Across
- 1. WAVES,A type of seismic wave.
- 5. A flow of heat within the mantle that drives plate tectonics.
- 6. A very hard and heavy metal
- 9. Igneous rock that is the main component of continental crust
- 10. core,The Earth's liquid metallic layer
Down
- 2. Earth's solid, dense, metallic center.
- 3. A rock composed of iron and nickel, found in Earth's core.
- 4. holes drilled into the earth for extraction of fossil fuels.
- 7. The Earth's outermost layer
- 8. The Earth's layer between the crust and the outer core