory.

4.      ROM: It is the Read Only Memory. It is non-volatile memory.

F.     Answer the following questions.

1.      Write the difference between data and information.

Ans. Data is collection of raw items. Information is processed form of data.

2.      What do you mean by computer memory?

Ans. Computer memory is used to store data and information.

3.      Differentiate between primary and secondary memory.

Ans.

   4.   What is a Hard Disk?

 Ans. The Hard disk is the main permanent storage area of computer.

 5.    What is a Blu-ray Disc?

  Ans.  Blu-ray Disc is a new DVD format. It has larger storage capacity of 100 GB.

G.    Application Based Question. (Not in syllabus)

   Ans. She was working in RAM memory so her work was lost.

                                      CH – 6 (STEP-WISE THINKING)

A.    Tick the correct answer.

1.      MS-PowerPoint

2.      Microphone

3.      Speakers

4.      Digital Camera

B.     True and False.

1.      False

2.      True

3.      True

4.      False

C.     Match the following.

Step 1.       Ram had ₹20.

Step 2.       He got reward.

Step 3.        Now, he has ₹35.

Step 4.        20 + Reward = 35

Step 5.        Ram earned 35-20 = ₹15 as reward.

D.    Complete the following sentences.

1.      Start

2.      All programs

3.      Accessories

4.      MS-Paint

E.     Answer the following questions.

1.      In three hours, how many times will the hands of clock meet together?

Ans.  3 times.

2.      Your age is double your brother’s age and he is five years old. What is your age?

Ans.  10 years.

3.      Suppose your grandfather doesn’t know how to operate television. Write the steps to tell him the normal functioning of remote control to watch television.

Ans.  1.Switch on power button.

2  Use CH+ and CH- to change channels.

3  Use V+ and V- to raise and low volume.

Important full forms:

RAM- Random Access Memory

ROM- Read Only Memory

HDD- Hard Disk Drive

CD-ROM- Compact Disc- Read Only Memory

DVD- Digital Video Disc

CPU- Central Processing Unit

First Term Syllabus ,Class- 4th

 Chapter – 4      A Good Citizen

Answer the following questions.

1.      Why should an adult citizen vote in elections ?

Ans. An adult citizen should  vote in elections because he understand the importance of voting. He should assess the qualifications and worth of a candidate before choosing to vote for him/her.

2.      Differentiate between public property and private property ?

Ans.

3.      How should a good citizen care for public property like roads, railways , parks,etc. ?

Ans.  a.  People should not damage public property.

b.        Keep roads clean.

c.       Parks should be kept clean.

d.       Don’t throw garbage in train compartments.

4.      How should you care for your school and public libraries ?

       Ans. a-Never write on the walls of school libraries.

b- Do not tear off pages from books.

c- Keep your school playground clean.

d- Do not break or damage the desks.

5.      Why are monuments important ? How should we care for them ?

Ans. Monuments are important because through monuments we get to learn about events and happenings of the past. There are some rules to protect or care these monuments that are-

a-      Do not harm the ancient buildings.

b-      Damaging historical monuments is a punishable offence under the Ancient Monuments and Archaeological Sites and Remains Act,1958.

Match the following.

1.      Public  Property           --   owned by the government and belongs

                                              to the public in general.

2.      Save electricity             --   by switching off lights and fans when not

                                               in use.

3.      Ancient monuments

And Archaeological

Sites and Remains

Act,1958                         --   punishes offences related to damaging

                                              of historical monuments.

4.      Ballot Papers                  --  are now replaced with Electronic Voting

                                               Machines.

5.      ArchaeologicaL Survey

of India                             --  protects and maintains public

                                                property.

Chapter – 8        Introduction to Maps

Answer the following questions.

1.       What is a map? How is it more useful than a globe ?

Ans. A map is a visual representation of an area or a part of an area, usually on  a flat surface drawn according to a scale. Map is more useful than globe because maps give detailed information than a Globe.

2.       What are the different type of a map ?

Ans. there are three types of maps

a..Physical Maps

b..Political Maps

c..Thematic Maps.

3.       What are four directions and sub-direction ?

Ans. Four main directions are-

North, South, East and West.

Four Main Sub-directions are-

North-east, North-west, South-east and South-west.

4.       What do you mean by the scale of a map ?

Ans. The scale is the ratio between the distance on the map and the distance on the ground.

5.       What is a legend or key ?

Ans. A map uses symbols or colours to represent things .A legends or  keys explains what these symbols and colours mean. 

Class 4 Essay and Application

Write an application to your principal requesting her to change the section.

The Principal,

Little Flower Convent School,

Dina agar.

Dear Sister,

 I beg to state that I am a student of class 4 lotus in your school. My cousin brother studies in 4 Daisy. We both live in a same home and do our homework together. So,kindly change my section from 4Lotus to 4 Daisy and oblige.

Thanking you.

Yours faithfully,

Name-

Roll no.-

Date-

       Essay- Value of games

1.  Games are becoming very popular. Games are very useful for the body. The human body needs exercise to keep fit. Exercise keeps diseases away. It is very important for each student to play one or the other games.

2. Games teach us discipline and proper behaviour. It builds character. Vast playgrounds must form a part of every school. The spirit of sportsmanship makes us good citizens.

3. Some players are the ornaments of their school. Some players shine at district level while others at University level. Some of the players are the pride of their country. Players of one country go to another country to take part in matches. Live relay on television entertain the people all over the world. Women have also started taking part in games. They are ahead in some fields. We are proud of P.T Usha.

