Across
- 5. When two tectonic plates move away from each other, it is called?
- 6. What type of boundary is this: two tectonic plates slide past each other.
- 7. When magma rises through the lithosphere to the bottom of the ocean and forms a undersea volcano which eventually rises to the surface of the Earth, creating a volcanic island.
- 8. Conventional currents flow in the mantle, and a product of this is Earth's magnetic field. What is this idea called?
- 12. The idea that the continents moved (and still are moving) away from one another slowly.
Down
- 1. What is it called when two tectonic plates run head on and one goes beneath the other.
- 2. When one edge of a tectonic plate goes beneath another, sinking into the mantle.
- 3. The process in which magma rises, cools, and moves along the ocean floor. The newest rock being right by the mid-ocean ridge, and the rock becoming older as you go farther from the mid-ocean ridge.
- 4. Something which is formed when Earth's lithosphere pulls apart.
- 9. The idea that the lithosphere is split up into large, moving plates (consisting of both continental and oceanic crust).
- 10. This is formed where one tectonic plate goes under another. They are also the deepest parts of the ocean.
- 11. A chain of underwater volcanoes that forms when two plates more away from each other.