Information and Communication // Science

 

Chapter-11                                

 Science

          Grade-3                                   

    Information & Communication

Information is the knowledge that we get about someone or something.

Q.1. How can we exchange information with people who live far away?

Ans: We can exchange information with people who live far away by using technology in the following ways-

i) By using mobile phone 

ii) Exchange messages through e-mail.

iii) Sending letters

Q.2. Tell me five sources of information?

Ans: Five sources of information are –

textbooks,

 magazine

 radio

 Television

 internet

Q.3. Why it is important to know and share information?

Ans: It is important to know and share information, because information can tell people something new and help them make decisions.

A. Fill in the blanks.

i) ____________ is knowledge that we get about someone or something.

ii) Information comes from different __________ such as the television, radio, newspaper and books.

iii) ____________ can tell people something new or help them make a decision.

iv) A long time ago, people communicated with each other by drawing or __________.

____________ means exchange information.

v) Our lifestyle will be more easier along with the ________ of technology.

Information in our Life                                          

Science              Chap-12                          Class-4

3. Short Answered Questions.

a) Give four types of fields in which ICT is used.

Ans: ICT makes our life easy and is used in many ways in the fields of business, education, medical and agricultural services.

b) When you share the information with someone, what points should you pay attention to?

Ans: When sharing the information with someone, we should pay attention to what we want to say and how we can give clear explanations to our friends.

c) Give four examples of sources for collecting information.

Ans: There are different source of information such as people, newspaper, books, the internet, TV, radio.

4. Descriptive Questions.

a) Explain four steps for a wise use of information.

 Ans: The Four steps for a wise use of information are – 

i) Deciding what types of information you need

ii) Finding the ways and sources for collecting information

iii) Collecting

iv) Sharing  

b) Explain how we can store information.

 Ans:  We can store the information by taking a note on a notebook or paper, or using a recording technology such as camera, CD and DVD.

Information in our Life             Sci               Chap-12                       Class-4

Q.B. Write True/False, if False write the correct answer.

a) Necessary information should not be collected with the best ways and sources we found.

b) During collecting the information, we should delete a record.

c) In ancient time, people use camera, tape recorder, video recorder, pen drive, CD, DVD and memory card to store the information.

d) We can store the information by taking a note on a notebook or paper.

e) Before sharing information, organize the information on the exercise book.

Information in our Life             Sci               Chap-12                           Class-4

Q.A. Fill in the blanks.

a) People have invented and ______________ a various types of technologies in order to pass on ____________ to others.

b) A scientist named ______________ succeeded to send information through wire using telegraph is 1837.

c) In 1876, _____________ invented the telephone to talk directly with other people across large distances.

d) In ancient time, people drew pictures on the cave wall or used _________ to record information.

 e) After the invention of__________, people have kept a record of a lot of information on books. 

f) In the modern age, the telegraph was invented by _____________ in 1832.

            Grade-5 

Information in out life

Q1. Why is information important?

Ans: Information is important because it can help people to keep safe, promote their wellbeing and prevent harm.

Q.2. What is internet?

Ans: The internet is a huge network of computers together all over the world. It anables us to collect information more easily.

Q.3. Give three names of devices for storing information.

Ans: Three names of devices for storing information are mobile, CD, DVD, camera.

Q.4. What are the technologies that enable us to exchange information?

Ans: The technologies that enable us to exchange information are mobile, sending mail, taking pictures, making videos.

Q.5. Name three major search engines used in Bangladesh.

Ans: Major search engines used in Bangladesh are Google, Yahoo or Pipilika. 

Descriptive Questions:

1. You have got the information from TV that a cyclone is coming toward Bangladesh. What will you do?

Ans: If meteorologist forecasts that there will be a cyclone, this news should be shared through different media so that life and assets of the many coastal people can be saved. National assets like fishing boat and cargo of the sea can be saved by finding a safe place.

2. Explain how to collect information through the internet.

Ans: The followings are the basic steps for collecting information through the internet:

i) Use search engines such as Google, Yahoo, or Pipilika.

ii) Type keywords relevant to the topic you are searching for into the ‘search bar’, and click ‘search’ or press the ‘enter key’ on your keyboard.

iii) Search through the list of web pages to find the information you need.

iv) Repeat above 3 Steps as necessary, or choose new keywords that are more or less specific and thus search the information you need. 

3. Why do we need to acquire the proper skills to find, understand, evaluate and use information?

Ans: We receive a lot of information everyday. This information is increasing at a rapid pace. Some information is correct, but some are incorrect. We need to acquire the proper skills to find, understand, evaluate and use information.

4. What will happen to our life without information sharing?

Ans: Information is very important for our life. Information enables us to know something new and to decide what to do. Therefore, we have to know and share information among us. Information sharing is an activity through which information is exchanged among friends, families, and other people. Without sharing information, people can not keep safe and get harm. Nobody can prevent cyclones but their impact can surely be reduced.  

5. You want to share the information you collect with your friend who lives in Japan. What are the ways by which you can share the information with him? What type of technology will you need? 

Ans: The internet enables us to collect information more easily. The internet is a huge network of computers together all over the world. I can collect information with my friend who lives in Japan through the internet by using computers or mobile phones. I can also share information by taking picture or making video with cameras.