How does the study of soils help evaluate natural hazards?

2. How does the study of soils help evaluate natural hazards? You cannot evaluate natural hazards just from the soil. The chronology of deformed earth materials from faulting has led to better calculations of earthquake recurrence intervals. All of these are ways that scientists have used soils in evaluation of natural hazards. The frequency of landslides can be estimated from the relative age of the soils. Soil properties can help delineate natural floodplains.

3. How does the study of soils help evaluate natural hazards? You cannot evaluate natural hazards just from the soil. The chronology of deformed earth materials from faulting has led to better calculations of earthquake recurrence intervals. All of these are ways that scientists have used soils in evaluation of natural hazards. The frequency of landslides can be estimated from the relative age of the soils. Soil properties can help delineate natural floodplains.

4. How can the color of the soil help in possible hazard risk assessment? Red soil usually signifies it is well - drained, which can lead to lower slope instability. Yellow soil usually signifies it is well - drained, which can lead to higher slope instability. Red soil usually signifies it is poorly drained, which can lead to lower slope instability. Red soil usually signifies it is poorly drained, which can lead to higher slope instability. Yellow soil usually signifies it is poorly drained, which can lead to lower slope instability.

5. How can the color of the soil help in possible hazard risk assessment? Red soil usually signifies it is well - drained, which can lead to lower slope instability. Yellow soil usually signifies it is well - drained, which can lead to higher slope instability. Red soil usually signifies it is poorly drained, which can lead to lower slope instability. Red soil usually signifies it is poorly drained, which can lead to higher slope instability. Yellow soil usually signifies it is poorly drained, which can lead to lower slope instability.

6. If the pore spaces in the soil are completely filled with water, the soil is solid. saturated. structurally weak. unsaturated. moisture rich.

7. If the pore spaces in the soil are completely filled with water, the soil is solid. saturated. structurally weak. unsaturated. moisture rich.

8. Subsidence is commonly associated with All these are associated with subsidence. color of the soil. size of the soil particles. mining of the soil. dissolution of soluble rocks beneath the surface.

9. Subsidence is commonly associated with All these are associated with subsidence. color of the soil. size of the soil particles. mining of the soil. dissolution of soluble rocks beneath the surface.

11. The figure shown, with rolling hills and alternating areas of subsidence and undisturbed land, is an example of Subsidence topography. Karst topography. Palouse topography. None of the answers are correct. Sinkhole topography.

12. The figure shown, with rolling hills and alternating areas of subsidence and undisturbed land, is an example of Subsidence topography. Karst topography. Palouse topography. None of the answers are correct. Sinkhole topography.

13. What is the difference between solutional sinkholes and collapse sinkholes? Collapse sinkholes are more common. Solutional sinkholes form over caves. They develop in the same way. Collapse sinkholes are only found in North America. Collapse sinkholes develop when the surface or near - surface material falls into an underground cavern.

14. What is the difference between solutional sinkholes and collapse sinkholes? Collapse sinkholes are more common. Solutional sinkholes form over caves. They develop in the same way. Collapse sinkholes are only found in North America. Collapse sinkholes develop when the surface or near - surface material falls into an underground cavern.

15. Which of the following locations have climates that are favorable to cave formation? Louisville, KY Boston, MA Denver, CO Phoenix, AZ Anchorage, AK

16. Which of the following locations have climates that are favorable to cave formation? Louisville, KY Boston, MA Denver, CO Phoenix, AZ Anchorage, AK

17. Thermokarst has formed in the Arctic due to All of the answers are correct. disappearing streams. climatic warming in the past 5 decades. highly eroded karst landscapes. solutional sinkholes.

18. Thermokarst has formed in the Arctic due to All of the answers are correct. disappearing streams. climatic warming in the past 5 decades. highly eroded karst landscapes. solutional sinkholes.

19. How has human activity lead to an amplification of natural delta subsidence? Forced flooding of the area that moves sediment to the area Farm areas along the river that have fertilizer runoff Rebuilding marsh areas in the delta Building of homes along the riverbanks that contribute to pollution Building of levees and dams that prevent sediment to reach the delta

20. How has human activity lead to an amplification of natural delta subsidence? Forced flooding of the area that moves sediment to the area Farm areas along the river that have fertilizer runoff Rebuilding marsh areas in the delta Building of homes along the riverbanks that contribute to pollution Building of levees and dams that prevent sediment to reach the delta

21. Which has not been a cause of subsidence in the Mississippi Delta? • Withdrawal of natural gas • Cutting channels though levees • Starving the delta of new sediment and nutrients • Withdrawal of oil • Withdrawal of groundwater

