Class 5 Science Lesson 2

Class 5 Science Lesson 2 Note

EXERCISE 1-ICT

1. Put a tick mark (✓) on the correct option for the following questions:

(a) Which of the following types of communication takes place during a conversation between friends?

👉 iv. interpersonal communication ✅

(b) Which of the following is a means of mass communication used in daily life?

👉 iii. radio ✅

(c) Which one of the following is a one-way communication?

👉 ii. mass communication ✅

(d) What type of communication is the use of a red or yellow card by a referee in football?

👉 iii. symbolic ✅

(e) Binu is reading a book. Bibek is making tea in the kitchen and talking to his friend on the phone. Father and mother are listening to the news on the radio. Which of the following is interpersonal communication in this incident?

👉 iii. Bibek talking to friends on the telephone ✅

2. If the statement given below is correct, put a tick mark (✓) and if it is wrong, put a cross mark (✗):

👉

1. Transmission of information from one place to another is called communication. ✅

2. Telephone is a means of mass communication. ✗

3. Information obtained from observation is a source of information. ✅

4. Clapping is symbolic communication. ✅

5. Communication through newspapers is interpersonal communication. ✗

3. Fill in the blanks with suitable words:

👉

1. Deciding where to cross the road by looking at the zebra cross is symbolic communication.

2. Tool used to convey the information is called communication tool.

3. Interpersonal communication is a dual transmission of information.

4. Information received from the senses is communicated to the mind.

5. Television is a means of mass communication.

EXERCISE 2-COMPUTER AS MEANS OF COMMPUNICATION

1. Put a tick mark (✓) on the correct option for the following questions:

(a) What is the physical form of a computer called?

👉 ii. hardware ✅

(b) Which of the following type of device is a pen drive?

👉 ii. storage device ✅

(c) Which of the following is an input device?

👉 i. Keyboard ✅

(d) Which of the following can be done by humans but not by computers?

👉 iv. making a practical decision ✅

(e) You have created and saved various pictures on the computer. Those pictures are stored in which of the following part of the computer?

👉 iii. drive ✅

2. If the statement given below is correct, put a tick mark (✓) and if it is wrong, put a cross mark (✗):

👉

1. The computer stores the entered data. ✅

2. Monitor is the output device of the computer. ✅

3. Humans can analyze data faster than computers. ✗

4. Drive, SSD, etc. are the computer processing device of a computer. ✗

5. If the computer gets angry, it makes more errors. ✗

3. Fill in the blanks by choosing the appropriate word:

👉

1. Human brain does the work of storage like the hard drive of the computer.

2. Printer of computer is an output device.

3. Results from all computers is the same as per the command.

4. The function of giving data or instruction to the computer is done from the input device.

EXERCISE 3-TYPING SOFTWARES

1. Tick the correct option:

(a) Which of the following is the icon for MS paint?
👉 iv. ✅ (MS Paint icon)

(b) What is the name of the tool given in the picture?
👉 i. magnifier✅

(c) Which of the given tools is used to delete the created picture?
👉 i. ✅ (eraser)

(d) Which of the given shapes is used to make a picture of a traffic light like the one shown in the picture?
👉 ii. rectangle and circle ✅

(e) What is the row between the upper and lower row on a computer keyboard called?
👉 i. home row ✅

(f) Which key is used to delete the letter or number to the right of the text?
👉 ii. delete ✅

(g) Which of the following command is used to save a document in a file?
👉 ii. Ctrl + S ✅

(h) Which tab should be clicked to create a table in the word processor?
👉 iii. insert ✅

2. If the statement given below is correct, put a tick mark (✓) and if it is wrong, put a cross mark (✗):

👉

1. To fill color with the help of ‘Fill up color’, the shape must be enclosed. ✅

2. MS paint is present in Windows Accessories of the computer program. ✅

3. With the help of MS paint, you can paste the pictures on the computer and fill in the color you want. ✅

4. Saved picture in MS paint cannot be opened, viewed and edited. ✗

5. In MS paint, the eraser color is different from the background color. ✗

6. Any text can be edited on a computer with the help of a word processor. ✅

7. Spacebar is used to move the cursor and subsequent text one step forward. ✅

8. F3 is used to rename a file or folder. ✗

9. Only the middle finger should be used to type on the keyboard. ✗

10. Google sheet is an example of a word processor. ✗

3. Fill in the blanks by choosing the appropriate word from the list:

👉

1.File tab must be clicked to save the created image.

2.Text tool is used to write words in MS paint.

3.To change the size of the pencil, eraser or brush, size command is used.

4.To cut, copy, crop, resize or rotate the desired part of the image, we should first select the part.

4. Match the pairs:

(A) Tool symbol – Tool

👉

Symbol	Tool
🖌️	brush tool
✏️	pencil tool
A	text tool
🪣 (fill symbol)	colour fill tool
🟦 with paint	shape fill tool
selection box icon	select tool

(B) Shortcut key – Function

👉

Shortcut Key	Function
Ctrl + C	Copy the selected part
Ctrl + X	To cut the selected part
Ctrl + V	To paste the cut and copied part
Ctrl + A	To select all the document
Ctrl + S	To save the document
Ctrl + Z	To go one step back (undo)
Ctrl + P	To print document

5.Answer the following questions:

(a) What is the difference between information and communication? Explain with examples.

👉 Information is the message or knowledge we receive or give, while communication is the process of sending or receiving that information. For example, hearing news on the radio is receiving information, and broadcasting that news to the public is communication. Seeing a red traffic light is information, and stopping the vehicle after seeing it is communication.

(b) What are the sources of information? Classify with examples.

👉 Sources of information can be natural or artificial. Natural sources include things we observe directly through our senses, like the smell of smoke or changes in weather. Artificial sources are created by humans, such as newspapers, television, radio, books, mobile phones, and the internet. These help us get information from near or far locations.

(c) Mention the types of communication and describe each in brief.

👉 There are three types of communication: intrapersonal, interpersonal, and mass communication. Intrapersonal communication happens inside a person’s own mind when they think or make decisions. Interpersonal communication happens between two or more people, like face-to-face talking or a phone call. Mass communication happens when information is shared with many people at the same time, like through television, radio, or newspapers.

(d) Name the various parts of a computer. Distinguish between input, output, processing device and storage device.

👉 Various parts of a computer include the monitor, keyboard, mouse, CPU, printer, speaker, and hard disk. Input devices are used to give instructions to the computer, like the keyboard and mouse. The processing device is the CPU which analyzes the data. Output devices show the result of the work, like monitor and printer. Storage devices save the data, like hard disk and SSD.

(e) Write three similarities and three differences between humans and computers.

👉 Similarities between humans and computers are: both can receive information, both can store data, and both give results after processing. Differences are: humans can express emotions, but computers cannot; humans can make their own decisions, but computers follow instructions; and humans have creativity, but computers cannot create on their own without programming.