Across
- 2. large super continent that existed 250 million years ago.
- 6. Type of volcano that is almost entirely made of magma and lava
- 8. hot molten rock above the Earth's surface
- 9. the part of the Earth that contains most of Earth's mass
- 10. the part of the Earth that is made of iron and nickel
- 11. Small volcanoes made from ash and rocks.
- 15. area where magma from the mantle continually breaks through the crust
- 16. earths crust made of land
- 18. plates the two sub-layers of the earth that float causing volcanoes and Earth Quakes
- 20. a sudden and violent shaking of the Earth as a result of movements within the earth's crust
Down
- 1. large pieces of Earth's crust that move due to convection currents
- 3. Volcanic gases can block out the sunlight causing what?
- 4. when two oceanic plates pull apart, magma rises and new crust is formed
- 5. earths crust located under the ocean
- 7. the composition of the magma determines its what of the volcano?
- 12. technical name for crust and upper mantle
- 13. Flows fast flowing clouds of hot ash and volcanic glass rolling down the mountainside
- 14. Explosive eruptions followed by outpourings of lava
- 17. A mountain that forms when magma is forced to the Earth's surface
- 19. hot fluid that is under the Earth's surface