Crossword puzzle

6. The relatively flat area of land adjacent to a river that is periodically covered by water during floods.
7. An upward-growing mineral deposit on the floor of a cave, formed by dripping water from the ceiling.
9. A landform, often triangular, created where a river enters a standing body of water (like an ocean or lake) and deposits its sediment.
10. A U-shaped body of water formed when a wide meander is cut off from the main river channel.
11. Water that flows over the ground surface rather than soaking into the soil.
12. Water that has soaked into the ground and is stored in the pores of soil and rock layers.
14. A permanent channel through which water continually flows downhill.
15. A long period of reduction in the temperature of the Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and glaciers.

1. A wide, fan-shaped deposit of sediment formed where a steep stream leaves a mountain range and flows onto a flatter plain.
2. A large, deep channel in the soil formed by erosion from heavy runoff; it is much larger than a rill.
3. A loop-like, sinuous curve or bend in the course of a river caused by lateral erosion and deposition.
4. A landscape characterized by sinkholes, caves, and underground drainage, typically formed in regions with soluble bedrock like limestone.
5. a tiny groove or channel in the soil created as runoff travels downhill.
8. A smaller stream or river that flows into and feeds a larger main river.
13. An icicle-shaped mineral deposit (usually calcium carbonate) that hangs from the ceiling of a cave.