Plate Boundries

2. Molten rock when it is underground
4. The solid part of the earth consisting of the crust and the outer mantle
6. A supercontinent that existed 250 million years ago which included most of the earth's continental ladmasses
9. A vent in the crust of the Earth from which molten rock, ask and steam are ejected
10. A sudden movement of the earth's crust caused by stress along a geologic fault
11. Continental land masses the move relative to one another
12. Innermost part of the earth
14. Plates that are moving away from each other
17. When one plate is forced beneath another into the mantle

1. An area of stress in the earth where broken rocks slide past each other causing a crack in the Earth’s surface
3. Plates that slide horizontally against each other
5. Plates that are moving toward each other
7. Part of the earth that goes around the core and is solid
8. What is magma called when it reaches the surface of the Earth?
13. The process of wearing away or grinding something down
15. Rock that is formed when magma cools and hardens
16. The outermost shell of the earth