Across
- 4. Plates come together, or converge
- 5. When magma reaches the surface
- 6. The stress force that pulls on the crust and thins rock in the middle and pulls two plates apart.
- 10. A plate boundary where two plates move past each other in opposite directions
- 11. these form along the boundaries of Earth's plates
- 12. The stress force that squeezes rock like a giant trash compactor until it folds or breaks.
- 14. A plate boundary where two plates move apart or away from each other.
- 15. The name that Alfred Wagener gave the super continent that broke apart 200 million years ago and gave rise to today's continents
- 16. A German scientist who proposed the theory of continental drift.
- 17. A string of volcanoes that form as the result of subduction of one oceanic plate beneath a second oceanic plate.
- 18. An area where material from deep within Earth's mantle rises through the crust and melts to form magma, eventually leading to the formation of a volcano.
Down
- 1. A mountain that forms in the Earth's crust when molten material, or magma, reaches the surface.
- 2. A theory stating that the Earth's plates are in slow, constant motion, driven by convection currents in the mantle.
- 3. The movement of rock within the mantle where hot rock rises and cooler rock sinks
- 7. A molten mixture of rock-forming substances, gases, and water from the mantle.
- 8. One major belt of volcanos along the coasts of North and South America and those in Japan and the Philippines.
- 9. The idea, created by Alfred Wegener, that the continents slowly moved across the Earth's surface
- 13. The fault cuts through the rock at an angle, so that one block of rock sits over the fault, while the other block lies under the fault