which of the following ussually causes creep?
volcanic activity
low water content
plate tectonics***
freezing and thawing of water beneath the soil.
then what's the answer, i gotta get this test turned in and i dont have time to read and figure it out
Creep is caused by the interaction of multiple factors, but heaving is likely the most important process. Heaving involves the expansion and contraction of rock fragments, and occurs during cycles of wetting and drying, as well as freezing and thawing. As expansion occurs, particles move outward, perpendicular to the hillside.
If you read what google said. IT SAYS THAWING AND FREEZING
actually brain dead.
It is A I think
The usual cause of creep among the options you provided is plate tectonics.
To understand this, let's break down the options:
1. Volcanic activity: Volcanic activity involves the movement of molten rock (magma) onto the Earth's surface. While volcanic activity can cause ground deformation and sometimes landslides, it is not directly related to creep.
2. Low water content: Low water content in the soil generally does not contribute to creep. In fact, it is often high water content that plays a role in certain types of mass wasting, such as mudslides or debris flows.
3. Plate tectonics: Plate tectonics is the movement of large sections of the Earth's crust (tectonic plates) over the underlying semi-liquid mantle. As these plates interact, they can create stress and pressure on the rocks along their boundaries. Over time, this stress can cause gradual movement and deformation. Creep refers to slow and continuous movement of rocks and soil along faults or slopes. Plate tectonics can generate these conditions and lead to creep.
4. Freezing and thawing of water beneath the soil: While freezing and thawing of water beneath the soil can contribute to other forms of mass wasting (e.g., frost heaving), it is not typically associated with causing creep.
Therefore, the correct answer from the given options is plate tectonics.