How Do Freezing, Thawing, Wetting, and Drying Contribute to Soil

question 41

Multiple Choice

How do freezing, thawing, wetting, and drying contribute to soil creep?

• A) The soil expands and contracts, lifting particles and dropping them a slight distance downslope.
• B) The soil becomes much weaker when dry and frozen.
• C) Eventually, these cause the soil and regolith to suddenly slide down the slope.
• D) Gravity exerts a much stronger force when the soil is wet and thawed.

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