Across
- 1. The actual location inside the Earth where an earthquake begins.
- 4. An invisible area around the Earth that protects us from harmful space radiation.
- 7. The slow movement of continents over the Earth's surface.
- 8. The thin, outermost layer of the Earth where we live.
- 10. The very center of the Earth, made of solid metal.
- 11. Rock formed from compressed and cemented sediments.
- 13. The process by which rocks are formed, broken down, and transformed into new rocks.
- 14. The part of the Earth's crust that makes up the continents.
- 16. Melted rock beneath the Earth's surface.
- 17. The point on the Earth's surface directly above where an earthquake starts.
- 22. A mountain that can erupt with lava, ash, and gasses from inside the Earth.
- 23. A layer of the Earth below the lithosphere that is soft and can flow slowly.
- 24. The breaking down of rocks by wind, water, and other natural forces.
- 25. Seismic waves that travel along the Earth's surface.
- 27. A crack in the Earth's crust where movement has occurred.
- 29. A large, thick piece of the Earth's crust that makes up the continents.
- 30. The thick layer of rock below the crust and above the core.
- 32. The original rock from which other rocks are formed.
- 33. Waves of energy that travel through the Earth during an earthquake.
- 36. Huge pieces of the Earth's crust that move around on the surface.
- 39. A naturally occurring, solid substance with a specific chemical composition.
- 41. Magma that has reached the Earth's surface.
- 43. The process where dissolved minerals glue sediments together to form rock.
- 44. The solid rock layer beneath the soil.
- 45. Boundary, A place where two tectonic plates slide past each other.
- 47. Something that is melted and in liquid form, like lava.
- 49. The process where new oceanic crust forms as old crust moves away from a mid-ocean ridge.
- 51. A tool that measures and records the strength of earthquakes.
- 52. The process of pressing sediments together under their own weight.
Down
- 2. A place where one tectonic plate slides under another and sinks into the mantle.
- 3. Shaking of the ground caused by the movement of tectonic plates.
- 5. A huge sea wave caused by an underwater earthquake or volcanic eruption.
- 6. The process of sediments being laid down in new locations.
- 9. A deep, underwater valley formed where one tectonic plate slides under another.
- 12. A thinner, denser piece of the Earth's crust found under the oceans.
- 15. The upper layer of Earth where plants grow, made of broken-down rock and organic material.
- 18. The edges where two tectonic plates meet.
- 19. The movement of broken-down rock and soil by wind, water, and ice.
- 20. A place in the Earth's mantle where hot material rises to create volcanoes.
- 21. The process where liquid rock cools and turns into solid crystals.
- 26. The process of turning from solid to liquid, like rock turning into magma.
- 28. A supercontinent that existed a long time ago when all the continents were joined together.
- 31. The solid outer part of the Earth, including the crust and the upper part of the mantle.
- 33. Small pieces of rock, soil, and other materials.
- 34. Boundary, A place where two tectonic plates are moving towards each other.
- 35. The study of earthquakes.
- 37. Seismic waves that compress and expand the ground like an accordion.
- 38. Seismic waves that move the ground up and down or side to side.
- 40. Rock formed from cooled magma or lava.
- 42. The part of the Earth's crust under the oceans.
- 46. Rock that has changed form due to heat and pressure.
- 48. Boundary, A place where two tectonic plates are moving apart.
- 50. The layer around the inner core, made of liquid metal.