This involves such effects as: frost wedging, in which water trapped in a crack in a rock expands on freezing and splits the rock sand blasting, in which exposed rock faces are worn away by sand particles blown by the wind and soil creep, in which soil particles gradually move downhill under the influence of gravity.Ĭarbon dioxide in the atmosphere combines with rainwater to produce weak carbonic acid, which may then react with certain minerals in the rocks and break them down.
Two types of weathering are recognized: physical and chemical. Process by which exposed rocks are broken down by the action of rain, frost, wind, and other elements of the weather.
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