Springs form where ______
A - there is no water table
B - flooding makes streams overflow their banks
C - groundwater sinks into the soil
D - the water table intersects the ground surface


2 - groundwater contaminated by sewage from a ruptured septic tank can sometimes be naturally purified by flowing for a relatively short distance through a _____

A - sandstone aquifer
B - fractured limestone aquifer
C - cavernous limestone aquifer
D - spring where the water table intersects the ground surface

3 - A cavern is an underground chamber formed by _____

A - erosion
B - deposition
C - evaporation
D - runoff