Balbharti Maharashtra State Board Class 9 Science Solutions Chapter 10 Information Communication Technology (ICT) Notes, Textbook Exercise Important Questions and Answers.
Class 9 Science Chapter 10 Information Communication Technology (ICT) Textbook Questions and Answers
1. Fill in the blanks to complete the statements. Justify the statements.
a. While working with a computer we can read the information stored in its memory and perform other actions in ………………………. memory.
b. While presenting pictures and videos about the works of scientists, we can use ……………………… .
c. To draw graphs based on the quantitative information obtained in an experiment, one uses ……………………… .
d. The first generation computers used to shut down because of ……………………… .
e. A computer will not work unless ………………………. is supplied to it.
2. Answer the following questions.
a. Explain the role and importance of information communication in science and technology.
Answer:
b. Which application software in the computer system did you find useful while studying science, and how?
Answer:
c. How does a computer work?
Answer:
| Input unit | Processor | Output Unit |
| All types of information/ data is entered into the computer through this unit. Generally, a keyboard is used to enter data or information | Processing Unit (1) Memory unit (2) Control unit (3) ALU unit |
The result/solution/ answer is eventually sent to the output unit. Generally, a screen/monitor or printer is used as an output unit. |
d. What precautions should be taken while using various types of software on the computer?
Answer:
e. Which are the various devices used in information communication? How are they used in the context of science?
Answer:
3. Using a spreadsheet, draw graphs between distance and time, using the information about the movements of Amar, Akbar and Anthony given in the table on page 4, in the lesson on Laws of Motion. What precautions will you take while drawing the graph?
Answer:
Precautions to be taken while drawing a graph:
4. Explain the differences between the different generations of computers. How did science contribute to these developments?
Answer:
Generation: 1st
Time Period: 1946 – 1956
Development: Vacuum Tubes Characteristics:
Generation: 2nd
Time Period: 1956 – 1963
Development: Transistors
Characteristics:
Generation: 3rd
Time Period: 1963 -1971
Development: IC
Characteristics:
Generation: 4th
Time Period: 1971 – 2010
Development: Microprocessor Characteristics:
Generation: 5th
Time Period: 2010 – Till Date
Development: Artificial Intelligence (AI) Characteristics:
1st Generation computers occupied the entire room, but due to advancement in science and technology, today’s computer fits into our pockets.
Initially computers needed a specific language to interact but today we use voice recognition for the same.
In these ways, science has contributed in making the computers faster, smaller, cheaper and much more useful.
5. What devices will you use to share with others the knowledge that you have?
Answer:
Devices like radios, televisions, pendrives, computers, laptops, mobiles, landlines, hard drives, CDs, memory cards help us in sharing our knowledge with others.
6. Using information communication technology, prepare powerpoint presentations on at least three topics in your textbook. Make a flowchart of the steps you used while making these presentations.
Answer:
Steps for preparation of PowerPoint presentations:
7. Which technical difficulties did you face while using the computer? What did you do to overcome them?
Answer:
Class 9 Science Chapter 10 Information Communication Technology (ICT) Intext Questions and Answers
Question 1.
Make a list of various hardware and software items of a computer,
Answer:
Hardware: Mouse, Keyboard, Pendrive, Monitor and other parts of computer.
Software: Operating Systems, Application Programs, Antivirus, etc.
Answer the following questions:
Question 2.
Which devices do we directly or indirectly use for collecting, sharing, processing and communicating information?
Answer:
Question 3.
How is information communication technology important for dealing with explosion of information?
Answer:
Class 9 Science Chapter 10 Information Communication Technology (ICT) Additional Important Questions and Answers
Choose and write the correct option:
Question 1.
…………………….. includes communication devices and the use of those devices as well as the services provided with their help.
(a) Operating System
(b) Office
(c) Computers
(d) Information Communication Technology
Answer:
(d) Information Communication Technology
Question 2.
Computers have gone through …………………….. generations.
(a) 5
(b) 7
(c) 10
(d) 8
Answer:
(a) 5
Question 3.
First generation of Computers were considered to be present in the period of ……………………. .
(a) 2000 – 2001
(b) 1901 – 2001
(c) 1946 -1959,
(d) 1996 – 2001
Answer:
(c) 1946-1959
Question 4.
Full form of RAM is ……………………. .
(a) Roaming Application Memory
(b) Random Accessible Media
(c) Random Access Memory
(d) None of the above
Answer:
(c) Random Access Memory
Question 5.
Full form of ROM is ……………………. .
(a) Roaming Only Memory
(b) Random Output Media
(c) Read Only Memory
(d) None of the above
Answer:
(c) Read Only Memory
Question 6.
…………………….. is raw information.
(a) Program
(b) Memory
(c) Data
(d) Operating System
Answer:
(c) Data
Question 7.
…………………….. are used for sharing information.
(a) Telephones
(b) Hard disks
(c) RAM
(d) ROM
Answer:
(a) Telephones
Question 8.
Hard disks are used for …………………….. information.
(a) storing
(b) communicating
(c) sharing
(d) all of the above
Answer:
(a) storing
Question 9.
Computers are used for …………………….. information.
(a) storing
(b) managing
(c) sharing
(d) all of the above
Answer:
(d) All of the above
Question 10.
RAM and ROM are 2 types of …………………….. memory.
