Plate Tetonics

1. any trace of an ancient organism that has been preserved in rock
4. layer of rock that forms Earth's outer skin
5. when magma reaches the surface
8. a fold in rock that bends upward into an arch
11. the process by which molten material adds new oceanic crust to the ocean floor
13. stress that stretches rock so that it becomes thinner in the middle
14. is a rock that usually is a light color and has a coarse texture
15. stress that squeezes rock until it folds or breaks
16. a device that records ground movement caused by seismic waves as they move through earth
19. a large area of flat land elevated high above sea level

2. a fold in rock that bends downward to form a valley
3. the molten mixture of rock-forming substances, gases, and water from the mantle
6. a weak spot in the crust where molten material, or magma, comes o the surface
7. an undersea mountain chain where new ocean floor is produced
9. a giant wave usually caused by an earthquake beneath the ocean floor
10. a fountain of water and steam the erupts from the ground
12. stress that pushes masses of rock in opposite directions
15. a huge hole left by the collapse of a volcanic mountain
17. a layer of hot rock in the earth's interior
18. supercontinent