Hibok-Hibok crossword

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Across
  1. 4. Rock formed form cooled molten magma or lava.
  2. 6. A landform that erupts built-up magma.
  3. 8. A dense, destructive mass of very hot ash, lava fragments, and gases ejected explosively.
  4. 9. The Earth's crust that is found under the oceans.
  5. 10. A spot in the asthenosphere that is very hot.
  6. 12. A mountain that is formed from a continental-oceanic convergent plate boundary.
  7. 16. Melted rock below ground.
  8. 19. The upper layer of the earth's mantle, below the lithosphere, in which there is flow convection currents.
  9. 20. A sudden shaking of the ground, as a result of movements within the earth's crust.
Down
  1. 1. An island with a volcano origan.
  2. 2. A plate boundary where the plates are crashing into each other.
  3. 3. The downward movement of a tectonic plate into the mantle.
  4. 5. A place in the lithosphere where two tectonic plates meet.
  5. 7. The Earth's crust that makes up the planet's continents.
  6. 11. The Pacific plate is the tectonic plate that covers most of the Pacific Ocean and is moving northwest.
  7. 13. Mixtures of water, volcanic ash, tephra, rock fragments, and chunks of ice that can flow.
  8. 14. The powdery residue left after the burning of a substance.
  9. 15. A path along the Pacific Ocean characterized by active volcanoes and frequent earthquakes.
  10. 17. The hard rocky layer of the earth's crust.
  11. 18. Melted rock above ground.