Class 4 Environmental Studies Chapter 7: How Things Work — practice questions with answers
Free practice for Class 4 Environmental Studies, Chapter 7: How Things Work. Try the solved questions below, then take a free test with instant marking and explanations.
30 questionsNCERT · CBSE · State boards
Sample questions with solutions
Q1. Who are the two children in the chapter who love exploring how things work?
- Meera and Dhruv
- Navya and her brother
- Chandan and John
- Reena and Amit
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Answer: A. Meera and Dhruv
Why: Meera and Dhruv discover something new every weekend.
Why: Meera and Dhruv discover something new every weekend.
Q2. What did Meera spin at the start of the chapter?
- A top
- A bangle
- A coin
- A pencil
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Answer: C. A coin
Why: Meera spun a coin and watched it curiously.
Why: Meera spun a coin and watched it curiously.
Q3. According to the chapter's table, what happens to a spinning coin as it slows down?
- It begins to shake
- It spins faster
- It changes colour
- It floats
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Answer: A. It begins to shake
Why: The table notes that as the coin slows down, it begins to shake.
Why: The table notes that as the coin slows down, it begins to shake.
Q4. According to the chapter, which of these objects spin well? Select all that apply.
- Coin
- Eraser
- Bangle
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Answer: A. Coin; C. Bangle
Why: Coins and bangles spin, while erasers do not spin properly.
Why: Coins and bangles spin, while erasers do not spin properly.
Q5. An eraser spins as well as a coin does.
True or false?
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Answer: False
Why: The chapter notes that erasers do not spin properly, while coins and bangles do.
Why: The chapter notes that erasers do not spin properly, while coins and bangles do.
Q6. Which cardboard spinner stayed upright and spun well?
- The one with the toothpick away from the centre
- The one with two toothpicks
- The one with no toothpick
- The one with the toothpick at the centre
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Answer: D. The one with the toothpick at the centre
Why: The spinner with the hole at the centre looks the same from all sides and stays upright; the off-centre one does not.
Why: The spinner with the hole at the centre looks the same from all sides and stays upright; the off-centre one does not.
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How many practice questions are there for Class 4 Environmental Studies Chapter 7: How Things Work?
30 questions. A few are solved on this page; the free test shows the answer and explanation for every question after you submit.
Is this chapter from the NCERT book?
Yes — it follows the NCERT Class 4 Environmental Studies syllabus, used by CBSE and many state boards.