Topography affects the rate of weathering because if you have rough steep slopes, there is more area expose to rain, wind… Therefore, because of what we have learned from surface area, we know that steeper slopes with weather faster than a flat area.

How does it affect weathering?

Rainfall and temperature can affect the rate in which rocks weather. High temperatures and greater rainfall increase the rate of chemical weathering. ... Minerals in a rock buried in soil will therefore break down more rapidly than minerals in a rock that is exposed to air.

Does topography affect the rate of erosion?

The topographical factor. Although slope has a powerful influence on erosion, the presence of erosion and heavy runoff on gentle slopes (2% in the Sahel or on European uplands) indicates that this phenomenon can occur without any need for a steep slope: the action of rain is enough (Fauck 1956, Fournier 1967).