Class 6 Science Chapter 1 Question Answers: The Wonderful World of Science

Class 6 Science Chapter 1, “The Wonderful World of Science,” introduces science as a way of observing, asking questions, testing ideas and improving explanations. The chapter is less about memorising facts and more about learning to think like a scientist.

The answers below are original model responses based on the 2026–27 NCERT chapter. The activities are open-ended, so another well-reasoned example can also be correct.

Chapter 1 at a glance

What is science?

Science is both a body of knowledge and a method for finding reliable answers. It begins when we notice something and wonder why it happens. We suggest a possible explanation, test it through observation or experiment, study the result and decide whether the evidence supports our idea.

This is why curiosity matters. A question such as “Why did this plant bend towards the window?” can lead to careful observation, comparison and a better explanation.

What are the steps of the scientific method?

The chapter presents a simple cycle:

1. Observe: Notice something interesting or puzzling.
2. Ask: Turn the observation into a clear question.
3. Suggest an explanation: Make a sensible, testable guess.
4. Test: Use an experiment or further observations.
5. Analyse: Examine what happened and what the evidence means.
6. Conclude and ask again: Decide whether the explanation worked. If it did not, improve it and test again.

The process is not a rigid one-way staircase. A result often creates a new question, so scientists return to earlier steps.

Model answer for Activity 1.1

Describe a similar everyday problem you tried to solve and the steps you took

Sample answer:

One evening, my study lamp did not switch on. I first checked whether the plug was properly connected. The lamp still did not work, so I guessed that the power socket might be faulty. I plugged a phone charger into the same socket, and the charger worked. This showed that the socket had power. I then guessed that the bulb was loose or damaged. After an adult switched off the power, we checked the bulb and replaced it. The lamp worked again.

How this follows the scientific method:

• Observation: the lamp did not turn on.
• Question: why was the lamp not working?
• First explanation: the plug or socket might be the problem.
• Test: reconnect the plug and test the socket with another device.
• New explanation: the bulb might be faulty.
• Test and result: replace the bulb and observe that the lamp works.
• Conclusion: the faulty bulb caused the problem.

This is a good answer because each guess is checked with evidence instead of being accepted immediately.

Model answer for Activity 1.2

Give an example of someone using the scientific method in daily life

Sample answer:

A gardener notices that one potted plant is wilting while nearby plants are healthy. She asks what is different about that pot. She checks the soil and finds it is wet, so lack of water is unlikely. She then observes that the pot is in a dark corner. She moves it to a place with suitable light while keeping the other care the same. Over the next few days, the plant becomes healthier. The observation supports her idea that insufficient light was contributing to the problem.

The gardener did not change everything at once. By changing one important condition and observing the result, she made the test more useful.

Model answer for Activity 1.3

Ask a “why” question and explain how you would find an answer

Question: Why do wet clothes usually dry faster in moving air?

Possible method:

1. Take two similar pieces of cloth.
2. Wet them with the same amount of water.
3. Hang them in places with similar light and temperature.
4. Keep one in still air and place the other near a fan at a safe distance.
5. Check both at equal time intervals.
6. Record which one dries first.
7. Repeat the test to see whether the result is consistent.

Likely conclusion: Moving air carries away water vapour near the cloth, allowing more water to evaporate. The test should be repeated because one observation alone may be affected by an unnoticed difference.

Important ideas students should understand

Science is connected

Questions about food can involve plants, health, materials, heat and water. A real problem rarely stays inside one textbook heading. Science becomes more meaningful when we see those connections.

Evidence is more important than confidence

A guess does not become correct because someone says it loudly. It becomes useful when it can be tested and compared with evidence.

A failed test is still useful

If evidence does not support an explanation, we have learned something. We can reject or improve the explanation rather than forcing the result to fit it.

Scientists work together

Discussion helps people notice mistakes, suggest better tests and examine a question from different perspectives. Asking for help is part of science, not a weakness.

Quick practice questions

1. Why is curiosity important in science?

Curiosity makes us notice unfamiliar things, ask questions and search for explanations. Without questions, scientific investigation would not begin.

2. What is a testable explanation?

It is a possible answer that can be checked through observation, measurement or an experiment. “The seed did not grow because it received no water” is testable; we can compare similar seeds given different amounts of water.

3. Why might a scientist repeat an experiment?

Repeating helps show whether a result is consistent or happened by chance. It can also reveal measurement errors or conditions that were missed the first time.

4. Is memorising a definition enough to learn science?

No. Definitions are useful, but science also requires observation, questioning, testing, analysis and explanation.

5. What should you do when evidence does not support your guess?

Check the method, consider other explanations and test again. Do not change or hide the evidence to protect the original guess.

How to study this chapter

• Explain the scientific method using an example from your home.
• Turn three everyday observations into “how” or “why” questions.
• For each question, identify what you would change, what you would observe and what should stay the same.
• Compare answers with a classmate and improve the test together.
• Use the official NCERT Chapter 1 PDF to check the source chapter.

Ask better questions inside your textbook

Learnijoy School organises NCERT study chapter by chapter and helps students explore ideas through guided questions, quizzes and interactive learning. Open Learnijoy School.

These are original learning aids, not an official NCERT answer key. Open-ended activity answers may vary.