(a) external
(b) internal
(c) physical
(d) garbage
Answer:
(b) internal
Question 11.
The information stored in ROM is only …………………….., changes cannot be made.
(a) external memory
(b) readable
(c) accessible
(d) physical
Answer:
(b) readable
Question 12.
…………………….. is a group of commands to be given to the computer.
(a) Program
(b) Memory
(c) Data
(d) Operating System
Answer:
(a) Program
Question 13.
…………………….. communicates between the computer and the person working on it.
(a) Program
(b) Memory
(c) Data
(d) Operating System
Answer:
(d) Operating System
Match the columns:
| Column ‘A’ | Column ‘B’ |
| (1) Antivirus (2) OS (3) CPU (4) Printer (5) Mouse |
a) Output Device b) Software c) Input Device (d) Operating System (e) Brain of the computer |
Answer:
(1 – b),
(2 – d),
(3 – e),
(4 – a),
(5 – c)
State whether the following statements are true or false and if false, correct the false statements:
(1) RAM and ROM are the types of external memory.
(2) ICT includes communication devices and the use of those devices as well as services provided with their help.
(3) A computer cannot be used without its operating system.
(4) Microsoft Excel is used to make PowerPoint.
(5) Software refers to the set of commands given to the computer.
Answer:
(1) False. RAM and ROM are the types of internal memory.
(2) True
(3) True
(4) False. Microsoft Excel is used to make spreadsheets.
(5) True
Answer the following in one sentence:
Question 1.
Name the computer which was made between 1946 -1959.
Answer:
The ENIAC computer was made in the period of 1946-1959.
Question 2.
Give one example of Input Unit.
Answer:
Keyboard.
Question 3.
Name the 3 major parts of the processing units.
Answer:
Question 4.
What precautions need to the taken care while entering formula into the excel?
Answer:
While using a formula, the ‘=’ sign should be typed first. Similarly, no space should be inserted while typing any formula.
Question 5.
What is Internet Explorer?
Answer:
This is a kind of Search Engine. It helps to find the information we want from all the information available on the internet.
Question 6.
What is a PDF?
Answer:
A PDF or Portable Document Format file can be used to view the file to print it or to handle files.
Question 7.
What is C-DAC?
Answer:
C-D AC, is a well-known Centre for Development of Advanced Computing, situated in Pune.
Write the Full forms of the following abbreviation:
Question 1.
ICT
Answer:
Information Communication Technology
Question 2.
OS
Answer:
Operating System
Question 3.
RAM
Answer:
Random Access Memory
Question 4.
ROM
Answer:
Read Only Memory
Question 5.
CPU
Answer:
Central Processing Unit
Question 6.
DOS
Answer:
Disk Operating System
Question 7.
PDF
Answer:
Portable Document Format
Question 8.
ALU
Answer:
Arithmetic Logical Unit
Question 9.
GUI
Answer:
Graphical User Interface
Question 10.
C-DAC
Answer:
Centre for Development of Advanced Computing
Question 11.
ISCII
Answer:
Indian Script Code for Information Interchange
Define the following:
Question 1.
Memory
Answer:
Memory is the place for storing data obtained from the input and also the generated solution or answer by the computer.
Question 2.
RAM
Answer:
RAM is created from electronic components and can function only as long as it is supplied with electricity.
Question 3.
ROM
Answer:
Information stored in ROM can only be read and changes cannot be made to the information originally stored here.
Question 4.
Operating System
Answer:
It is a program which provides a means of communication between the computer and the person working on it. It is called the DOS (Disk Operating System).
Question 5.
Program
Answer:
A program is a group of commands to be given to a computer.
Question 6.
Data and Information
Answer:
Data is information in its raw (unprocessed) form.
Question 7.
Hardware
Answer:
Hardware consists of all the electronic and mechanical parts used in computers.
Question 8.
Software:
Answer:
Software refers to the commands given to the computer, information supplied to it (input) and the results obtained from the computer after analysis (output).
Give scientific reasons:
Question 1.
Computer cannot function without its operating system.
Answer:
Question 2.
ROM is a Read Only Memory.
Answer:
Complete the table:
Answer:
Answer the following questions:
Question 1.
What precautions will you take when entering data?
Answer:
Answer in detail:
Question 1.
Write in short about the opportunities in the field of ICT.
Answer:
(i) Software Field: This is an important field. Having accepted the challenge of creating software, many companies have entered this field. The opportunities in the software field can be classified as follows – application program development, software package development, operating systems and utility development, special purpose scientific applications.
(ii) Hardware Field: Today, there are several companies in our country too, which make computers. They sell computers that they have themselves made. Others sell computers brought from outside as well as repair them and take maintenance contracts to keep computers in big companies working efficiently without a break. Plenty of jobs are available here. There are job opportunities in hardware designing, hardware production, hardware assembly and testing, hardware maintenance, servicing and repairs, etc.
(iii) Marketing: There are many establishments which make and sell computers and related accessories. They need good sales personnel who are experienced in the working of computers as well as skilled in marketing.
(iv) Training: The training of new entrants for various jobs is a vast field. It is very important to have dedicated teachers who are competent in the field of computers.
Question 2.
Write in short about the industries conducting research in the field of computers.
Answer:
Question 3.
Use Microsoft Word to create a document and write equations.
Answer: