Class 7 Geography Inside Our Earth

1. What is the outermost layer of the Earth called?

👉 Crust

2. Name the three layers of the Earth.

👉 Crust, mantle, core

3. Which layer lies just below the crust?

👉 Mantle

4. What is the innermost layer of the Earth?

👉 Core

5. Which layer is very hot and heavy?

👉 Core

6. What is the crust made of?

👉 Rocks and minerals

7. What are rocks?

👉 Natural solid substances

8. What are minerals?

👉 Useful natural substances

9. How many types of rocks are there?

👉 Three

10. Name the three types of rocks.

👉 Igneous, sedimentary, metamorphic

11. Which rocks are called primary rocks?

👉 Igneous rocks

12. How are igneous rocks formed?

👉 From molten magma

13. Which rocks are formed by layers of sediments?

👉 Sedimentary rocks

14. Name one example of sedimentary rock.

👉 Sandstone

15. Which rocks change form due to heat and pressure?

👉 Metamorphic rocks

16. Name one metamorphic rock.

👉 Marble

17. What is magma?

👉 Molten rock material

18. What is lava?

👉 Magma on surface

19. What is rock cycle?

👉 Continuous rock formation process

20. Which rock contains fossils?

👉 Sedimentary rock

21. What are uses of rocks?

👉 Construction and tools

22. Which mineral is used to make jewellery?

👉 Gold

23. Which mineral is used to make pencils?

👉 Graphite

24. Which mineral is used in making utensils?

👉 Aluminium

25. What do miners do?

👉 Extract minerals

26. What is mining?

👉 Extraction of minerals

27. Why are minerals important?

👉 Industrial development

28. Which layer has the highest temperature?

👉 Core

29. Which layer supports life?

👉 Crust

30. What are sedimentary rocks also known as?

👉 Layered rocks

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📌 Quick Memory Trick for Students

👉 Layers of Earth:
C-M-C → Crust – Mantle – Core

👉 Types of Rocks:
I-S-M → Igneous – Sedimentary – Metamorphic