Across
- 2. Melted or molten rock material beneath Earth's surface; cools slowly to form rocks with larger crystals
- 4. The process in which a denser plate is pushed downward beneath a less dense plate when plates converge
- 7. A place where two tectonic plates move away from each other
- 8. Huge pieces of crust that slowly move on the upper part of the mantle
- 9. A depression of Earth's surface in which an ocean lies
- 10. A phenomenon by which magma from Earth's mantle comes up at the mid-ocean ridge and creates new oceanic crust
Down
- 1. Molten rock, or magma, that has reached Earth's surface by volcanic action
- 3. An underwater mountain system formed by plate tectonics; the largest single volcanic feature on Earth
- 5. The thin, solid, outermost layer of Earth; is either continental (landmasses) or oceanic (ocean floors)
- 6. Deep and narrow depression in the seafloor where the subducted plate moves into the asthenosphere