Geology Vocabulary

123456789101112131415161718192021
Across
  1. 4. The location directly above the earthquake’s focus.
  2. 7. The molten rock underneath the earth’s crust.
  3. 8. A series of huge ocean waves caused by a rapid disturbance of sea water.
  4. 9. When two plate boundaries move towards each other and collide.
  5. 12. The fastest seismic wave.
  6. 15. Consists of all the minerals of the Earth’s crust.
  7. 16. Molten rock erupted from volcanic structures.
  8. 18. A type of rock formed from the solidification of molten rock.
  9. 21. An upper part of the mantle; what the Earth’s crust floats on.
Down
  1. 1. A boundary where new crust is created.
  2. 2. An instrument used to measure the motion of the ground during an earthquake.
  3. 3. The point within the Earth where earthquakes begin.
  4. 5. A supercontinent where all current continents fit together.
  5. 6. A measure of the strength of earthquakes.
  6. 10. Core The innermost layer of the Earth; composed of a solid ball of iron.
  7. 11. The secondary wave; only able to pass through solids.
  8. 13. A type of rock from the changes of other types of rock via changing environments.
  9. 14. The movement of the Earth mantle which moves the plates.
  10. 17. Plate Gigantic solid pieces of crust that make up Earth’s outermost layer.
  11. 19. Core A liquid composed of nickel and iron. It is always spinning.
  12. 20. The cracks in the Earth’s crust where movement occurs.