| Term | Definition |
|---|
| cavern | a natural cavity thatf orms in a rock as a result of the dissolution of minerals;;also a large cave that commonly contains many smaller, conecting chambers. |
| sinkhole | a circular depression that forms when rock dissloves, when overlying sediment fills an existing cavity, or when the roof of an ungerground cavern or mine collapses. |
| karst topography | a type of irregular topography that is characterized by caverns, sinkholes, and underground drainage and that forms on limestone or other soluble rock. |
| hard water | conatins relativley high concentrations of dissolved minerals, especially minerals rich in calcium, magnesium, and iron. |
| soft water | water that contains relativley low concentrations of dissolved minerals. |
| Gradient | Steepness of a slope. |
| Stalacite | Formation on the roof of a cavern. |
| Stalagmite | Formation on the fround or floor of a cavern. |
| Spring | Hot water heated my magma on the Earth's surface. |
| Artiesian well | A well that is slated so that the water is forced upward. |
| Well | Hole in the ground thats dug all the way to an aquifer beaneath the Earth. |
| Natural Bridge. | A natural bridge that forms when to close caverns collapse. |
| Geyser | A hole in the ground that spurts hot water and steam that is heated from magma in the Earth's crust. |
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