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Chapter 1 of 12
NCERT Solutions

The Ever-Evolving World of Science

CBSE · Class 7 · Science

NCERT Solutions for The Ever-Evolving World of Science — CBSE Class 7 Science.

42 questions56 flashcards5 concepts

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4 Questions Solved · 1 Section

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Activity 1.1: Question the Answer

1Come up with a curious, creative, and fun question that could lead to the answer: 'Just add some milk.'Show solution
Given: The answer is 'Just add some milk.'

This is an open-ended creative activity. There is no single correct question. The idea is to think imaginatively about situations where this answer would make sense.

Some possible questions:

(i) 'My porridge has become too thick and lumpy — what should I do?'

(ii) 'How can I make this cup of tea less bitter and more creamy?'

(iii) 'The mashed potatoes are too dry and stiff — how do I fix them?'

(iv) 'My little sister refuses to drink her Horlicks because it tastes too strong — what can I do?'

Note: Any creative, thoughtful question that logically leads to the answer 'Just add some milk' is perfectly acceptable. The purpose of this activity is to practise thinking like a scientist — by asking good questions rather than only finding answers.

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2Come up with a curious, creative, and fun question that could lead to the answer: 'Because the cat's teeth were crooked.'Show solution
Given: The answer is 'Because the cat's teeth were crooked.'

This is an open-ended creative activity. There is no single correct question. Think of funny, imaginative, or even absurd situations where this answer would fit.

Some possible questions:

(i) 'Why did the cat's bite leave such a strange zigzag mark on the butter?'

(ii) 'Why did the dentist open a clinic especially for cats in our neighbourhood?'

(iii) 'Why did the cat keep dropping the fish it caught from the pond?'

(iv) 'Why did the vet say the cat needed braces?'

Note: Any imaginative question that logically or humorously leads to the answer 'Because the cat's teeth were crooked' is perfectly valid. The goal is to practise creative and scientific thinking.

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3Come up with a curious, creative, and fun question that could lead to the answer: 'Don't panic, I have my towel.'
4Come up with a curious, creative, and fun question (not an obvious mathematical one like 'What is 32+10?' or 'What is the answer to life, the universe, and everything?') that could lead to the answer: '42'

2 more solved questions in The Ever-Evolving World of Science

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Frequently Asked Questions

What are the important topics in The Ever-Evolving World of Science for CBSE Class 7 Science?
The Ever-Evolving World of Science covers several key topics that are frequently asked in CBSE Class 7 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in The Ever-Evolving World of Science — CBSE Class 7 Science?
Understand the core concepts first, then work through the 42 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
Where can I get free NCERT Solutions for The Ever-Evolving World of Science Class 7 Science?
This page has free step-by-step NCERT Solutions for every exercise question in The Ever-Evolving World of Science (CBSE Class 7 Science) — written the way examiners award marks: given, formula, working, answer.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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