Introduction: “A Curious Mind” is Lesson 3 from the ASSEB (Assam State Board of Secondary Education) Class 6 English textbook Rainbow. This lesson celebrates the spirit of inquiry — the natural curiosity of children to ask “why?” and “how?” — and connects that curiosity to the great scientific discoveries made by curious minds. Through a friendly conversation between Meera, Orgo and Nikita, the lesson introduces the famous Indian physicist Sir C. V. Raman, his Nobel Prize-winning discovery known as the Raman Effect, and the importance of National Science Day. The lesson encourages students to observe the world around them, to ask questions politely and respectfully, and to keep their minds open to learning new things every day.
Summary
The lesson opens with little Orgo asking his sister Nikita why the colour of the sky keeps changing at different times of the day. Nikita, who is busy painting a scenery, gets irritated and cannot give him a proper answer. Their elder cousin Meera overhears the conversation and gently tells Nikita that Orgo’s question is a very good one, because curiosity is the beginning of all learning. She reminds them that questions should always be welcomed and answered politely. To inspire the children, Meera tells them about the great Indian scientist Sir C. V. Raman, who once asked the very same question — why is the sea blue? — and his curiosity led to a world-changing discovery.
Meera explains that C. V. Raman was born on 7 November 1888 at Tiruvanaikkaval (in present-day Tamil Nadu), excelled in his studies from an early age, and grew up to become a renowned physicist. In 1928, while studying the scattering of light, he discovered a phenomenon now known as the Raman Effect, for which he received the Nobel Prize in Physics in 1930 — the first Asian to win a Nobel Prize in any branch of science. India honoured him with the Bharat Ratna in 1954, and he passed away on 21 November 1970. To remember his great discovery, India celebrates National Science Day every year on 28th February. The lesson ends with Orgo and Nikita realising that asking questions is the first step towards becoming a scientist, and that they too should keep observing nature carefully and never be afraid to ask “why”.
Word Meanings
| Word | Meaning |
|---|---|
| Curious | Eager to know or learn something |
| Curiosity | A strong desire to know or learn |
| Inquisitive | Very interested in learning about things; questioning |
| Irritated | Annoyed or slightly angry |
| Scenery | A view of natural surroundings |
| Phenomenon | A fact or event observed in nature |
| Scattering | Spreading or throwing in different directions |
| Discovery | The act of finding something for the first time |
| Invention | Creating something completely new |
| Breakthrough | An important discovery or development |
| Renowned | Famous and respected |
| Voyage | A long journey, especially by sea or air |
| Excelled | Did very well; performed outstandingly |
| Commemorate | To remember and honour an important event |
| Observe | To watch carefully |
| Bharat Ratna | India’s highest civilian award |
| Nobel Prize | An international prize awarded each year for outstanding work |
Question Answers
A. Comprehension
1. Answer the following questions:
(a) Who was the scientist Meera was talking about?
Answer: Meera was talking about the great Indian scientist Sir C. V. Raman (Chandrasekhara Venkata Raman).
(b) What is the discovery made by C. V. Raman known as?
Answer: The discovery made by C. V. Raman is known as the “Raman Effect”. It explains how light changes its wavelength when it passes through a transparent medium.
(c) What is at the root of many discoveries and inventions?
Answer: Curiosity and the desire to know the unknown are at the root of many discoveries and inventions. A curious mind keeps asking questions, and these questions lead to new knowledge.
(d) When did C. V. Raman win the Nobel Prize?
Answer: C. V. Raman won the Nobel Prize in Physics in the year 1930. He was the first Asian to win the Nobel Prize in any branch of science.
(e) What was the question that bothered Nikita?
Answer: Little Orgo’s question — why does the colour of the sky change at different times of the day? — was the question that bothered Nikita. She was busy painting a scenery and got irritated because she did not know the answer.
(f) Why was Meera happy with Orgo?
Answer: Meera was happy with Orgo because he was asking thoughtful questions about nature. She felt that his curiosity was the first step towards learning, and she wanted to encourage such an inquisitive mind.
(g) What lesson did Orgo and Nikita learn at the end?
