The Ever-Evolving World of Science – Very Short Answer Type Questions
Class 7
Science
Chapter 1
Strictly Based on NCERT Syllabus
CBSE Class 7 Science – Chapter 1: The Ever-Evolving World of Science
Topic-wise Very Short Answer Type Questions with clear answers for quick revision and exam practice.
Useful For: Class Tests • Periodic Assessments • Half-Yearly & Annual Exams • CBSE Class 7 Science Board Exam Standard
This page provides a topic-wise set of 50 Very Short Answer Type Questions from
CBSE Class 7 Science – Chapter 1: The Ever-Evolving World of Science.
All questions and answers are designed strictly as per the NCERT syllabus, making them ideal for
CBSE Class 7 Science board exams standard preparation and quick revision of key ideas
related to the nature, scope and process of science.
Very Short Answer Type Questions – Chapter 1: The Ever-Evolving World of Science
Topic 1: Meaning and Nature of Science (Q1–10)
Q1–Q10: Basic Ideas of Science
Q1. What is science?
Ans. Science is a systematic way of studying the natural world through observation and experiments.
Q2. From which Latin word is the term “science” derived?
Ans. The term “science” comes from the Latin word scientia, meaning “knowledge”.
Q3. Why is science called a systematic study?
Ans. It is called systematic because it follows ordered steps like observation, experimentation and conclusion.
Q4. What does science mainly try to explain?
Ans. Science mainly tries to explain how and why natural events and processes occur.
Q5. Name any two important features of science.
Ans. Science is based on evidence and it uses logical thinking.
Q6. Is science fixed or changing? Why?
Ans. Science is changing because new observations and discoveries improve or modify old ideas.
Q7. What do we mean by “ever-evolving world of science”?
Ans. It means scientific knowledge keeps growing and improving with time.
Q8. Why is proof important in science?
Ans. Proof is important because scientific ideas must be supported by evidence and not just by belief.
Q9. Can scientific ideas be tested by anyone? How?
Ans. Yes. They can be tested by repeating the same experiments and checking if the results match.
Q10. What is the role of curiosity in science?
Ans. Curiosity encourages us to ask questions, which is the starting point of scientific inquiry.
Topic 2: Scope and Branches of Science (Q11–20)
Q11–Q20: Where and What Science Studies
Q11. What is meant by “scope of science”?
Ans. Scope of science means the range of things that science studies, from tiny particles to the vast universe.
Q12. Name any two broad areas covered by science.
Ans. Science covers living things and non-living things.
Q13. Which branch of science mainly studies plants and animals?
Ans. Biology mainly studies plants and animals.
Q14. Which branch of science deals with substances and their changes?
Ans. Chemistry deals with substances and their changes.
Q15. Name the branch of science that studies motion, light and electricity.
Ans. Physics studies motion, light and electricity.
Q16. What does Earth science study?
Ans. Earth science studies rocks, soil, water, atmosphere and Earth’s processes.
Q17. Which branch of science studies the Sun, Moon and planets?
Ans. Astronomy studies the Sun, Moon, planets and other heavenly bodies.
Q18. Why are modern fields like environmental science called interdisciplinary?
Ans. They are called interdisciplinary because they use ideas from many branches of science.
Q19. In Class 7, do we study separate books of Physics, Chemistry and Biology?
Ans. No. We study an integrated Science book combining all these areas.
Q20. How does knowing the branches of science help students?
Ans. It helps students relate different topics and understand how different areas of science are connected.
Topic 3: Science in Everyday Life (Q21–30)
Q21–Q30: Science Around Us
Q21. Give any one example of science used at home.
Ans. Using an LPG gas stove for cooking is an example of science in the form of burning fuel and heat.
Q22. How is science used in transport?
Ans. Vehicles like cars and buses run using scientific principles of motion, energy and engines.
Q23. Name one way in which science helps in communication.
Ans. Mobile phones, which work on scientific technology, help in fast communication.
Q24. How does science help in the field of health?
Ans. Science helps in making medicines, vaccines and machines used in hospitals.
Q25. Give one example of science used in agriculture.
Ans. Improved seeds and fertilisers developed through science increase crop yield.
Q26. Why is it said that modern life is impossible without science?
Ans. Because we depend on scientific inventions for light, travel, communication and health care.
Q27. How does science help us save time?
Ans. Machines and devices like washing machines and computers do work faster and save time.
Q28. Why should we use scientific knowledge carefully?
Ans. Because careless use can cause pollution, accidents and harm to living things.
Q29. Give one example where science and technology help during natural disasters.
Ans. Weather satellites help in predicting storms and cyclones in advance.
Q30. How can you see that science is present in your school?
Ans. Fans, tube lights, projectors and laboratory equipment in school are all based on science.
Topic 4: Scientific Attitude and Inquiry (Q31–40)
Q31–Q40: How Scientists Think and Work
Q31. What is meant by a scientific attitude?
Ans. Scientific attitude means thinking logically, asking questions and accepting ideas only with evidence.
Q32. Name any two qualities of a student with scientific attitude.
Ans. Curiosity and honesty are two qualities of a student with scientific attitude.
Q33. What is observation?
Ans. Observation is carefully noticing something using our senses or instruments.
Q34. What is a hypothesis?
Ans. A hypothesis is a possible explanation or guess that can be tested by experiments.
Q35. Define experiment in simple words.
Ans. An experiment is a planned activity done to test a hypothesis.
Q36. Why do scientists record data?
Ans. They record data so that they can study the results carefully and others can also check their work.
Q37. What is a conclusion in a scientific inquiry?
Ans. A conclusion is the final decision or explanation after studying the data from an experiment.
Q38. Why is repetition of experiments important?
Ans. Repetition is important to confirm that the results are reliable and not by chance.
Q39. How does this chapter encourage students to think like scientists?
Ans. By telling them to observe carefully, ask questions and find answers using simple experiments.
Q40. Why should we avoid superstitions if we follow scientific thinking?
Ans. Because superstitions do not have proof, whereas scientific thinking is based on evidence.
Topic 5: Instruments, Safety and Ethics in Science (Q41–50)
Q41–Q50: Tools, Care and Responsibility in Science
Q41. Name any one simple scientific instrument used in school.
Ans. A thermometer is a simple scientific instrument used in school.
Q42. What does a thermometer measure?
Ans. A thermometer measures temperature.
Q43. Why are standard units important in science?
Ans. Standard units are important so that measurements are the same and understood everywhere.
Q44. Give one example of a standard unit of length.
Ans. Metre (m) is a standard unit of length.
Q45. Why must we follow safety rules in the science lab?
Ans. To prevent accidents and protect ourselves and others from injury.
Q46. Give one basic safety rule for working with glassware.
Ans. Handle glassware carefully and never run or play in the lab.
Q47. What do you understand by ethics in science?
Ans. Ethics in science means doing work honestly and not harming people, animals or the environment.
Q48. Why should scientists report their results honestly?
Ans. Because others depend on their results and wrong information can be harmful.
Q49. Can science answer all kinds of questions? Give a reason.
Ans. No. Science mainly answers questions about the natural world, not about personal beliefs or values.
Q50. How does this chapter prepare you for higher classes in science?
Ans. It teaches basic ideas of scientific thinking and inquiry, which are needed to understand tougher topics in higher classes.