Across
- 3. the rigid outer part of the earth
- 4. the point on the earth's surface vertically above the focus of an earthquake
- 5. a mountain or hill in which lava or hot fragments of rock erupt from
- 8. the force that attracts a body towards the centre of the earth
- 13. another name for core
- 16. the sideways and downward movement of the edge of a plate of the earth's crust into the mantle beneath another plate
- 17. an instrument that measures and records details of earthquakes
- 18. a thin layer of gases that surrounds the Earth
- 21. the outermost shell of earth
- 23. he solid mineral material forming part of the surface of the earth and other similar planets
- 24. the upper layer of the earth's mantle, below the lithosphere
- 27. the layer just beneath the crust
- 31. the centre of the earth
- 32. hot molten or semi-fluid rock erupted from a volcano or fissure
- 33. the branch of physics that deals with the deformation and flow of matter
- 36. relating to earthquakes or other vibrations of the earth and its crust
- 37. a sudden violent shaking of the ground
- 38. the branch of science concerned with earthquakes
- 39. a line on a rock surface or the ground that traces a geological fault
- 40. a volcano that will no longer erupt
Down
- 1. the person who came up with the Pangea theory
- 2. the science which deals with the physical structure and substance of the earth
- 6. a smaller earthquake following the main shock of a large earthquake
- 7. the great size or extent of something
- 9. hot fluid or semi-fluid material below or within the earth's crust
- 10. continuous physical force exerted on or against an object by something in contact with it
- 11. a dark fine-grained volcanic rock that sometimes displays a columnar structure
- 12. the outermost layer that we live on
- 14. a slight earthquake
- 15. the gradual movement of the continents across the earth's surface
- 19. a volcano that hasn't erupted in a long time but is set to erupt in the future
- 20. a large natural elevation of the earth's surface rising abruptly from the surrounding level
- 22. large-scale processes affecting the structure of the earth's crust
- 25. wave, an elastic wave in the earth produced by an earthquake or other means
- 26. the planet we live on
- 28. the hypothetical landmass that existed when all continents were joined
- 29. the powdery residue left after the burning of a substance
- 30. the region of the earth's interior between the crust and the core
- 34. a sharp change of pressure in a narrow region travelling through a medium
- 35. the mass of a substance per unit volume