Answer: Orgo and Nikita learnt that they should always observe natural phenomena carefully and never hesitate to ask questions about things they do not understand. They also learnt that questions should be asked politely and answered with patience.
2. Write True or False against each statement:
| Statement | True / False |
|---|---|
| (a) Nikita knew why the colour of the sky changes at different times. | False |
| (b) National Science Day is observed on 28th February. | True |
| (c) C. V. Raman was born in Calcutta. | False |
| (d) Raman was not good in his studies. | False |
| (e) Raman breathed his last on November 21, 1970. | True |
| (f) Meera was happy about Orgo asking questions. | True |
3. Choose the correct option:
| Question | Correct Option |
|---|---|
| (a) C. V. Raman was awarded the Bharat Ratna in — | (ii) 1954 |
| (b) C. V. Raman won the Nobel Prize for — | (i) Discovering the Raman Effect |
| (c) C. V. Raman was born in — | (i) Tiruvanaikkaval |
| (d) National Science Day is observed to — | (iii) Commemorate the discovery of the Raman Effect |
| (e) Nikita painted the sky in the colour — | (iii) Blue (with red/orange shades of the setting sun) |
B. Vocabulary
1. Match the words with their meanings:
| Word | Meaning |
|---|---|
| Inquisitive | Very interested in learning about things |
| Breakthrough | An important discovery or development |
| Renowned | Famous and respected |
| Voyage | A long journey, especially by sea or air |
| Irritated | Annoyed or slightly angry |
| Curiosity | A strong desire to learn or know something |
2. Fill in the blanks with the correct words from the box (curious, inquisitive, scattered, observed, renowned):
- (a) C. V. Raman was a renowned Indian scientist.
- (b) Children are naturally curious about the world around them.
- (c) Light is scattered when it passes through tiny particles in the atmosphere.
- (d) Raman observed the blue colour of the sea during a voyage.
- (e) An inquisitive mind asks many questions and learns quickly.
3. Words that begin with the consonant blend “sc” — write five words from the lesson:
- scenery
- scientist
- science
- scattering
- school
C. Grammar
1. Fill in the blanks with the correct form of the verb ‘be’ (is / am / are / was / were):
- (a) C. V. Raman was a great Indian scientist.
- (b) Orgo and Nikita are brother and sister.
- (c) The sky is blue during the day.
- (d) I am very curious to know about new things.
- (e) Meera and her cousins were sitting in the garden.
- (f) National Science Day is observed every year on 28th February.
2. Change the following sentences into the Present Perfect Tense:
| Simple Present / Past | Present Perfect |
|---|---|
| Nikita draws a scenery. | Nikita has drawn a scenery. |
| Orgo asks a question. | Orgo has asked a question. |
| Meera tells a story. | Meera has told a story. |
| Raman discovers a new effect. | Raman has discovered a new effect. |
| I read about C. V. Raman. | I have read about C. V. Raman. |
| We learn many new things. | We have learnt many new things. |
3. Use of ‘have’ and ‘has’ — fill in the blanks:
- (a) She has finished her painting.
- (b) They have read about C. V. Raman.
- (c) I have seen a beautiful sunset.
- (d) The teacher has explained the lesson clearly.
- (e) We have celebrated National Science Day in our school.
D. Writing
1. Write a short paragraph (about 80 words) on “Sir C. V. Raman”.
Answer: Sir Chandrasekhara Venkata Raman, popularly known as C. V. Raman, was one of the greatest scientists of India. He was born on 7 November 1888 at Tiruvanaikkaval in Tamil Nadu. From childhood, he was very brilliant and excelled in his studies. He devoted his life to the study of light. In 1928, he discovered the famous Raman Effect, which explains the scattering of light. For this discovery he was awarded the Nobel Prize in Physics in 1930 — the first Asian scientist to receive this honour. In 1954 the Government of India honoured him with the Bharat Ratna, the highest civilian award. He passed away on 21 November 1970. To remember his great discovery, India celebrates National Science Day every year on 28th February.
2. Write five sentences about why curiosity is important.
- Curiosity is the desire to know more about the world around us.
- It is curiosity that has led to all the great discoveries and inventions in history.
- A curious mind keeps asking questions and is never satisfied with surface knowledge.
