True/False Indicate whether the sentence or statement is true or false. |
| 1. | The method of observing soil profiles by using power tools to remove a vertical section of the top of a hill is called boom howard method. |
| 2. | Dense glacial till is compact soil material that is tightly bound together and seldom found in Ohio soils. |
| 3. | A fragipan is a loamy subsoil horizon that is compact and usually shows strong mottling. |
| 4. | There are 3 general classes of landforms used in the Ohio Urban Land Judging scorecard. |
| 5. | Bedrock below 60 presents construction problems for buildings with basements and septic tank fields. |
| 6. | Three feet of rise or fall in 100 ft. of horizon distance would be a 3% slope. |
| 7. | The color of subsoil is the best indicator of air and water movement in the subsoil. |
| 8. | A claypan is dense, compact layer in the topsoil. |
| 9. | Slope greater than 6% can create erosion hazards that will wash out Driveways. |
| 10. | Slope is a feature of the landscape that largely determines the design of a septic system. |
| 11. | Permeability refers to the ability of a soil to evaporate water. |
| 12. | Subsidence is the loss in volume that mucks undergo when they oxidize or dry. |
| 13. | Clayey subsoils shrink when wet and swell when dry. |
| 14. | Footslopes are the steeper parts of a hill between the summit and base. |
| 15. | Soils subject to flooding are often identified by distinct horizons or layers. |
| 16. | Soils with shallow depth to the water table are said to have high water tables. |
| 17. | When more than 60% of the subsoil immediately below the B horizon is gray, the soil should be considered as having a seasonal high water table less than 12 inches. |
| 18. | The fluid discharge of septic fields is called effluent. |
| 19. | Groups of landforms are called landscapes. |
| 20. | Of the three primary soil particles, sand is the largest with a .002 to .08 diameter |
| 21. | Soils having sandy, clayey, or muck subsoils textures have severe limitations for landscaping. |
| 22. | A profile is a cross section of soil from the surface downward to the parent material. |
| 23. | Good sites for building with basements have a seasonal high water table or bedrock with in 40 inches. |
| 24. | Imperfectly drained soils usually have mottles or mixtures of gray, yellow and brown. |
| 25. | Soil slippage generally occurs on slopes less than 12 percent. |