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Across 5. When a volcano has been inactive for some time 6. Where two or more plates meet. (2 Words) 7. Crust that is old, thick and light. (2 Words) 9. The boundary where two plates move away from each other (3 Words) 17. Word used to describe molten rock once it is above the surface 20. A volcano that is formed from layers of ash and solidified lava (2 Words) 22. Fold mountain range spanning the East Coast of S.America 23. Machine used to measure the size of an earthquake

Down 1. Crust that is new, thin, dense and heavy. (2 Words) 2. The boundary where two plates run alongside each other (3 Words) 3. A way of measuring the size of an earthquake based upon the damage it causes (2 Words) 4. Country hit by an earthquake that occurred on the 13th January 2010 5. The boundary where two plates move towards each other (3 Words) 8. A section of the Earth's crust that moves (2 Words) 10. A volcano that erupts more than 1000m3 of ash 11. A big wave caused by an earthquake 12. Shock waves generated from earthquakes (2 Words) 13. Mountain ranges found along destructive or collision plate boundaries (2 Words) 14. A volcano that is wide due to runny lava. (2 Words) 15. A volcano that erupted on the 18th May 1980 (3 Words) 16. When the ground shakes rigorously due to movements in the tectonic plates 18. The place on the surface that is directly above the focus 19. Where supervolcanoes are found 21. The hot layer of magma between the crust and the core of the Earth