The Wonderful World of Science – Short Answer Type Questions
Class 6
CBSE Class 6 Science — Chapter 1: The Wonderful World of Science
50 Short Answer Type Questions with clear, NCERT-aligned answers — ideal for CBSE Class 6 revision and exams.
Note: These Short Answer Questions and Answers are concise yet explanatory. They follow the NCERT syllabus closely and are designed for quick revision and exam practice for CBSE Class 6 students.
CBSE Board Examinations — Question Types (Systematic Order)
- Very Short Answer (1 mark): One-line definitions or facts.
- Short Answer (2–3 marks): Brief explanations or descriptions (2–4 sentences).
- Long Answer (3–5 marks): Detailed explanations with examples or steps.
- Activity/Practical Based: Observations, recording and drawing conclusions.
50 Short Answer Questions & Answers
Q1. What is science? Science is a method of learning about the world by observing, asking questions, and testing ideas through experiments.
Q2. How does science help us in daily life? Science helps us in areas like health, transport, communication, and food production by providing explanations and solutions to problems.
Q3. What is observation in science? Observation means carefully noticing and recording what we see, hear or measure during an investigation.
Q4. Define a hypothesis. A hypothesis is a tentative explanation or guess that can be tested by experiments or observations.
Q5. Why are experiments important? Experiments test hypotheses and provide evidence to support or refute ideas, making our conclusions reliable.
Q6. What is a fair test? A fair test is one in which only one factor is changed at a time while other conditions are kept the same.
Q7. What are variables? Variables are factors in an experiment; the one we change is the independent variable and the one we measure is the dependent variable.
Q8. What is recording of data? Recording data means writing down measurements, observations and results in a systematic way like tables or charts.
Q9. What is a conclusion? A conclusion is the final statement based on analysis of the evidence collected during an experiment.
Q10. Give an example of a simple observation at home. Observing how salt dissolves faster in hot water than in cold water is a simple home observation.
Q11. What does classification mean? Classification means grouping objects or organisms based on common features or properties.
Q12. How does classification help scientists? It helps organize information, compare similar items, and make it easier to study large numbers of objects.
Q13. What is the role of models in science? Models simplify complex ideas and help us understand and explain how systems work.
Q14. What is meant by 'investigation'? Investigation is a careful process of asking questions, collecting evidence, and finding answers through observations and experiments.
Q15. Why must experiments be repeated? Repeating experiments checks whether results are consistent and reliable, reducing chances of error.
Q16. What is meant by 'evidence'? Evidence is the information gathered from observations and experiments that supports or contradicts a hypothesis.
Q17. Define qualitative observation. Qualitative observation describes qualities like colour, smell, texture or shape, without measurements.
Q18. Define quantitative observation. Quantitative observation uses numbers and measurements, such as length, mass or time.
Q19. Give an example of a variable in a plant growth experiment. Amount of sunlight is a variable that can affect how well a plant grows.
Q20. What is the importance of asking 'why'? Asking 'why' helps identify causes and encourages deeper understanding and further investigation.
Q21. What is meant by 'prediction'? Prediction is stating what you expect to happen in an experiment before testing it.
Q22. How can we ensure safety during experiments? Follow instructions, use safe materials, wear protective gear if needed, and work under adult supervision.
Q23. Name two tools used for observation. Magnifying glass and microscope are tools used to see small objects more clearly.
Q24. What is meant by 'data table'? A data table is a structured way to record observations and measurements for easy analysis.
Q25. Why are diagrams useful in science? Diagrams show structures and steps clearly, helping others understand experiments and results quickly.
Q26. Give one example where science improved daily life. Vaccines have reduced many infectious diseases, improving public health and life expectancy.
Q27. What is a scientific report? A scientific report presents objectives, methods, observations, results and conclusions of an investigation.
Q28. What is 'measurement'? Measurement assigns numbers to properties like length, mass and time using standard units and instruments.
Q29. Give an example of measurement in daily life. Measuring the length of a table using a tape measure is an everyday measurement example.
Q30. What is the difference between observation and inference? Observation records what is seen; inference is the interpretation or explanation of those observations.
Q31. What is curiosity in science? Curiosity is the desire to learn and ask questions, which motivates scientific exploration.
Q32. How do experiments help solve problems? Experiments test ideas and show which solutions work, helping us choose the best approach to a problem.
Q33. What is the difference between a theory and a hypothesis? A hypothesis is a testable guess, while a theory is a well-supported explanation based on many observations and experiments.
Q34. Why are standard units important? Standard units allow consistent, comparable measurements across different places and times.
Q35. What is 'accuracy' in measurement? Accuracy means how close a measurement is to the true value.
Q36. What is 'precision' in measurement? Precision means how close repeated measurements are to each other, showing consistency.
Q37. What is 'fairness' in reporting results? Fairness means reporting all observations honestly, even if they do not support the hypothesis.
Q38. How does discussion help in science class? Discussion allows sharing ideas, checking mistakes and learning from others' observations and explanations.
Q39. Give an example of an everyday experiment using water. Testing how fast sugar dissolves in hot and cold water is a simple experiment involving water.
Q40. What is an independent variable? The independent variable is the factor deliberately changed by the experimenter to observe its effect.
Q41. What is a dependent variable? The dependent variable is what is measured or observed in response to changes in the independent variable.
Q42. Why is it important to record units with measurements? Units tell us what the number means (e.g., cm, g, s) and ensure correct interpretation and comparison.
Q43. What is a controlled variable? Controlled variables are kept constant throughout an experiment to ensure a fair test.
Q44. How can we present results clearly? Use tables, graphs, diagrams and short written summaries to present results clearly and concisely.
Q45. What is the benefit of making a checklist before an experiment? A checklist ensures all materials and steps are ready, reducing mistakes and improving safety.
Q46. What is meant by 'reliable' result? A reliable result is one that is consistent across repeated trials and different observers.
Q47. Give an example of classifying living and non-living things. Grouping plants and animals as living and stones and water as non-living is a basic classification example.
Q48. What is an observation sheet? An observation sheet is a prepared form where students note down observations systematically for an activity.
Q49. Why should students use their own words in answers? Using own words shows understanding and helps remember concepts better during exams.
Q50. Why are these short answer notes useful for CBSE exams? They summarise key concepts clearly, follow NCERT syllabus, and train students to write concise, exam-appropriate answers.