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Across 1. - an instrument for measuring earthquake vibrations 4. hot molten rock found at great depths below the Earth’s surface 6. a rock that looks exactly like the original shell, bone or piece of wood 10. the break in the Earth’s crust along which rock moves 11. people who study the Earth 14. hot molten rock that flows onto the Earth’s surface 15. the remains and traces of prehistoric organisms 17. Pure substance that cannot be broken down into other substances 22. type of rock formed by the cooling of molten rock 23. measures the magnitude of an earthquke 27. Ten minerals ranked in order of hardness against when all minerals are compared 28. rock formed by lava that cooling on the surface of the earth 30. the point on the Earth’s surface above the focus, from which earthquakes originates

Down 1. a visual record of earthquake vibrations 2. A general rule that determines the relative age of sedimentary rock 3. a type of rock formed below the Earth’s surface when a rock is altered 5. a cavity made by the imprint of an organism or its tracks 7. horizontal layers of rock caused by the slow accumulation of sediments 8. the thickest layer of the Earth 9. the point underground where the energy is first released to cause an earthquake 12. type of fossil made when sediment slowly fills a mould 13. The age of someone or something compared with the age of someone or something else 16. vibrations spreading out from the earthquakes focus 18. type of rock formed by the slow accumulation of small fragments of rock 19. An exact date that can be given in years 20. - the opening in a volcano where the lava flows through 21. shell of rock around the surface 24. rock formed from magma that cooled and hardened below the surface 25. bending and tilting of sedimentary rock layers 26. pure, naturally occurring solid material made up of a combination of 2 or more elements 29. combination of two or more minerals in various protection