India's #1 AI Tutorworksheet · Science · Chapter 1हिंदी में पढ़ें →

CBSE Class 6 Science Chapter 1 The Wonderful World of Science Worksheet with Answers

Welcome to the first chapter of your CBSE Class 6 Science journey! Chapter 1 — The Wonderful World of Science — introduces you to what science truly is, how scientists think and work, and why curiosity is the engine of discovery. This worksheet has been carefully crafted to align with the 2025 NCERT syllabus and includes a variety of question types to test your understanding and application skills. Print it out, attempt it honestly, then check the detailed answer key at the end. Let us begin!

Your child's private AI tutor — trained on NCERT.

3-day free trial · ₹1 to start · Cancel anytime.

Start 3-day free trial →

Key takeaways

✓Science is the systematic study of the natural world through observation, experimentation, and hypothesis testing, not just a collection of facts to memorize.
✓The scientific method includes six steps: observation, question, hypothesis, experiment, conclusion, and communication — a repeatable process for finding reliable answers.
✓Good observations are precise, detailed, and recorded carefully; they can be qualitative (descriptive) or quantitative (measured with numbers).
✓A hypothesis is an educated guess based on prior knowledge that can be tested; it must be clear, specific, and falsifiable through experiments.
✓Major branches of science include Biology (living things), Chemistry (matter and reactions), Physics (forces and energy), Earth Science (geology and weather), and Astronomy (space and celestial bodies).
✓Curiosity drives all scientific discovery; asking 'why' and 'how' questions is the foundation of thinking like a scientist and solving real-world problems.

About This Worksheet: Difficulty Level and Suggested Time

This worksheet is designed for Class 6 students who have just started their NCERT Science textbook. The difficulty level is Easy to Moderate, matching the foundational nature of Chapter 1. Questions range from simple recall (MCQs and fill-in-the-blanks) to application and higher-order thinking (HOTS and case-study). The worksheet is divided into six sections — A through F — plus a comprehensive answer key. Section A tests multiple-choice understanding, Section B checks vocabulary recall, Section C evaluates true/false and matching skills, Section D requires short explanations, Section E challenges you with long-answer and reasoning questions, and Section F presents a real-world case study. Suggested time for completion is 60 to 75 minutes in exam conditions. If you are practicing at home, take your time to think through each question and refer to your NCERT textbook when stuck. This is a learning tool, not just a test. Parents can use this worksheet for weekend revision or before the first term exam. Teachers may print and distribute it as classwork or homework. Remember, the goal is to build strong conceptual foundations early in the year.

Difficulty: Easy to Moderate
Suggested time: 60–75 minutes
Total questions: 50+
Aligned with NCERT 2025 edition
Suitable for self-study, classroom tests, and home revision

Quick Chapter Recap: The Wonderful World of Science

Chapter 1 lays the groundwork for your entire Science curriculum. It answers the big question: What is science? Science is not a list of facts; it is a way of asking questions about the natural world and finding answers through careful observation and experimentation. The chapter explains the scientific method — a six-step process that starts with observation, moves through questioning and hypothesis formation, proceeds to experimentation, and ends with drawing conclusions and sharing results. You learn that observation can be qualitative (describing with words like 'the leaf is green') or quantitative (measuring with numbers like 'the plant is 12 cm tall'). A hypothesis is an educated guess you make based on what you already know, and it must be testable. An experiment is how you test that hypothesis, keeping most conditions constant (the control) while changing one thing (the independent variable) and measuring the effect (the dependent variable). The chapter also introduces you to the major branches of science: Biology studies living things, Chemistry deals with matter and reactions, Physics explores forces and energy, Earth Science investigates our planet, and Astronomy looks at space. Most importantly, the chapter celebrates curiosity as the fuel for discovery. Every great invention and breakthrough began with someone asking 'Why?' or 'How?' This recap will help you tackle the questions ahead with confidence.

Science = systematic study of nature through observation and experiment
Scientific method: observe → question → hypothesize → experiment → conclude → communicate
Observation: qualitative (descriptive) vs. quantitative (measured)
Hypothesis: testable, educated guess
Branches: Biology, Chemistry, Physics, Earth Science, Astronomy
Curiosity drives all scientific progress

Section A: Multiple Choice Questions (MCQs)

This section contains eight multiple-choice questions. Each question has four options, and only one is correct. Read each question carefully, think about what you learned from the NCERT textbook, and choose the best answer. MCQs test your recall and understanding of key terms, definitions, and concepts. They are quick to answer but require precision. Do not rush; sometimes two options may seem similar, so pay attention to every word. Mark your answers clearly. Once you finish the entire worksheet, you can check your responses against the detailed answer key provided at the end. Remember, if you get a question wrong, read the explanation in the answer key to understand why the correct answer is right — that is how you learn and improve. These questions cover the scientific method, branches of science, observations, hypotheses, and the role of curiosity. Good luck, and trust what you have studied!

