Science

1. Those that rise higher than the rest of their surroundings
3. Scientific study of landforms and the processes that shape them
4. The innermost layer of the earth
8. Elevated portion of lands that are formed by geologic activities such as faulting
9. Mounds or small hills made up of sand
12. Defined as the natural physical features on the surface of the earth
13. Low-lying triangular area located at the mouth of rivers where it meets an ocean, seas, or estuaries
15. Those that underwent sedimentation, erosion, or deposition on the river bed
18. High rocky coasts that plunge down to the edge of the sea
20. Lies in between the crust and lower mantle
21. Flat and broad land areas that have no great changes in elevation when measured with reference to the mean sea level

2. Formed by the chemical and mechanical action of the wind
5. Created from exclusively erosional and weathering activities
6. Results of the actions of the glaciers
7. The outermost layer of the earth
10. Portion of lands elevated thousands of feet above their surroundings
11. A predominantly silt-sized sediment formed by the accumulation of windblown dust
14. Deep ravine between cliffs that is often carved from the landscape by a river, wind, or glacier
16. Is just underneath the upper mantle
17. A bend in a sinuous watercourse of river
19. A piece of land that projects into a body of water and is connected to the mainland by an isthmus