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1. What is an earthquake caused by a large dam called?

2. What is the richter scale?

3. Shock image density is also known by which scientist’s name?

4. When do tsunamis occur?

5. What is the thickness of the crust below the himalayas? Is it me?

6. What is called mantle?

8. What is called above the mantle?

9. What word “asthenosphere” come from?

11. Which core is in liquid state?

12. Core is made of which substance?

13. Who is known by the name nife?

14. Which is the largest volcano?

15. What makes the cone on the vent?

16. What are lava fountains that come out and form cones called?

17. What comes out from composite volcanoes?

18. Where are the basalt lava found?

19. What is the length of mid-ocean ridge?

20. How is an igneous rock formed?