Name: 
 

2005 District 7 Urban Soils Test



True/False
Indicate whether the sentence or statement is true orfalse.
 

 1. 

A clinometer can be used tomeasure soil texture.
 

 2. 

A terrace is an old flood plainand is subject to flooding.
 

 3. 

“Soil texture”refers to the breakdown of components in the soil.
 

 4. 

Subsoil is darker than topsoilin most soils.
 

 5. 

Some flood plains are verynarrow from side to side, whereas others may extend laterally for miles.
 

 6. 

Mottling  indicates thepresence of a fluctuating water table.
 

 7. 

Interceptor drains on slopesintercept lateral movement of water.
 

 8. 

In moist soils, micropores arefilled mostly with capillary water and do not permit much air movement.
 

 9. 

By USDA definition, muck andpeat are not soil textures, but soil materials that are found in some landscapes.
 

 10. 

The general recommendation forseptic tanks is to not locate absorption fields with 50’ of a stream or other body ofwater.
 

 11. 

For the most part, soilconditions in Ohio are relatively stable.
 

 12. 

Common types of soil structuresare prismatic, columnar, angular blocky, subangular blocky, platy and granular.
 

 13. 

Evapotranspiration is watertranspired by vegetation and waste collection systems.
 

 14. 

Clay particles are so smallthat they cannot be seen under an ordinary microscope.
 

 15. 

Frost action does little damageto roads, buildings and other structures and plant roots.
 

 16. 

The amount of water in the soildoes not affect stability.
 

 17. 

Soil materials are commonlymanipulated to increase soil strength.
 

 18. 

The average home in asubdivision produces approximately 500 gallons of wastewater per day.
 

 19. 

Available water capacity is thecapacity of soils to hold water for use by most plants.
 

 20. 

Septic tank absorption fieldsmust not be located closer than 100’ from a water well.
 



 
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