Across
- 3. Earth's layers are composed of different types
- 6. Type of current within the mantle.
- 8. Earth's protection from solar winds.
- 11. Explains how Earth's layers move and behave.
- 12. Rock samples are a type of this evidence.
- 13. Most abundant element in the crust.
- 14. Thickest rocky layer of the Earth.
- 16. Seismic waves are a sample of this type of evidence.
- 17. Waves used in studying the interior of the Earth.
- 20. Deepest well drilled into the Earth.
Down
- 1. Outermost layer of the Earth
- 2. Explains what Earth is 'made of'.
- 4. Innermost layer of the Earth.
- 5. The liquid layer surrounding the inner core.
- 7. Crust is mainly composed of basaltic rock.
- 9. Most abundant metallic element in the core.
- 10. Crust is mainly composed of granitic rock.
- 15. The outermost rigid layer in the mantle.
- 18. A liquid-like layer in the upper mantle.
- 19. Boundary between the crust and the mantle.