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Class 7 Science · Chapter 1

1. The Ever-Evolving World of Science

Chapter summary and Activity 1.1 solutions. CBSE / NCERT Class 7 Science (Curiosity).

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Chapter at a Glance and Activity

•What is this chapter about?

This is the opening chapter of the Grade 7 textbook Curiosity. It tells us that science is not just a set of facts. It is a process — a way of thinking.

A good science learner:

  • asks questions like How, Why and What if,
  • does activities and experiments,
  • observes patterns in nature, and
  • understands that all branches of science are interconnected.

The chapter also gives a short tour of the topics we study this year: acidic and basic substances, electricity, metals and non-metals, physical and chemical changes, adolescence, heat transfer, time and motion, life processes in animals and plants, light and shadows, and the Earth, Moon and Sun.

The page numbers of the book follow the flight of a butterfly and a paper plane. Just as a paper plane takes flight, learning takes flight when curiosity leads the way.

1.1Activity 1.1: Question the Answer — Make a curious, creative question for each answer given below.

There is no single correct answer here. Any interesting question that leads to the given answer is right. Some sample questions are given below.

(a) Answer: Just add some milk.

  • My tea is too strong and too hot. What should I do?
  • How can I make this dark brown paint a little lighter, like coffee?
  • The dough for the cake is too dry. How do I fix it?

(b) Answer: Because the cat’s teeth were crooked.

  • Why did the cat leave such strange bite marks on the ball?
  • Why could the cat not eat the hard biscuit properly?
  • Why did the cat’s smile look so funny in the photograph?

(c) Answer: Don’t panic, I have my towel.

  • Oh no! I spilled water all over the desk. What do we do now?
  • It suddenly started raining on our way home and we are soaked. Help!
  • The ice cream is melting and dripping on my hands!

(d) Answer: 42

  • How many days did our bean seed take to grow into a plant with flowers?
  • How many students in our school wear spectacles?
  • If one shelf holds 6 books, how many books can 7 shelves hold?

Make your own questions too. The more unusual and interesting your question, the better! Remember: to be a wise person, you must be a whys person.

← All Class 7 Science chapters 2. Exploring Substances: Acidic, Basic, and Neutral →