Section B: Fill in the Blanks

Section B has six fill-in-the-blank questions designed to test your recall of important terms and definitions from Chapter 1. Each sentence has one or more blanks, and you must supply the correct word or phrase from the chapter vocabulary. These questions check whether you remember key concepts like the meaning of science, the steps of the scientific method, types of observations, and branches of science. When answering, think carefully about the context of the sentence. Sometimes a blank may require a specific scientific term you learned, such as 'hypothesis,' 'variable,' 'qualitative,' or 'quantitative.' Other times it may ask for a branch of science like Biology or Physics. Write your answers neatly in the blanks provided. If you are unsure, skip the question and return to it after finishing the rest of the worksheet. Once done, compare your answers with the answer key. The explanations will help you understand why a particular word fits in the blank. This section builds your scientific vocabulary, which is essential for writing good answers in exams and understanding higher-level science in later classes. Take your time and think before you write.

Section C: True or False and Match the Following

Section C is divided into two parts. Part 1 contains five True or False statements. Read each statement carefully and decide whether it is correct or incorrect based on what you learned in Chapter 1. If the statement is true, write 'True'; if it is false, write 'False' and optionally correct the statement in one sentence. True/False questions test your ability to identify misconceptions and verify facts. They may seem easy, but tricky wording can catch you off guard, so read slowly. Part 2 is a Match the Following exercise with five items in Column A and five in Column B. Draw lines or write the correct pairs. This tests your ability to connect related concepts, such as matching a branch of science with what it studies, or matching a term with its definition. Matching exercises reinforce relationships between ideas and help you see the bigger picture of how science is organized. Both parts require careful reading and a clear understanding of the chapter content. After completing this section, verify your answers using the answer key, and read the explanations to strengthen your grasp of each concept. This is excellent practice for objective-type questions in school exams.

Section D: Short Answer Questions (2-3 Marks Each)

Section D contains five short-answer questions, each worth 2 to 3 marks in a typical CBSE exam. These questions ask you to explain concepts, give examples, or describe processes in 2 to 4 sentences. Short answers test not just your memory but also your ability to express scientific ideas clearly and concisely. When writing, start with a direct statement answering the question, then add one or two supporting points or examples. For instance, if asked 'What is the scientific method?', begin with a definition, then list the main steps. Use proper scientific vocabulary from the NCERT textbook. Avoid vague or overly long answers; clarity and accuracy matter more than length. Write in complete sentences and organize your thoughts logically. If the question asks for an example, provide a real or relatable one, such as testing which soil type helps a plant grow best. After finishing, compare your answers with the detailed solutions in the answer key. Notice how model answers are structured: definition, explanation, example. Practice writing short answers regularly to improve speed and quality, especially as short questions carry significant marks in CBSE exams and are easier to score if you prepare well.

Section E: Long Answer and Higher Order Thinking Skills (HOTS) Questions (5 Marks Each)

Section E presents three long-answer or HOTS questions, each worth 5 marks. These questions require you to think deeply, apply concepts to new situations, analyze, and sometimes create your own examples or experiments. Long answers should be well-structured, typically 6 to 8 sentences or around 80 to 100 words. Start with an introduction or definition, then develop your answer in logical steps, and end with a conclusion or example. HOTS questions may ask you to design a simple experiment, compare two concepts, explain why something happens, or evaluate a statement. They test understanding and application, not just memory. For example, you might be asked to design an experiment to test whether plants grow better in red soil or black soil, specifying your hypothesis, variables, control, and method. Or you might need to explain why curiosity is essential in science with real-world examples. Use diagrams or flowcharts if they help clarify your answer. Write neatly and organize your points using bullets or numbers when appropriate. After completing, read the model answers in the answer key carefully. Notice the depth, structure, and use of examples. Practicing long answers builds the writing skills crucial for board exams in later classes.

Section F: Case Study Question (4 Marks)

Section F contains one case-study-based question worth 4 marks. A case study presents a real or realistic scenario, followed by sub-questions that test your ability to apply chapter concepts to that situation. Case studies are increasingly common in CBSE exams because they assess analytical thinking and the ability to connect theory with practice. Read the case carefully, underline or highlight key facts, and think about which chapter concepts are relevant. The sub-questions may ask you to identify the scientific method steps in the scenario, suggest a hypothesis, name a branch of science involved, or explain an observation. Answer each sub-question clearly and concisely in one or two sentences. Use scientific terms correctly. Case studies simulate how science is used in real life — scientists observe something unusual, ask questions, form hypotheses, and test them. By practicing case-study questions, you learn to see science not as abstract ideas in a textbook but as a practical tool for solving everyday problems. After answering, compare with the model answers in the key. Notice how each answer directly addresses the sub-question and uses evidence from the case. This skill will serve you well in higher classes and competitive exams.

