Let’s Rewind: Textual Questions and Answers
- “Books remain a source of reliable information unlike most of what we get online.” Do you agree? Give reasons.
→ Yes, I agree. Books are written and edited by experts and reviewed before publishing, making them more trustworthy. Online information can often be unchecked, misleading, or incomplete. - How does asking questions help in developing our understanding?
→ Asking questions helps us explore, think deeper, and discover new information. It makes us understand the reasons behind natural events and motivates scientific research. - Why does Dr. Ajith Parameswaran say that anyone can become a scientist?
→ Dr. Ajith believes that a great scientist can come from anywhere. If someone has curiosity, passion, and works hard, they can definitely become a scientist. - What, in your opinion, are the essential qualities of a good scientist? Mention any two.
→ A good scientist should be curious and hardworking. They must also be able to think critically and perform unbiased experiments. - Do you now agree that science is entirely different from mere opinion? Why?
→ Yes. Science is based on observation, experiments, and proof, while opinions are based on personal beliefs that may not always be correct.
Let’s Recall and Recreate
Activity 1
A. Features of a good interview:
- Rapport between interviewer and interviewee
- Conversational style
- Relevant and thoughtful questions
- Interesting and informative answers
- Natural flow of ideas
- Respectful tone
B. Questions for a local interview (e.g., with a teacher or social worker):
- Could you please tell us something about your early life?
- What inspired you to take up this profession?
- What challenges did you face in your journey?
- What do you enjoy most about your work?
- How do you think young people can contribute to society?
- What message would you like to give to students today?
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Activity 2
A. Purpose of a notice:
- To give important information to a group
- To formally announce upcoming events or changes
Other types of notices:
- Job Vacancy
- School Competition
- Meeting Announcement
B. Key features of a notice:
- Objectivity
- Clear and brief message
- Date, time, venue
- Proper format and structure
C. Sample programme notice:
NOTICE
Inauguration of the Science Exhibition
(Dear Students and Parents,)
Our school is organising a Science Exhibition as per the following schedule:
Date: 25 January 2025
Time: 10:30 AM
Venue: School Auditorium
All are cordially invited.
XYZ High School
10 January 2025
(Seal)
[Signature]
[Name]
Secretary, Science Club
D. Expected content in the body of a notice:
- Purpose of the event
- Date and time
- Venue
- Invitees
- Brief description
E. Sample Notice:
NOTICE
Science Exhibition by the Science Club
(Dear Students,)
The Science Club of our school is conducting a Science Exhibition to encourage student innovation and creativity.
Date: 20 August 2025
Time: 10:00 AM
Venue: School Seminar Hall
All students are requested to visit and support their friends’ efforts.
Secretary, Science Club
(Seal)
[Name]
Activity 3
A. Causes of human-animal conflict and extreme weather:
- Misuse of land
- Deforestation
- Climate change
- Pollution
B. Mysteries of nature (write-up example):
Mystery: Why are there more flash floods nowadays?
This question still puzzles many scientists. One reason could be climate change. Heavy rainfall in a short time, blocked drains, and improper town planning all make floods worse. We must study weather patterns to prevent disasters.
Activity 5 – Let’s Speak: JAM Speech
JAM Speech: The Invention of the Light Bulb
Good morning, everyone. Today I will speak about the light bulb, one of the greatest inventions in human history.
It was Thomas Edison who successfully invented the first practical and long-lasting electric light bulb in 1879.
The impact of this invention is huge. It replaced oil lamps and candles and brought light into our homes, schools, hospitals, and streets. It made our lives safer and allowed us to work and study even at night.
However, light bulbs also increased the use of electricity, leading to more energy consumption. But overall, this invention made the world brighter, more connected, and more productive.
Thank you.
Activity 6 – Cracking the Code: The Wonder of Science
Features of a GPS (Global Positioning System):
- Shows your exact location anywhere on Earth
- Provides turn-by-turn directions
- Helps in route planning and navigation
- Works on satellites
- Useful for drivers, hikers, and emergency services
Features of a Smartwatch:
- Tells time and date
- Tracks steps and heart rate
- Receives messages and calls
- Connects with mobile phone apps
- Monitors sleep and health status
Activity 7 – Let’s Practise Writing
A. Dancing Raisins Experiment
Materials required:
- A glass
- Soda or sparkling water
- A few raisins
- Normal water
B. Detailed Procedure:
First, half-fill the glass with soda. Add some raisins to the carbonated solution.
Then, wait for a few moments and observe what happens.
Next, slowly pour plain water into the same glass.
After that, watch how the raisins behave in the mixed liquid.
Finally, observe the raisins for a few minutes.
C. What happens to the raisins and why?
When raisins are dropped into the soda, bubbles of carbon dioxide gas stick to their surface. These bubbles make the raisins lighter and cause them to rise to the top. Once the bubbles pop, the raisins sink again. This up-and-down movement continues, making the raisins appear to “dance.” When plain water is added, the bubbles reduce, and the raisins settle down. This happens due to changes in buoyancy and gas concentration.