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🧾 CBSE · Class 7

Class 7 Science: The Ever-Evolving World of Science Worksheet (with Answers)

A free, print-ready worksheet on The Ever-Evolving World of Science for CBSE Class 7 Science, with a matching answer key. Use the sample below, or build your own with the exact mix of questions you need — no login, no ads.

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Sample worksheet

7 of 17 questions from this chapter. Generate your own for the full set, more variations, and a clean print layout.

  1. 1. Science is mainly a way of understanding the world through:
    • (a) evidence and observation
    • (b) guessing
    • (c) opinion only
    • (d) memorising
  2. 2. A testable possible explanation is a:
    • (a) conclusion
    • (b) hypothesis
    • (c) result
    • (d) fact
  3. 3. Scientific knowledge can change because:
    • (a) scientists are careless
    • (b) it is unreliable
    • (c) new evidence appears
    • (d) facts never matter
  4. 4. The first step in scientific inquiry is usually to:
    • (a) conclude
    • (b) publish
    • (c) guess the answer
    • (d) observe
  5. 5. What is observation?
  6. 6. Why does scientific knowledge evolve?
  7. 7. Describe the steps of scientific inquiry with an example.
View answers
  1. 1. (a) evidence and observation — Science relies on evidence and observation.
  2. 2. (b) hypothesis — It is a hypothesis.
  3. 3. (c) new evidence appears — New evidence improves understanding.
  4. 4. (d) observe — Careful observation comes first.
  5. 5. Careful noticing using the senses or instruments.
  6. 6. Because new evidence and better tools improve our understanding.
  7. 7. Scientific inquiry usually moves through several steps. It begins with careful observation of something in nature, which leads to a question. From this we form a hypothesis — a possible explanation that can be tested. We then design an experiment or make further observations to test it fairly, recording the results carefully. Finally we draw a conclusion about whether the evidence supports the hypothesis. For example, noticing that bread left out grows mould faster in a warm place leads to the hypothesis that warmth speeds mould growth; placing identical bread slices in warm and cool spots and comparing them tests this idea, and the results lead to a conclusion.
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How it works

Every question is drawn from StudyMatic’s own Science bank for The Ever-Evolving World of Science — nothing is auto-generated or invented. Pick how many of each type you want, add your own questions if you like, choose 1–4 paper sets for anti-cheating, and print the worksheet and answer key separately or save them as PDF.

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FAQ

Is this Class 7 Science worksheet on The Ever-Evolving World of Science free?
Yes — it is completely free, with no login and no ads. You can print it or save it as a PDF, and generate unlimited variations.
Does the The Ever-Evolving World of Science worksheet come with answers?
Yes. Every worksheet has a separate answer key with the correct answers, short explanations and marks, so it is ready for marking.
Can I choose how many questions and which types?
Yes. Open the generator for this chapter and set how many MCQs, short, long and HOTS questions you want; totals and marks update live, and you can swap any single question.
Which board and class is this for?
This worksheet is aligned to CBSE Class 7 Science, chapter “The Ever-Evolving World of Science”.