plate tectonics

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Across
  1. 3. Spreading Process at mid-ocean ridges where new oceanic crust is created by magma.
  2. 4. Plate Massive irregularly shaped slabs of solid rock that make up the lithosphere.
  3. 5. The plastic partially molten layer beneath the lithosphere on which plates move.
  4. 6. The rigid outer shell of Earth including the crust and upper mantle divided into tectonic plates.
Down
  1. 1. Convection Hotter magma rises while cooler denser magma sinks driving plate motion.
  2. 2. Boundary Area where two plates collide forming mountains or subduction zones.