structure of the earth
Across
- 1. seismic wave that travels only through solids
- 2. portion of the earth's interior extending from the outer core to the bottom of the crust
- 6. the crust beneath the oceans
- 7. liquid layer of the earth's core that surrounds the inner core
- 9. the crust on which the continents rest
- 11. the outermost, rigid layer of the earth composed of the stiff upper layer of the mantle and crust
- 12. central portion of the earth
- 13. boundary between the mantle and the crust
- 14. solid center of the earth
Down
- 1. wave of energy that travels through the earth
- 3. fastest seismic wave, which travels through solids, liquids, and gases
- 4. the circular movement of heated materials to a cooler area and cooled materials to a warmer area
- 5. area around the earth that is affected by the earth's magnetic field
- 8. the thin, hard outer layer of the earth
- 10. the layer of the upper mantle composed of low-density rock material that is semiplastic