Across
- 2. a substance that flows freely but is of constant volume, having a consistency like that of water or oil.
- 7. formed when folding on layers within the upper part of the Earth's crust.
- 8. a long, seismically active submarine ridge system situated in the middle of an ocean basin and marking the site of the upwelling of magma associated with seafloor spreading.
- 10. Volcanic mountains consist of – Magma chamber, Vent, Lava, Crater, and pyroclastic flow. Volcanic soil or the soil around a volcanic mountain is very fertile.
- 11. layer below the lithosphere
- 13. outer layer
- 16. is a stream of fluid propelled by thermal convection
Down
- 1. a large elongated depression with steep walls formed by the downward displacement of a block of the earth's surface between nearly parallel faults or fault systems.
- 3. a curved chain of volcanic islands located at a tectonic plate margin, typically with a deep ocean trench on the convex side.
- 4. is a hot, dense ball of (mostly) iron
- 5. outer part of the earth
- 6. the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
- 9. a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements
- 12. a super continent
- 14. narrow ditch
- 15. theorist of the continental drift theory