Layers of the Earth

12345678
Across
  1. 3. the boundary between crust and mantle
  2. 5. includes crust and upper mantle
  3. 6. discovered that Earth has a solid inner core
  4. 8. plays an important role in thermal and mechanical driving forces for plate tectonics.
Down
  1. 1. the proponent behind mantle convection theory
  2. 2. the type of crust that is found under the oceans.
  3. 3. hot molten rocks
  4. 4. beneath the lithosphere
  5. 6. outer core is made mostly of _____ iron and nickel.
  6. 7. coined the word "asthenosphere"