Plate Tectonics

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Across
  1. 3. This is one of the largest mountain ranges in the world and lies on a divergent plate boundary. It is formed when the gap left by the operating tectonic plate boundary is filled with molten material, causing a ridge to form.
  2. 4. The name of the supercontinent that was created when bits of the continents merged millions of years ago.
  3. 5. Geologists found similar plant and animal _______ on different continents. This shows that once the continents were together in a supercontinent.
  4. 7. ___________ crust is the crust that forms on land.
  5. 9. The layer of the earth that the crust lays on top of.
  6. 10. _______ crust is the crust that forms in the ocean.
  7. 13. It has been found that ________ ______ on different continents have the same rock types, rock layers, and rock ages and that they seem to connect, supporting the theory of continental drift.
  8. 15. A giant deep ocean trench in the Pacific Ocean that lies at a convergent plate boundary and was formed through subduction
  9. 16. This is the name of the plate boundary that forms when two tectonic plates crash into each other head on.
Down
  1. 1. These things deposited coal and limestone and made scratches in the rock on different continents that when matched up revealed that the continents were once joined together into a supercontinent.
  2. 2. __________ happens when a denser tectonic plate is shoved underneath a less dense tectonic plate and the denser plate melts in the mantle.
  3. 6. _____ is what it is called when waves of sound are bounced off of an object to record the distance and shape of the object.
  4. 7. This plate boundary forms when two tectonic plates move away from each other.
  5. 8. This plate boundary occurs when two tectonic plates rub and scrape against each other horizontally.
  6. 11. When molten material fills the gap left behind by ocean trenches it causes the seafloor to get bigger. This is called ___ _____ _________.
  7. 12. The person who invented the theory of continental drift and Pangaea (Last name).
  8. 14. The broken up bits of the earth's crust that slowly move, collide, scrape together, and pull apart.