- Curiosity makes learning enjoyable and helps us understand difficult topics easily.
- Without curiosity, scientists like C. V. Raman could never have discovered the Raman Effect.
3. Project work: Make a list of five famous Indian scientists and write one important contribution of each.
| Indian Scientist | Important Contribution |
|---|---|
| Sir C. V. Raman | Discovered the Raman Effect (scattering of light); Nobel Prize in Physics, 1930 |
| Dr. A. P. J. Abdul Kalam | “Missile Man of India”; played a key role in India’s nuclear and space programmes |
| Dr. Homi J. Bhabha | Father of the Indian Nuclear Programme |
| Dr. Vikram Sarabhai | Father of the Indian Space Programme; founded ISRO |
| Srinivasa Ramanujan | Renowned mathematician who made great contributions to number theory |
| Jagadish Chandra Bose | Pioneer of radio science and demonstrated that plants respond to stimuli |
4. Write a short speech (about 100 words) on “Science in Everyday Life”.
Answer: Good morning to all. Today I shall speak a few words on the topic “Science in Everyday Life”. Science is no longer a subject limited to laboratories and textbooks — it is everywhere around us. From the moment we wake up to the alarm of a clock, brush our teeth with toothpaste, switch on the fan, travel by bus, watch television or use a mobile phone, we are using the gifts of science. Science has given us electricity, medicine, transport, communication and the internet. It has made our lives easier, safer and more comfortable. However, we must use science wisely so that it helps humanity and protects our environment. Let us, therefore, develop a curious mind like that of C. V. Raman, ask questions, and use science for the good of all. Thank you.
5. Imagine you are Orgo. Write a short letter to your friend telling him/her what you learnt from your sister Meera about C. V. Raman.
Answer (Sample):
Dear Rahul,
How are you? Today I am writing to share something very interesting that I learnt from my elder sister Meera. When I asked Nikita why the sky changes its colour, she got irritated, but Meera told me about a great Indian scientist named Sir C. V. Raman, who once asked the very same kind of question. He discovered the Raman Effect and won the Nobel Prize in 1930. India celebrates National Science Day every 28th February in his memory. Meera says that asking questions is the first step to becoming a scientist. From now on, I will always be curious and ask questions politely. Write back soon.
Your friend,
Orgo
Additional Questions and Answers
1. Why does the colour of the sky change at different times of the day?
Answer: The colour of the sky changes because of the scattering of sunlight by the tiny particles in the atmosphere. During the daytime, blue light scatters the most and so the sky appears blue. At sunrise and sunset, the sunlight has to travel a longer distance through the atmosphere, so most of the blue light scatters away and the red and orange colours reach our eyes — making the sky appear red, orange or pink.
2. What is the Raman Effect in simple words?
Answer: The Raman Effect is the change in the wavelength (and therefore the colour) of light when it passes through a transparent substance like water, glass or air. C. V. Raman discovered that some of the scattered light comes out with a slightly different colour from the original light. This discovery helped scientists to understand the structure of molecules.
3. Why is National Science Day celebrated on 28th February?
Answer: National Science Day is celebrated on 28th February every year because on this very day in 1928, Sir C. V. Raman announced his great discovery — the Raman Effect. The day is observed throughout India to honour his contribution and to spread the message of science among students and the common people.
4. What message does the lesson “A Curious Mind” give us?
Answer: The lesson teaches us that curiosity is the foundation of all learning. We should never feel shy or afraid to ask questions, because every great discovery in history has begun with a simple “why?” or “how?”. The lesson also reminds elders to encourage children’s questions patiently and politely, instead of getting irritated. A curious mind, combined with careful observation, can lead even an ordinary person to extraordinary discoveries.
5. Make meaningful sentences using the following words: (a) curious, (b) renowned, (c) discovery, (d) commemorate, (e) phenomenon.
- (a) curious: Children are naturally curious about everything they see around them.
- (b) renowned: C. V. Raman was a renowned scientist of India.
- (c) discovery: The discovery of the Raman Effect made India proud.
- (d) commemorate: We celebrate National Science Day to commemorate Raman’s discovery.
- (e) phenomenon: The changing colour of the sky is a natural phenomenon.