Plate tectonics

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Across
  1. 3. occurs where two tectonic plates move away from each other, creating new crust as magma rises from the mantle to fill the gap
  2. 5. Plates collide, causing subsection or mountain building.
Down
  1. 1. The plastic, partially molten layer beneath the lithosphere on which plates move.
  2. 2. he solid, rigid outer shell of the Earth, comprising the crust and the uppermost part of the mantle
  3. 4. a tectonic plate margin where two plates slide horizontally past one another, neither creating nor destroying lithosphere