a cone-shaped rock structure formed by slow precipitation of calcite found on the floor of a limestone cave

• stalagmite
• aquifer
• stalactite

• sinkhole

• kettle lake

the top of the zone of saturation in a layer of rock or soil

• water table
• aquifer
• aquitard
• thermocline

• kettle lake

an area of rocks with low porosity and permeability that contains and transmits very little groundwater

• aquitard
• aquifer
• stalagmite

• kettle lake
• thermocline

a term describing a lake that contains few nutrients and sustains relatively few living organisms

• oligotrophic
• permeability

• runoff

• eutrophic
• kettle lake

any body of rock or sediment that can yield economically significant amounts of water

• aquifer
• aquitard
• sinkhole

• kettle lake
• lake

an icicle-like rock feature formed by slow precipitation of calcite found on the ceiling of a limestone cave

• stalactite
• porosity

• thermocline

• stalagmite

• kettle lake

a body of standing water formed from the impression of a large piece of glacial ice, once embedded in sand and gravel, that melted after the glacier’s retreat

• kettle lake
• aquifer
• sinkhole

• oligotrophic

• lake

the mixing of layers of water that occurs in a lake during the breakdown of thermal stratification in spring and fall

• turnover
• aquifer
• oligotrophic

• eutrophic
• stalactite

the ability of rock or soil to allow water or other fluids to pass through it

• permeability
• aquifer
• porosity

• runoff

• kettle lake

a large inland body of standing water

• lake
• aquifer
• aquitard
• eutrophic
• kettle lake