The removal of rock, layer by layer due to weathering is called ________

The removal of rock, layer by layer due to weathering is called Exfoliation. Rocks are generally poor conductors of heat. The effect of daily heating and cooling is confined to surface layers of rocks. The outer layer of rock is heated up and expands during the day while the inner layer of rock remains cool. The outer layers eventually peel off (like an onion skin), exposing the inner layers to the surface for further exfoliation.