1. How many natural phenomena are described? 1 Mark
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Answer: Seven natural phenomena are described.

2. Which site contains a saline lake? 1 Mark
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Answer: Lonar Crater Lake contains a saline lake.

3. Where are the glowing waters located? 1 Mark
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Answer: They are described at Kumbalangi in Kerala.

4. Name the three rivers mentioned with the Sundarbans. 1 Mark
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Answer: The Ganga, Brahmaputra and Meghna are mentioned.

5. What does ebb tide mean? 1 Mark
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Answer: It is the period when sea water moves away from shore.

6. What is an optical illusion? 1 Mark
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Answer: It is a visual effect that makes something appear different from its actual physical arrangement.

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Maninder Singh

CA Maninder Singh is a Chartered Accountant with 16+ years of practical experience and 20+ years of teaching experience. He teaches Science, Economics, Accounting and English at Teachoo using clear explanations and exam-focused methods students can trust.

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