Across
- 4. Transfers energy in the mantle
- 6. On Earth, it is composed of the crust and the portion of the upper mantle that behaves elastically on time scales of up to thousands of years or more.
- 7. A thin layer of crust that underlies the ocean basins.
- 8. A plate boundary is a three-dimensional surface
Down
- 1. Layer of rock which forms the continents
- 2. the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
- 3. A long chain of volcanoes that surround the Pacific Ocean.
- 5. where 2 arrows are facing the opposite direction