Theory question 304
Weathering, Erosion and Mass Movement(a) Define the term weathering (b) Highlight three benefits of weathering to mankind. (c) Identify three factors which affect the rate of weathering.
Show the model answer
Model answer
(a) Weathering is the breakdown and decay of rocks in their original position by physical, chemical and biological processes.
(b) Forms soil for agriculture; produces sand, gravel and clay for building; concentrates minerals (e.g. bauxite, laterite); creates attractive landforms for tourism; releases plant nutrients.
(c) Climate (temperature and rainfall); rock type and mineral composition; rock structure (joints); relief and slope; vegetation and organisms; human activities; time.
Explanation
Short phrases are enough.