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Soil & Underground Water

Test Description: Wells,and Soil Formation

Instructions: Answer all questions to get your test result.

1) Sinkholes associated with natural processes are characteristic of what type of bedrock?

ABasalt BLimestone CGneiss DGranite

2) Organic matter in soil is made from

Acarbon dioxide Bdecayed plants and animals Cacid rain Dweathered parent rock

3) What is located beneath soil layers?

Alava Bhumus Ctundra Dbedrock

4) How do stalagmites and stalactities in caves develop?

AThey are granite intrusions that remain behind after water dissolves the surrounding limestone BThey are crystals that grow as water hollows out the cavern CThey are carbonate deposits formed by dripping water in air-filled cavities DThey are carvings made in limestone by the swirling water as it hollows out the cavern

5) Which layer of a soil profile would be affected the most by weathering and erosion?

ABedrock BHorizon B CHorizon A DHorizon C

6) The layer in the a soil profile that has the most humus is

AHorizon B BHorizon C CBedrock DHorizon A

7) Why does water move more slowly through clay than through humus?

AClay has very small pore spaces BClay reduces evaporation rates CClay has greater permeability DClay prevents capillary attraction of water

8) During droughts. lack of rain can lead to wells drying up. This is because the drought has lowered the

Awater trough Bwater table Czone of aeration Dzone of porosity

9) The water supply in a well will be most consistent in which of the following layers?

Aimpermeable layer Bbedrock Czone of aeration Dzone of saturation

10) Beginning at the surface, which of the water table zones below is the correct order?

Abedrock, aerated zone, saturated zone Bsaturated zone, aerated zone, bedrock Csaturated zone, bedrock, aerated zone Daerated zone, saturated zone, bedrock

*select an answer for all questions

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