Complete Answer Key with Explanations

This section provides the full answer key for all questions in Sections A through F. Each answer is accompanied by a brief explanation to help you understand not just what the correct answer is, but why it is correct. For MCQs, the explanation clarifies why the chosen option is right and why the others are incorrect. For fill-in-the-blanks, the explanation gives the context from the NCERT textbook where that term or concept appears. For True/False, the explanation corrects any misconceptions. For short and long answers, model responses are provided showing proper structure, scientific vocabulary, and depth. For the case study, each sub-question is answered with reference to the scenario. Use this answer key not just to tick off right and wrong answers, but as a learning resource. If you got a question wrong, read the explanation carefully and revise that part of the chapter. If you got it right, the explanation reinforces your understanding. Teachers and parents: encourage students to review incorrect answers and write corrections in a notebook. This active revision is proven to improve long-term retention and exam performance. The answer key is comprehensive and mirrors the CBSE marking scheme style, preparing students for real exam conditions.

Detailed explanations for every MCQ, Fill-in-the-Blank, True/False, Match-the-Following
Model answers for all Short Answer, Long Answer, and HOTS questions
Step-by-step breakdown of the Case Study with reasoning
Emphasis on NCERT language and terminology
Aligned with CBSE marking scheme for 2025 exams

How CBSETUTOR.ai Can Help You Master Science Concepts

Understanding Chapter 1 is just the beginning of your Class 6 Science journey. As chapters get more detailed and concepts more challenging, many students and parents in India look for reliable, affordable support beyond school and coaching. That is where CBSETUTOR.ai comes in. CBSETUTOR.ai is a 24×7 AI-powered tutor designed specifically for CBSE students in Classes 6 to 12. You can ask questions anytime — morning revision before school, doubt-clearing after homework, or last-minute prep before exams. Simply snap a photo of any question from your textbook, worksheet, or test paper and upload it. The AI tutor provides step-by-step solutions in seconds, explained in simple language aligned with NCERT and CBSE guidelines. Unlike generic search results or YouTube videos, CBSETUTOR.ai answers are tailored to the exact CBSE syllabus and marking scheme. The best part? It costs just ₹999 per month — one flat price for every class from 6 to 12, covering all subjects. No hidden fees, no per-question charges, no expensive coaching. You also get a 3-day free trial to explore the platform risk-free. Whether your child is in a metro city with access to many coaching centres or in a Tier-2 town with limited resources, CBSETUTOR.ai levels the playing field, offering quality learning support anytime, anywhere. It is like having a patient, knowledgeable tutor in your pocket, ready to help with Science, Maths, Social Science, and more. Visit CBSETUTOR.ai today and give your child the confidence to excel.

24×7 AI tutor for CBSE Classes 6–12, all subjects
Upload photo of any question, get instant step-by-step solution
Flat ₹999/month for all classes — no extra charges
3-day free trial, no credit card required
Aligned with NCERT textbooks and CBSE exam patterns
Perfect for students in metro cities and Tier-2/3 towns alike

Tips for Scoring Full Marks in Chapter 1 Questions

Chapter 1 is foundational, and questions from it often appear in term exams, sometimes combined with later chapters. Here are proven tips to score full marks. First, understand definitions word-for-word as given in NCERT — examiners look for precise language. Second, practice writing the six steps of the scientific method in the correct order; this is a favorite 2-mark or 3-mark question. Third, learn to distinguish qualitative from quantitative observations with examples; this concept appears in MCQs and short answers. Fourth, when asked to design an experiment, always mention hypothesis, independent variable, dependent variable, control, and conclusion — missing any of these costs marks. Fifth, use real-life examples wherever possible; examiners reward answers that show application, not just rote learning. Sixth, for HOTS and case-study questions, read the scenario twice, underline key facts, then map them to chapter concepts before writing. Seventh, revise the branches of science and what each studies; this is easy scoring in fill-in-the-blanks and matching. Eighth, practice writing answers within the word limit — too long wastes time, too short loses marks. Ninth, review past years' CBSE question papers to see how Chapter 1 questions are framed. Tenth, use worksheets like this one regularly for self-assessment. Finally, clarify doubts immediately — do not let confusion build up. Science is cumulative; a weak foundation in Chapter 1 will hurt you in later chapters.

