Across
- 2. Molten rock beneath the Earth's surface
- 3. The rigid outer layer of the Earth, broken into tectonic plates
- 5. A sudden glacial flood caused by a glacier on top of or near a volcano melting due to the heat from the eruption
- 6. The force due to the weight of a subducting plate, aiding movement (4,4)
- 7. A mixture of gases and rock fragments, at high temperatures travelling at rapid speeds (11,4)
- 8. The upper mantle layer of the Earth. It is semi-molten and approximately 2000km wide
- 9. The process of one plate sinking beneath another at a convergent plate boundary
- 10. A high-temperature, low-viscosity magma type
Down
- 1. A region of the subducting plate where most destructive margin earthquakes originate (7, 4)
- 2. The boundary between the crust and the mantle
- 4. The study of past changes in the Earth's magnetic field, evidence for seafloor spreading
- 11. A flow of mud and debris