22. Which has not been a cause of subsidence in the Mississippi Delta? • Withdrawal of natural gas • Cutting channels though levees • Starving the delta of new sediment and nutrients • Withdrawal of oil • Withdrawal of groundwater

23. Which is not an indication that there are expansive soils in an area? Wavy bumps on surfaces Depressions in the road Cracks in the driveway Upward movement of land surfaces Tilting signs and utility poles

24. Which is not an indication that there are expansive soils in an area? Wavy bumps on surfaces Depressions in the road Cracks in the driveway Upward movement of land surfaces Tilting signs and utility poles

25. Which is not an effect of subsidence and soil volume change? Wetland loss in deltas and bays Pollution of groundwater due to connections with surface water Increased groundwater - table levels to use during droughts Rupture of underground water lines Structure damage due to thawing of permafrost

26. Which is not an effect of subsidence and soil volume change? Wetland loss in deltas and bays Pollution of groundwater due to connections with surface water Increased groundwater - table levels to use during droughts Rupture of underground water lines Structure damage due to thawing of permafrost

27. How are climate change, subsidence, and soil volume change related? Global warming is primary cause of permafrost melting in the Arctic, which in turn releases greenhouse gases that could slow down climate change. Depletion of the delta wetlands due to subsidence decreases sea level rise. Warming temperatures decreases the need for groundwater mining. Global warming is the primary cause of permafrost melting in the Arctic, which in turn releases greenhouse gases that could speed up climate change. Sea level rise causes the subsidence of deltas and bays.

28. How are climate change, subsidence, and soil volume change related? Global warming is primary cause of permafrost melting in the Arctic, which in turn releases greenhouse gases that could slow down climate change. Depletion of the delta wetlands due to subsidence decreases sea level rise. Warming temperatures decreases the need for groundwater mining. Global warming is the primary cause of permafrost melting in the Arctic, which in turn releases greenhouse gases that could speed up climate change. Sea level rise causes the subsidence of deltas and bays.

29. Which is a natural service function of subsidence and soil volume change? Reducing delta wetlands Creating unique ecosystems Creating landfill areas Destroying caves There are no natural service functions of subsidence and soil volume change

30. Which is a natural service function of subsidence and soil volume change? Reducing delta wetlands Creating unique ecosystems Creating landfill areas Destroying caves There are no natural service functions of subsidence and soil volume change

31. What happens when humans withdrawal subsurface fluids, such as oil, natural gas, and water? Pumping out the liquid reduces support of the earth material. The earth material becomes more saturated. Pumping out the liquid causes the earth material to swell. The earth material expands due to air pockets that are created. Earth fissures decrease in size.

32. What happens when humans withdrawal subsurface fluids, such as oil, natural gas, and water? Pumping out the liquid reduces support of the earth material. The earth material becomes more saturated. Pumping out the liquid causes the earth material to swell. The earth material expands due to air pockets that are created. Earth fissures decrease in size.

34. The figure shows Jefferson Island and the salt mine and nearby oil drilling rig. What was the end result of this particular oil drilling location? The drilling blocked the airshaft to the mine resulting in its closure Salt contaminated the oil No oil could be removed due to the closeness to the mine The drilling penetrated the mine causing mine flooding, lake draining, and other damage The salt mines caused subsidence and resulted in damage to the drilling rig

35. The figure shows Jefferson Island and the salt mine and nearby oil drilling rig. What was the end result of this particular oil drilling location? The drilling blocked the airshaft to the mine resulting in its closure Salt contaminated the oil No oil could be removed due to the closeness to the mine The drilling penetrated the mine causing mine flooding, lake draining, and other damage The salt mines caused subsidence and resulted in damage to the drilling rig

36. What is a realistic way to minimize hazards from subsidence and soil volume change? Completely stop further subsidence of human settlements on delta plains Construct buildings on a compacted fill layer Installation of injection wells Restoration of drained organic soils or collapsed soils Stop all mining

37. What is a realistic way to minimize hazards from subsidence and soil volume change? Completely stop further subsidence of human settlements on delta plains Construct buildings on a compacted fill layer Installation of injection wells Restoration of drained organic soils or collapsed soils Stop all mining

38. The best adjustment to subsidence and soil volume change is to avoid building in the areas prone to these hazards. Why is this not possible? The areas shift over time. They get little media coverage so they are not well - studied. There is no way to identify high - risk areas. In the United States and Canada alone, there is a great portion of the land that is affected by at least one of the hazards. All of these are reasons it is not possible.

39. The best adjustment to subsidence and soil volume change is to avoid building in the areas prone to these hazards. Why is this not possible? The areas shift over time. They get little media coverage so they are not well - studied. There is no way to identify high - risk areas. In the United States and Canada alone, there is a great portion of the land that is affected by at least one of the hazards. All of these are reasons it is not possible.