NCERT Solutions Class 4 Environment Chapter 7 – How Things Work

Name: How Things Work – Class 4 Environment
Uploaded: 2026-04-15
Description: Meera and Dhruv explore how things around us work by spinning spinners and making paper boats. They learn how shape and balance affect movement and floating, discovering the science behind everyday objects.

Class 4 Environment

Last Updated: 15 April 2026

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Chapter Introduction

Meera and Dhruv explore how things around us work by spinning spinners and making paper boats. They learn how shape and balance affect movement and floating, discovering the science behind everyday objects.

हिंदी में (Hindi)

मीरा और ध्रुव घूमते हुए स्पिनर और कागज की नावें बनाकर हमारे आस-पास की चीज़ों के काम करने के तरीके को खोजते हैं। वे सीखते हैं कि आकार और संतुलन गति और तैरने को कैसे प्रभावित करते हैं, और रोजमर्रा की वस्तुओं के पीछे की विज्ञान को समझते हैं|

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Important Points

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Practice MCQ Questions (30 questions)

Q1. What did Meera spin to observe how things work?

Q2. What do Meera and Dhruv like to explore?

Q3. Which of the following spins well?

Q4. What shape did the square card spinner appear when spinning?

Q5. What tool was used to make spinners?

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Frequently Asked Questions (FAQ)

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NCERT Solutions Class 4 Environment Chapter 7 – How Things Work

Chapter Introduction

Watch Video Lecture

Important Points

Practice MCQ Questions (30 questions)

Q1. What did Meera spin to observe how things work?

Q2. What do Meera and Dhruv like to explore?

Q3. Which of the following spins well?

Q4. What shape did the square card spinner appear when spinning?

Q5. What tool was used to make spinners?

Q6. What can change how a spinner looks?

Q7. What happens when a multi-colour spinner is spun?

Q8. Which of these does NOT usually spin?

Q9. What were Meera and Dhruv doing in the rain?

Q10. What did they make after the rain stopped?

Q11. Where did they float the boats?

Q12. What caused some boats to flip?

Q13. What happened when foil was made into a ball?

Q14. What happened when foil was shaped like a cup?

Q15. What is one factor that affects floating?

Q16. What can help improve boat balance?

Q17. Which of these is used to make boats in the activity?

Q18. What natural object was used to make boats?

Q19. What nut shell was used to make a boat?

Q20. Which of these objects spins?

Q21. Which toy spins when pushed?

Q22. What should you do after spinning a new shape?

Q23. What might help a paper boat float better?

Q24. What kind of boat might tip over easily?

Q25. What does the chapter encourage children to do?

Q26. Why does a square card appear circular when spun?

Q27. What scientific concept does the foil cup/ball experiment demonstrate?

Q28. Which material would MOST LIKELY sink in water?

Q29. What is the purpose of the "Web of Life" game?

Q30. How can you test if an object floats?

Frequently Asked Questions (FAQ)

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