Across
- 2. A massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere
- 7. A super continent that existed during the late Paleozoic and early Mesozoic eras, it began to break apart about 175 million years ago
- 8. A solid mineral material forming part of the surface of the Earth
- 11. A piece of continental crust and a piece of oceanic crust collide
- 13. A boundary that occurs when two tectonic plates move together
- 14. Movement in the mantle that causes tectonic plates to move
- 15. How many layers of the Earth are there?
- 16. A break in the rocks that make up Earth's crust
- 19. The formation of new areas of oceanic crust, which occurs through the upwelling of magma at midocean ridges and its subsequent outward movement on either side
- 20. How many different convergent boundaries are there?
Down
- 1. Two pieces of oceanic crust collide
- 3. The sideways and downward movement of the edge of a plate of the Earth's crust into the mantle beneath another plate
- 4. Hanging wall rises relative to the footwall
- 5. A boundary that occurs when two tectonic plates slide past each other
- 6. A boundary that occurs when two tectonic plates move apart from each other
- 9. Two pieces of continental crust collide
- 10. The theory that proposed that the Earth had once been joined and over time drifted apart
- 12. Hanging wall moves down relative to the footwall
- 17. How many centimeters do tectonic plates move per year
- 18. A sudden and violent shaking of the ground, sometimes causing great destruction