which factors can lead to a mass movement? check all that apply.\n\nsteep slopes\nremoval of…

which factors can lead to a mass movement? check all that apply.\n\nsteep slopes\nremoval of vegetation\ndeposition\nanimal activity\nearthquakes\nundercutting of a slope

which factors can lead to a mass movement? check all that apply.\n\nsteep slopes\nremoval of vegetation\ndeposition\nanimal activity\nearthquakes\nundercutting of a slope

Answer

Brief Explanations:

Mass movement, or mass wasting, is the downslope movement of rock, soil, and debris primarily due to gravity. Several factors contribute to this process by either increasing the stress on a slope or decreasing its stability:

  • Steep slopes: Gravity has a stronger effect on steeper inclines, making materials more likely to slide.
  • Removal of vegetation: Roots help bind soil together and plants absorb excess water; removing them weakens the slope's structural integrity.
  • Earthquakes: Seismic waves create vibrations that can instantly trigger the collapse of unstable slopes.
  • Undercutting of a slope: Removing the base of a slope (through natural erosion or human excavation) leaves the upper portion unsupported.
  • Animal activity: While usually a minor factor, burrowing animals can destabilize soil and create pathways for water, contributing to movement.
  • Deposition: This is the process of dropping sediment, which is a result of erosion/transportation rather than a primary trigger for mass movement.

Answer:

  • steep slopes
  • removal of vegetation
  • animal activity
  • earthquakes
  • undercutting of a slope