Class 4 General Science

Chapter : 5

1) Tick the correct options

a. Cones

b. broad

c. marshy areas

d. stem

e. marshy areas

(2) T/F

a. False

b. False

c. True

d. False

e. True

(3) Give two examples -

a. Cactus, date palm

b. Peepal, mango

c. Duckweed, water lettuce

d. Lotus, water lily

e. Hydrilla, tape grass

f. Tea, coffee

g. Cariop, kendelia

(4) Q/A

a. Habitat - The natural surroundings in which a plant lives. 

Adaptation -The special features in a plants body that allow it to survive in its habitat. 

b. 1.The trees are tall and straight. 

    2.Leaves are needle like. 

    3.They have cones instead of flowers. 

c. Roots of cactus are spread far out to catch the water and the leaves are reduced to spines. 

d. Plants in the marshy areas have breathing roots as they do not get air in the water logged soil. 

e. Floating plants float on the surface of water. e. g duckweed, water lettuce and submerged plants grow  under water e. g hydrilla, tape grass. 

f. These plants clean the water by removing carbon dioxide breathed out by aquatic plants. 

g. Evergreen plants have their leaves throughout the year but deciduous plants shed their leaves in winters. 

h. Plants in the plains shed their leaves in winters to protect them from extreme cold. 

i. Terrestrial plants grow on land. E. g mango, neem etc. where as aquatic plants grow in water. e. g lotus, lily etc. 

                                  HOTS

1.These plants clean the water by removing carbon dioxide breathed out by aquatic animals. 

2.Lotus plant cannot survive in the desert because it is an aquatic plant. 

Class 4 – Hindi

Class 4 Punjabi

orrect options 

a. Frictional force

b. Gravitational force

c. Iron

d. Frictional force

e. Change the shape

(2) True/False

a. False

b. True

c. True

d. False

e. False

(3) Fill ups

a. Force

b. Gravitational

c. Force

d. Towards

e. Opposite

(4) Q/A

a. The effects of force are -

1.It can stop a moving object. 

2.It can change the direction of a moving object. 

3.It can change the shape of an object. 

b. The force of the earth that pulls all objects towards itself. 

c. The force that opposes motion is called frictional force. 

d. The force exerted by a magnet on iron objects is called magnetic force. 

e. The force exerted by the muscles is called muscular force. 

f. If there was no gravity, everything would float in the air. 

                            HOTS

1.A boy slips when he steps on a banana skin due to less friction. 

2.Gravitational force. 

Class – 4 Maths  Chapter 1

Exercise-1.4

 Q1. See answers from page no.240

Q2.     Greatest no.         Smallest no.

a).      875321                123578

b).      976540                405679

c).      987653                356789

d).      843210                102348

Q3. Equal value

Q4. Sunil's father earn= 1,96,580

       Friend's father earn= 99,580

 Sunil's father earn more.

       Exercise - 1.5

Q1. See answers from page no.240

Q2. a) 8,888< 44,254 < 45,275 < 66,778

b) 29,375 <77,675 < 3,46,527 < 4,49,827

c) 49,247 < 3,84,272 < 5,76,428 < 8,88,888

d) 3,84,929< 4,82,625<5,87,327<6,76,875

Q3.

a) 96,984> 66,786> 57,578 > 38,786

b) 84,288 >74,936> 34,823 >11,507

c) 4,48,521>3,46,502 >1,71,617 >97,705

d) 6,34,720> 5,45,312 >3,72,418> 88,755

Q4.

Ascending order

24,250<24,350< 24,450 <24,550< 24,650 <24,750 <24,850 < 24,950

Descending order

24,950> 24,850> 24,750> 24,650> 24,550> 24,450> 24,350 >24,250

Class – 4 Subject – General Science 

Ex. 1- Tick the correct options

       a. Oxygen

       b. Stomata

       c. Bleaching

       d. Carbon dioxide

       e. All of these

Ex. 2-Fill in the blanks

       a. tap

       b. roots

       c. stem

       d. stem

       e. chlorophyll

 Ex. 3-True/False

       a. false

       b. true

       c. false

       d. true

       e. false

Ex. 4 Answer the following questions

 a. Green leaves require water, carbon dioxide and sunlight to prepare their food.

 b. Plants used some of the food for its growth and extra food is stored as starch in different parts of the plants.

 c. Tap root is one long main root with many side roots. For example-trees, shrubs     and a fibrous root is a cluster of small, same sized roots arise from the end of the stem. For example-grass, wheat.

 d. The stem holds the plant upright and conducts water and food to different parts of the plant.

 e. They give us food, oxygen, wood, paper oils etc.

 f. Plants help to keep the air fresh and clean by giving out oxygen.

 g. Stomata-Tiny openings on the lower surface of the leaves.    Bleaching-The process of removing green colour from the leaves.     Transpiration-The process by which plants give out extra water.    Photosynthesis -The process by which green plants make their own food.

                                HOTS

1.Yellow leaf does not produce food due to the absence of chlorophyll.

 2.Leaves of à plant kept in a dark room do not produce starch due to the absence of sunlight.

 3.If the roots of a plant are cut off, it will not grow.

Class – 4 Subject – Social studies

Chapter – 3  Introduction to Civics

A. Fill ups

1.     Civics

2.     Ethics

3.     Loyal

4.     Development

5.     Fairly

     B.True or False

       1. False

          2. True

          3. False

          4.True

          5. False

      B. Answer the following questions.

Q.1 What is Civics?

A.1 The study of person’s rights and duties as a citizen is known as Civics.

Q.2 What do you mean by Civic sense?

A.2 Civic sense means social ethics.

                        Or

       Civic sense means the duty of an individual towards the society.

Q.3 Who is a citizen?

A.3 A citizen is a person who legally lives in a country and has the rights and                                                                                                                                                          

     protection of that country.

Q.4 What are the characteristics of a good citizen?

A.4 a. A good citizen should obey the laws of his country.

       b. A good citizen should be loyal toward his country.