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Across 3. layer that is a little bit of crust and mantle and floats on the asenthosphere 4. soft layer of the mantle 5. molten rock under the ground 7. when one plate sinks beaneath the other 8. process in which rocks are move to new locations 11. model that decribes how rocks slowly change form 15. process that breaks down rock through chemical changes 17. a plate boundary where plates move towards each other 19. outter most layer of the earth 20. process in which

Down 1. type of weathering in which a rock is physically broken down 2. molten rock above ground 6. thickest layer of the earth 9. a type of rock that usally contains fossils 10. a dense ball of solid iron in the center of earth 12. all the continents that form one super continent 13. forms when heat and pressure or fluids act on igneous and sedimentary 14. discovered evidence of the super continent pangea 16. cooled lava or magma 18. a layer of molten rock iron and nickle that surrounds the inner core