earth 3

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Across
  1. 4. Ground that remains frozen for at least two consecutive years
  2. 5. A fragment of rock or metal from space that has landed on Earth
  3. 6. The point on the Earth's surface directly above the focus of an earthquake
  4. 9. The bottom of the ocean
  5. 11. The scale used to measure the magnitude of earthquakes
  6. 14. Layers of rock
Down
  1. 1. Relating to the heat produced within the Earth
  2. 2. A natural or artificial lake used to store water
  3. 3. The supercontinent that existed during the late Paleozoic and early Mesozoic eras
  4. 7. Relating to the structure or movement of the Earth's crust
  5. 8. A landform at the mouth of a river where it fans out into several branches before entering a larger body of water
  6. 9. The process by which one tectonic plate moves under another
  7. 10. The location within the Earth where an earthquake originates
  8. 12. A type of landscape formed by the dissolution of soluble rocks such as limestone
  9. 13. A deep gorge typically one with a river flowing through it