Tectonic Plates Glossary

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Across
  1. 4. Large pieces of the Earth's lithosphere that move due to mantle convection
  2. 5. A fossil of an organism that lived during a specific time period, used to help date rock layers.
  3. 7. A tectonic plate boundary where two plates move apart, often creating mid-ocean ridges or rift valleys.
  4. 8. The process by which one tectonic plate is forced beneath another into the mantle.
  5. 9. The rigid outer layer of the Earth, including the crust and upper mantle.
Down
  1. 1. The theory that continents move over geological time.
  2. 2. The process where new oceanic crust forms at mid-ocean ridges and moves outward.
  3. 3. A plate boundary where two plates slide past each other, often causing earthquakes.
  4. 6. A tectonic plate boundary where two plates move toward each other, often forming mountains or subduction zones.