The End Result of Weathering Soils Topic 9 Regents Earth Science
Soils are the end result of both chemical and physical weathering.
sediments all particles of weathered rock regardless of their size
ESRT page 6 The dotted lines separate the sizes from each each other
Sediment Sizes - not kind of material Boulders Cobbles Pebbles Sand Silt Clay Colloids Atoms and ions large small > 25.6 cm
soil Tiny bits of inorganic (rock) and organic (humus) matter ranging in size from sand to colloids and ions
humus organic part of the soil partially weathered plant and animal matter
Soil profile A side view of a vertical section showing all horizontal layers Develops as a result of weathering and biological processes
Soil Profile
Soil profile
Soil horizons The different layers in a soil profile each with its own characteristic properties such as color, texture, and mineral composition
Parent material the material from which a soil is formed
Residual soil soil that has the local bedrock as its parent material
Transported soil soil that formed from parent material left by winds, glaciers, and rivers, or soil that was itself moved from its original location
Factors that affect the thickness and composition climate - temperature and precipitation Time longer = thicker parent material -affects the rate of soil formation the soils’s fertility Types of organisms and how many there are Slope of the land