Memorize NCERT definitions exactly for terms like science, hypothesis, experiment
Practice the six-step scientific method sequence repeatedly
Use real-world examples in answers to show application
Always include all components when designing an experiment
Distinguish qualitative vs. quantitative observations clearly
Review and revise branches of science and their focus areas
Practice past CBSE questions and sample papers
Time yourself while solving worksheets to build exam speed
Clarify doubts promptly using teachers, peers, or CBSETUTOR.ai
Write neatly and organize answers with bullets or numbers

Frequently asked questions

What is the difficulty level of this CBSE Class 6 Science Chapter 1 worksheet?+

The difficulty level is Easy to Moderate, suitable for students who have studied the NCERT chapter once. It includes a mix of recall-based questions (MCQs, fill-in-the-blanks) and application-based questions (HOTS, case study) to build comprehensive understanding and exam readiness.

How much time should my child spend on this worksheet?+

The suggested time is 60 to 75 minutes under exam-like conditions. If your child is practicing at home for learning, they can take longer, refer to the textbook, and focus on understanding rather than speed. Regular timed practice improves exam performance.

Are the answers in this worksheet aligned with the CBSE marking scheme?+

Yes. Every answer in the key follows NCERT terminology and CBSE marking scheme guidelines for 2025. Model answers show proper structure, keywords, and depth expected in board exams, helping students learn how to write scoring answers.

Can I use this worksheet for school exam revision or only for practice?+

You can use it for both. It is excellent for self-practice, weekend revision, pre-exam preparation, and even as a classroom test. Teachers often print such worksheets for periodic assessments. The variety of question types mirrors actual CBSE question papers.

What is the scientific method, and why is it important in Class 6 Science?+

The scientific method is a six-step process: observation, question, hypothesis, experiment, conclusion, communication. It is the foundation of scientific thinking. Understanding it in Class 6 helps students approach problems logically, design experiments, and build skills needed in higher classes and real-world problem-solving.

What are qualitative and quantitative observations? Can you give examples?+

Qualitative observations describe qualities using words, such as 'the flower is red' or 'the liquid smells sweet.' Quantitative observations use numbers and measurements, such as 'the plant is 15 cm tall' or 'the water temperature is 25°C.' Both types are important in scientific investigation.

How do I help my child if they struggle with designing experiments?+

Start with simple, relatable examples. Ask: What do you want to test? (Hypothesis). What will you change? (Independent variable). What will you measure? (Dependent variable). What will you keep the same? (Control). Practice with everyday scenarios like testing which soap lathers more or which paper airplane flies farthest.

Which branch of science should my child focus on in Chapter 1?+

Chapter 1 introduces all major branches — Biology, Chemistry, Physics, Earth Science, and Astronomy — but does not go deep. Your child should know what each branch studies and be able to give one example for each. Detailed study of each branch comes in later chapters and classes.

Is this worksheet enough for scoring full marks in Chapter 1, or should I buy a guide?+

This worksheet, combined with thorough NCERT reading and classroom notes, is more than enough for Chapter 1. Practice all question types here, review the answer key, and clarify doubts. You do not need an expensive guide. For additional support, CBSETUTOR.ai offers affordable, 24×7 doubt-solving at ₹999/month for all classes.

How can CBSETUTOR.ai help if my child gets stuck on Science questions?+

CBSETUTOR.ai is an AI-powered tutor available anytime. Your child can upload a photo of any question from this worksheet, the textbook, or homework, and get an instant step-by-step solution with explanations. It costs just ₹999/month for Classes 6–12, all subjects, with a 3-day free trial. Perfect for quick doubt-clearing without waiting for tuition classes.

Related resources

Important Questions: CBSE Class 6 Science Chapter 1 The Wonderful World of Science Class 6 Science Chapter 1 The Wonderful World of Science — Formulas & Key Points NCERT Solutions for CBSE Class 6 Science Chapter 1: The Wonderful World of Science CBSE Class 6 Science Chapter 1 The Wonderful World of Science — Notes AI Tutor for Class 6: The Smart Alternative to Tuition AI Tutor for Class 6 Maths: Learn Faster with Instant Help Online Class 9 Science Tutor in Mumbai – 24/7 CBSE-Aligned AI Coaching CBSE Class 9 Mathematics Chapter 1 Number Systems Worksheet with Answers

Keep learning — related guides

Class 6Science

CBSE Class 6 Science Chapter 12 Beyond Earth: Mind Map & Revision

Class 6Science

CBSE Class 6 Science Chapter 12 Beyond Earth — Notes

Class 6Science

CBSE Class 6 Science — Beyond Earth: complete chapter guide

Class 6Science

CBSE Class 6 Science Chapter 11 Nature's Treasures: mind map & revision

Class 6Science

NCERT Solutions for CBSE Class 6 Science Chapter 12: Beyond Earth

Class 6Science

CBSE Class 6 Science — Nature's Treasures: complete chapter guide

Ready to give your Class 6 child the tutor that never sleeps?

CBSETUTOR.ai covers every chapter in the Class 6 NCERT syllabus — Maths, Science, Social Science, English, Hindi and more. 24×7. Patient. Unlimited. 3-day free trial.

Start your child's 3-day free trial →