Tectonic Plates

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Across
  1. 3. Slowly moving pieces of Earth's crust.
  2. 4. A scientist who studies earthquakes.
  3. 6. A boundary of two tectonic plates where the plates slide past each other.
  4. 8. When one tectonic plate converges under another due to density differences.
  5. 9. A boundary of two tectonic plates where the plates move away from each other.
Down
  1. 1. Movement caused by warm fluids rising and cooler fluids sinking.
  2. 2. A boundary of two tectonic plates where the plates move towards each other.
  3. 5. The outer most layer of the Earth. This is the layer we walk on.
  4. 7. When two tectonic plates slowly crash into each other and mountains are formed.