This is the steepest angle at which loose material remains stationary without sliding

This is the most abundant weak acid involved in chemical weathering and soil formation

This type of weathering occurs when the internal structure of a mineral is altered.

This has the slowest rate of downhill movement of soil

This is the process where weathered rock is removed from one area and transported to another

This is the mechanical breakup of rock by the expansion of freezing water in cracks and crevices

This is the force that moves soil down a slope

The greater this is, the greater gravity will affect weathered rock or soil

The down slope movement of rock, regolith, and soil under the direct influence of gravity

This type of weathering breaks rock into smaller pieces without changing it chemically

Factors that affect this include climate, slope, and type of vegetation

This is a type of chemical weathering that affects the iron in rocks that contain silicate minerals

This is soil that develops on top of bedrock

This is the exposed, crescent shaped ruptured surface at the head of a slump

This is a block of unconsolidated regolith that slides downhill along a curved surface

This is the slow, downslope flow of water saturated material in permafrost areas

This is composed of mineral matter, water, air, and organic matter

Soil profiles are divided into different zones or layers called this

This is used to determine the percentages of sand, silt and clay in a soil

This includes all soil horizons above the C-horizon

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