DAV class 5 SST chapter 9 Solutions: Are you looking for DAV Books Solutions then you are in right place, we have discussed the complete solution of SST Chapter 12 Communication in Modern Times. DAV class 5 SST chapter 12 question answer is given below.
DAV Class-5 SST Chapter 12 Communication in Modern Times Question and Answer
Something To Know
A. Tick the correct option:
1. Which one is a method of personal communication?
Ans 1. (c) Telephone
2. What does SMS stands for?
Ans 2. (a) Short Message Service
3. Which one is a social networking site?
Ans 3. (c) Twitter
B. Fill in the blanks:
—Help Box—communication, satellites, teleconferencing, e-mail, harmed
1. Television programmes can be viewed from any part of the world with the help of satellites.
2. E-mail is similar to private messaging through Internet.
3. Teleconferencing is a useful means of conducting meetings and holding group discussion across the world.
4. The modern means of communication have harmed the social skills of people.
5. Telephone is a wonderful way of two way communication.
Ans. 1. satellites 2. E-mail 3. Teleconferencing 4. harmed 5. communication
C. Match the following:
| Column I | Column II (Answer) |
| 1. Facebook | (b) Internet |
| 2. Text messages | (d) SMS |
| 3. Group discussions | (c) Video conferencing |
| 4. Television telecast | (a) Man-made satellites |
| 5. Radio | (e) Mass communication |
Ans. 1. (b); 2. (d); 3. (c); 4. (a); 5. (e)
D. Answer briefly:
1. What is communication?
Ans 1. It is the process of sending and receiving messages by speaking, writing or using some other medium.
2. Name any two means of mass communication.
Ans 2. (i) Radio (ii) Television
3. List the benefits of a mobile phone.
Ans 3. (i) It allows access to parents, friends and business contracts, residing anywhere in the world.
(ii) It provides services like text messaging, videos, radios, etc.
4. Name any two social networking sites.
Ans 4. (i) Facebook (ii) Twitter
5. Which is your favourite means of communication? Why?
Ans 5. My favourite means of communication is mobile phone because I can talk to my parents, friends and relatives anytime, anywhere by using this device.
E. Answer the following questions:
1. What does the term “Tele Conferencing” mean? How does it help in education and business?
Ans 1. The term ‘Tele conferencing’ means the exchange of information between people who are not at the same place physically. It plays an important role in the field of education and business. It allows students to exchange information with students/ teachers in other countries. It allows business companies to conduct meetings, instructions for customers/ staff training, demonstrations and even workshops.
2. “The modern means of communication have harmed the social skills of people.” Justify the statement.
Ans 2. It is a fact that all the modem means of communication have badly affected the social skills of people. They have forgotten the joys of getting together and talking to each other. They have become so fond of surfing, chatting and messaging that they never realise that they are wasting their precious time. Internet and mobile have become an addiction. This addiction has gripped them into many problems such as sleeplessness, loneliness, information explosion, etc. E-mail has replaced letters.
3. Explain with examples.
Ans 3. E-mail has replaced letters and postcards almost completely in urban areas. E-mails are quicker to write and send. One can be sure that they will reach the addressee instantly. Moreover, one can use the internet service through a mobile phone in case there is no computer or laptop.
4. How has internet made communication almost instant?
Ans 4. The internet service and the e-mail address enable us to establish communication almost instantly. A lot of people communicate through social networks, such as Facebook, MySpace, Twitter, etc. They share the news, useful information, pictures, funny videos, and so on.
5. List four disadvantages of the modern means of communication.
Ans 5. (i)The modem means of communication have harmed the social skills of people.
(ii) People have forgotten the joys of getting together and talking to each other.
(iii) Internet and mobiles have become an addiction. They are creating problems like sleeplessness, loneliness, etc.
(iv) People waste precious time in surfing, chatting and messaging.
F. Circle the names of famous inventors:
1. Electric bulb — Thomas Edison
2. Aeroplane — Wright Brothers
3. Steam Engine — James Watt
4. Telephone — Alexander Bell
5. Telescope — Galileo
6. Printing Machine — Gutenberg
7. Television — John Baird
8. Radio — Marconi
9. Master Mathematician —Aryabhatta
10. Computer — Charles Babbage
Ans.
