Earth and Engery

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Across
  1. 3. Tectonics- Outermost layer of the Earths crust that is broken into large pieces.
  2. 5. Thinnest, outermost layer of Earth; ranges from 5 to 100 km thick.
  3. 6. Spreading- A geologic process in which tectonic plates -large slabs of Earth's Lithosphere-split apart from each other.
  4. 7. Convection currents bring hot material from deeper within the mantle up toward the Earth's surface.
  5. 10. Boundary- Areas where tectonic plates meet.
Down
  1. 1. Layer of hot, solid material between the crust and earths core.
  2. 2. Soft layer of the mantle on which pieces of lithosphere slowly float.
  3. 4. Rigid layer consisting of the crust and the uppermost part of the mantle.
  4. 8. Core- Layer of the molten iron and nickel that surrounds the inner core.
  5. 9. Core- Dense sphere of solid iron and nickel at the center of the Earth.