What is the primary natural force driving the movement of soil or rock in a landslide?

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AWind pressure

BWater buoyancy

CGravity

DMagnetic forces

Answer:

The primary natural force driving the movement of soil or rock in a landslide is gravity.

Gravity's Role: Gravity constantly pulls all material, including soil and rock, downwards.
Slope Instability: A landslide occurs when this gravitational force, acting on a slope, overcomes the resisting forces (like friction and the internal strength of the material) that hold the slope together.

Related Questions:

Which of the following statements accurately describes a landslide?

A landslide is primarily the movement of soil or rock down a slope, driven by gravity.
The speed of a landslide is always rapid and destructive, leaving no time for evacuation.
The term 'landslide' exclusively refers to the downward movement of soil, not rock materials.
Landslides encompass any downward and outward movement of natural slope materials, including both rock and soil.

Consider the following statements regarding the key characteristics of earthquakes:

Earthquakes strike suddenly, and their exact timing cannot be accurately predicted with current technology.
Regions prone to earthquakes are typically well-known due to distinct geological features and historical seismic activity.
Advanced scientific methods now allow for reliable forecasting of earthquake occurrences within a narrow time frame.