Across
- 1. -scientific study of landforms and the processes that shape them
- 4. -deepest layer of the Earth.
- 5. -flat and broad areas that have no changes in elevation
- 6. -outer solid part of the planet.
- 8. -deep ravine between cliffs
- 9. -innermost layer of the Earth.
- 11. -study of the flow of matter primarily in the liquid state.
- 12. -4% of the mantle-crust mass, can be regarded as a ball of very hot metals.
- 14. -covers about 45% of Earth's land surface
- 15. -separates the crust from the mantle.
- 16. -natural physical features on the surface of Earth
- 20. -circulating current in which liquid iron moves in a rotational pattern which is believed to be the source of magnetic field of the Earth.
Down
- 2. -largest layer of the Earth.
- 3. -a change in a planet's magnetic field.
- 7. -innermost layer of the Earth separated into two parts.
- 10. -study of current terrain features of a region
- 13. -also called byland or biland
- 17. -low-lying area of land situated between hills or mountains
- 18. -formed by the accumulation of windblown dust
- 19. -greek god of the winds