Computer Science - Practice Set for Class 1

Chapter 1: Know Your Computer

Fill in the blanks.

1.       A _________ is an electronic machine.

2.       A_________ keeps your food and water cool.

3.       __________ is used to watch cartoons.

4.       __________ is used to speak with people.

5.       Machines are __________ things.

6.       We can solve _________ on a computer.

7.       Sun, moon, stars are _________ things.

8.       We can play _________ on a computer.

9.       We can listen to _______ on a computer.

Tick the correct and cross the wrong ones.

1.       Moon is a machine.

2.       Machine makes our work easy.

3.       A computer is not a machine.

4.       We can draw a picture on a computer.

5.        Mobile phone is a machine.

Answer the following questions.

1.       Name two things that a computer helps us to do.

2.       Name four machines that you see at your home.

3.       Name two natural things

4.       Name two man made things.

Fill in the missing letters.

1.      C      P    T    R

2.      M    C    I    E

3.      M       N

4.      M    B     L

5.      F     U     T

Answer: Computer, refrigerator, TV, Mobile Phone, man-made, sums, natural, games, music.

Chapter 2: Parts of a Computer

Fill in the blanks.

1.      _________________ is the brain of a computer.

2.      Keyboard has small buttons called __________.

3.      __________ is used to point things on a computer.

4.      ______________ is used to see pictures, alphabet, numbers.

5.      A_____________ looks like a TV screen.

6.      ______________ helps to type letters.

7.      A ____________ has a long wire and points things on a computer.

Tick the correct and cross the wrong ones.

1.       Keyboard looks like a TV screen.

2.       Cat is the brain of a computer.

3.       Mouse helps to draw.

4.       Keyboard helps to type numbers.

5.       CPU is not an important part of a computer.

Answer the following questions.

1.       Name the four parts of a computer.

2.       Which part of a computer looks like TV?

3.       Which part of a computer is known as its brain?

4.       Which part of a computer helps you to type?

5.       Which part of a computer helps to point things on the monitor?

Answer: CPU, keys, Mouse, Monitor, Monitor, Keyboard, Mouse. 

Chapter 3: Keyboard

Fill in the blanks.

1.       ______________ helps you to type alphabet and numbers.

2.       ______________ key is used to insert a blank space.

3.       0,1,2,3,4,……. are _____________keys.

4.       ________________ key is used to erase the previous character.

5.       The ___________ is the longest key on the keyboard.

6.       There are _________ alphabet keys.

7.       The_________________ keys are used for typing words.

8.       The ______________ key is used to move to the next line.

9.       The ______________ keys are used for typing numbers.

10.   We can write on computer screen by using ___________ .    

Tick the correct and cross the wrong ones.

1.       Enter key is the longest key.

2.       Spacebar key is used to insert blank space.

3.       Backspace key is used to erase the previous letter.

4.       Caps lock key is used to write small letters.

5.       Keyboard does not help you to type.

6.       Computer mouse is not much different from the animal of the same name.

7.       There are 12 number keys.

8.       You should touch the wires of a computer from time to time.

9.       We can listen to music on a computer.

10.   A mobile phone is a machine used only for playing games.

Answer the following questions.

1.       Which key is used to insert blank space between two words?

2.       If you want to write your name in capital letters, which key will you use?

3.       If you want to write your age, which type of keys will you use?

4.       Which part of the computer helps you to type?

5.       Which key is used to move to the next line?

6.       How many

a)      Alphabet Keys?

b)      Number Keys?

c)       Enter Key?

d)      Spacebar Key?

e)      Caps Lock Keys?

f)       Backspace Key?

g)      Shift Key?

h)      Alt Key?

i)        Ctrl Key?

Answer: Keyboard, spacebar, Number, Backspace, spacebar, 26, alphabet, enter, Number, keyboard.

Chapter 4: Computer Mouse

Fill in the blanks.

1.       The ___________ helps to point things on a computer.

2.       The sound you hear on pressing a mouse button is ________

3.       The ___________ is always kept on a mouse pad.

4.       When you press the left mouse button two times, it is called_______

5.       Mouse has two__________

6.       The mouse is kept on a _____________

7.       The arrow on the computer monitor is called ________________

8.       Pressing on the left mouse button is called __________________

Tick the correct and cross the wrong ones.

1.       A mouse has five buttons.

2.       Mouse pad helps to keep away dust.

3.       When you press a mouse button you hear a click sound.

4.       Mouse pad should not be used.

5.       Mouse helps to point things on a computer.

Answer the following questions.

1.       How many buttons are there on a mouse?

2.       What is a mouse pointer?

3.       What are the two types of Clicking?

4.       What is the mouse pad?

5.       Which button is pressed to make double click?

Answer: mouse, click, computer mouse, double click, buttons, mouse pad, mouse pointer, left-click.

Chapter 5: Uses of Computers

Fill in the blanks.

1.       A computer is used in a __________.

2.       You can read and __________ on a computer.

3.       A place having airplanes is called __________.

4.       You can write ___________ to your friends.

5.       A computer can solve __________ for you.

6.       You can play __________ on a computer.

7.       You can watch ___________ movies on a computer.

8.       You can _________ to music on a computer.

Tick the correct and cross the wrong ones.

1.       A computer cannot play songs for you.

2.       A computer does not help us to write.

3.       You can watch cartoons on the computer.

4.       A computer is used at home and in schools.

5.       The arrow on the computer monitor is called the mouse pointer.

6.       When you press the right mouse button it is called right-click.

7.       You cannot play songs on a computer.

8.       The mouse needs to be kept on a mouse pad.

9.       While using mouse you may hold it in any way.

Answer the following questions.

1.       Write the names of any three places where a computer is used.

2.       Write the names of your two favorite games.

3.       Write the names of your favorite cartoons.

4.       Name the place where money is kept safe.

5.       Name four things that a computer helps you to do.

Answer: bank, write, airport, letters, sum, games, movies, listen.   

Rearrange the jumbled words.

1	UMNEBR			6	DERA
2	NEERT			7	CRAOOTN
3	EKYBAODR			8	AYLP
4	LAPHBAET			9	UMISC
5	APSCEABR			10	ELANR

Answer: number, enter, keyboard, alphabet, spacebar, read, cartoon, play, music, learn.