Across
- 3. red-hot melted rock that has erupted above the Earth’s crust from deep underground
- 6. an instrument used to track seismic waves travelling through the Earth
- 8. a mountain or hill, typically conical, having a crater or vent through which lava, hot vapor and gas are have erupted from the Earth's crust
- 9. sudden violent shaking of the ground, typically causing great destruction, as a result of movements within the Earth's crust or volcanic action
- 13. the process whereby rocks are worn away through the action of wind and rain
- 15. a theory that the Earth’s crust and the solid top part of the mantle are broken up into sections that fit together but move against each other
- 16. a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic crust
Down
- 1. melted rock inside the Earth’s mantle
- 2. a surge of energy travelling out from an earthquakes source through the Earth
- 4. an idea that has been suggested and may be true but has not yet been proven
- 5. the process in which continents slowly move over time on the surface of the Earth
- 7. cracks in the rocks that make up the Earth’s crust
- 10. when two plates move towards or meet each other
- 11. to send out rock, lava and ash in a sudden explosion
- 12. a bowl-shaped geological formation at the top of a volcano or the cup-shaped depression or cavity on the surface of the Earth
- 14. a process in which a heavier oceanic plate slides under a lighter continental plate