Chapter 7 Mass Wasting
Which of the following is the most rapid form of mass wasting? 07.01 Which of the following is the most rapid form of mass wasting? Rock fall Rock slide Creep Earthflow Slump
Which of the following is the most rapid form of mass wasting? 07.01 Which of the following is the most rapid form of mass wasting? Rock fall Rock slide Creep Earthflow Slump
07.02 Which of the following is the most important driving force in landslides? Weight Friction Cohesion Viscosity Shear strength
07.02 Which of the following is the most important driving force in landslides? Weight Friction Cohesion Viscosity Shear strength
Which situation would contribute to a potential soil slip? 07.03 Which situation would contribute to a potential soil slip? Unconsolidated soil on top of bedrock Materials with differing permeabilities on top of each other An increase in steepness of a slope covered with soil A drought on a slope with thin soil Planting of native grasses on a previously bare hillside
Which situation would contribute to a potential soil slip? 07.03 Which situation would contribute to a potential soil slip? Unconsolidated soil on top of bedrock Materials with differing permeabilities on top of each other An increase in steepness of a slope covered with soil A drought on a slope with thin soil Planting of native grasses on a previously bare hillside
07.04 Which of the following human activities can decrease the incidence of mass wasting? Grading surfaces to increase the slope Improving drainage from the slope Removing vegetation such as trees and grass from the slope Cutting into the base of slopes in order to build houses Road construction on the slope
07.04 Which of the following human activities can decrease the incidence of mass wasting? Grading surfaces to increase the slope Improving drainage from the slope Removing vegetation such as trees and grass from the slope Cutting into the base of slopes in order to build houses Road construction on the slope
How do drains help to prevent landslides? 07.05 How do drains help to prevent landslides? Drains keep water at the surface, so it only saturates the upper part of the slope. Drains divert water away from the slope. Drains pull water deeper into the base of the slope. Drains anchor the soil to the ground, keeping it from sliding. Drains do not prevent landslides.
How do drains help to prevent landslides? 07.05 How do drains help to prevent landslides? Drains keep water at the surface, so it only saturates the upper part of the slope. Drains divert water away from the slope. Drains pull water deeper into the base of the slope. Drains anchor the soil to the ground, keeping it from sliding. Drains do not prevent landslides.
07.06 Downslope movements are classified according to all but one of the following variables: The amount of development present The mechanism of movement Type of earth material Amount of water present Rate of movement
07.06 Downslope movements are classified according to all but one of the following variables: The amount of development present The mechanism of movement Type of earth material Amount of water present Rate of movement
What method is applied to assess the stability of a slope: 07.07 What method is applied to assess the stability of a slope: Determining relationship between steepness and the location of development Examining participation data Determining relationship between driving forces and resisting forces Determining amount of vegetation present All the above are correct.
What method is applied to assess the stability of a slope: 07.07 What method is applied to assess the stability of a slope: Determining relationship between steepness and the location of development Examining participation data Determining relationship between driving forces and resisting forces Determining amount of vegetation presen. All the above are correct.
What are the two basic patterns of movement for slides? 07.08 What are the two basic patterns of movement for slides? Vertical and translational Rotational and translational Vertical and rotational Soil creep and rotational None of the above are correct.
What are the two basic patterns of movement for slides? 07.08 What are the two basic patterns of movement for slides? Vertical and translational Rotational and translational Vertical and rotational Soil creep and rotational None of the above are correct.
The ability of the earth material to transmit water is know as? 07.09 The ability of the earth material to transmit water is know as? Solubility Permeability Water transferability Percolating None of the above are correct.
The ability of the earth material to transmit water is know as? 07.09 The ability of the earth material to transmit water is know as? Solubility Permeability Water transferability Percolating None of the above are correct.
Why do people chose to live in landslide areas? 07.10 Why do people chose to live in landslide areas? Slide risk is not known. Economic pressures Lack of adequate development regulations Housing there is usually cheaper. Flatter land in many areas has already been overbuilt.
Why do people chose to live in landslide areas? 07.10 Why do people chose to live in landslide areas? Slide risk is not known. Economic pressures Lack of adequate development regulations Housing there is usually cheaper. Flatter land in many areas has already been overbuilt.