Across
- 5. denser part of the thinnest Earth layer
- 9. Layer in a molten state surrounding the inner core
- 10. waves scientists use to study the Earth's layers.
- 12. solid ball in the center of the Earth
Down
- 1. the less dense part of the thinnest layer of the earth
- 2. Largest layer of the Earth
- 3. Element that makes up about 10 percent of the inner core
- 4. chunks of meteoroids we use to study the layers of the earth
- 6. Element that makes up most of the inner core
- 7. cycles of heat that occur in the mantle
- 8. how we got 8 miles deep into the surface of the earth
- 11. Thinnest and least dense layer of the Earth