Across
- 3. the idea that Earth's lithosphere is broken into several large pieces of land that move around on Earth's convecting asthenosphere.
- 5. the amount of force exerted per unit area of a surface.
- 6. theory that new seafloor is formed at a divergent plate boundary, when magma is forced upward toward the surface at a mid-ocean ridge.
- 7. enormous moving pieces of the Earths's lithosphere.
- 8. occur when plates slide and grind past one another along a fracture in the lithosphere.
- 10. an undersea mountain chain where new ocean floor is produced; a divergent plate boundary.
Down
- 1. a boundary where one plate usually made dense, oceanic crust- collides and sinks under less dense crust.
- 2. a navigational system involving satellites and computers that can determine the latitude and longitude of a receiver on Earth by computing the time difference for signals from different satellites to reach the receiver.
- 4. an area crated when cooler, denser fluid material sinks and the warmer, less dense fluid material rises to the surface
- 9. molten rock beneath the Earth's surface.