Across
- 2. A thick layer of hot solid rock inside the Earth, beneath the crust and above the core.
- 5. Melted rock (magma) from inside the Earth comes up at underwater mountain ranges, cools to form new ocean floor, and then pushes the older floor away in both directions, making the ocean wider.
- 7. Are massive, rigid slabs of Earth's Lithosphere that constantly move, driven by heat from the Earth's interior, resulting in earthquakes, volcanoes, and mountain building at their boundaries.
- 8. The rigid outer part of the Earth, consisting of the crust and upper mantle.
Down
- 1. Is the thin, heavy, rocky layer of Earth that forms the ocean floor, it's much younger than the land crust.
- 3. Is a geological area where two tectonic plates collide, forcing the denser plate (usually oceanic) to slide beneath the other and sink into the Earth's mantle.
- 4. Earth's thick, buoyant, silica-rich outer layer forming landmasses.
- 6. A long, narrow, low-lying area on Earth's surface, formed when the continental crust pulls apart at divergent tectonic plate boundaries, causing a block of land to sink.