Science

7. A deep ravine between cliffs that is often carved from the landscape by a river, wind, or glacier.
8. Study of the current terrain features of a region.
11. Bend in a sinuous watercourse of river.
12. Low-lying triangular area located at the mouth of rivers.
13. Last and innermost layer of Earth.
16. Piece of land that projects into a body of water and is connected to the mainland by an isthmus.
17. Outermost layer of the Earth.
19. Small hills made up of sand measuring between 1-10m high.
20. A predominantly silt-sized sediment formed by the accumulation of windblown dust.
21. scientific study of landforms and the processes that shape them.

1. Largest layer of Earth.
2. Flat and broad land areas that have no great changes in elevation when measured with reference to the mean sea level.
3. A flat-topped hill and steep sides and are formed in and to semi-arid desert conditions.
4. Also known as table lands or flat-topped mountains.
5. Landforms that area controlled by geological processes that form them and continually act on them after their formation.
6. Natural physical features on the surface of Earth.
9. Outer solid part of the planet include Earth's crust as well as the rigid upper part of the mantle.
10. Greek god of the winds.
14. Study of the flow of matter primarily in the liquid state.
15. Elevated portions of lands that are formed by geologic activities.
18. Low-lying area of land situated between hills or mountains.