Name ________________________________
Know the following key terms:
Abrasion
Ice wedging
Chemical weathering
Uniformitarianism
Decomposer
Permeable
Loam
Litter
Dust Bowl
Soil conservation
Contour plowing
Conservation plowing
Know the following information:
How oxygen weathers rock
Most important factors in the rate of weathering
Type of climate for quick weathering
Why mountains have rounded edges
Formation of humus
How living organisms help soil
How humus gets mixed with soil
Study Guide-Weathering and Soil Formation
Test _____________________
Beginning of soil formation
What each soil horizon is called
What makes up each of the 4 soil horizons
How George Washington Carver helped farmers
What causes loss of soil
Why soil is a valuable resource
Essay Questions will be about the following information:
Describe the composition of soil, and explain how it forms. (Know details about each soil
horizon.)
Identify what causes mechanical weathering and chemical weathering. (Know details about
each mechanical weathering force and each chemical weathering force.)