Vocab 23 words Flashcards
parent material
solid rocks that breaks into smaller pieces
weathering
Breaking down rock material
physical weathering
the disintegration of rock by temp, water, and wind
chemical weathering
changes the chemical makeup of rock and breaks it down
igneous rocks
created by the cooling and solidification of molten materials from deep in the earth
Sedimentary rock
when loose material like mud and sand are deposited by water, wind, or other agents
Metamorphic rock
forms when igneous or sedimentary rocks are subjected to great heat or pressure
pedology
the study of soil formation; called soil genesis
ecosystem
natural community for plants and animals
Mineral soils
made up of rocks and minerals of various sizes(silt, clay, and sand)
Organic soils
plant animal or microbes that could be new or fully decomposed. Stores and supplies nutrients
tepography
soils position in the landscape influences soil
soil horizons
layers of soil
soil profile
arrangement of the soil horizons
top soil
A horizon
subsoil
B horizon
o horizon
organic material, top layer decomposed plants animals and microbes
A horizon
rich in nutrients most roots found here, dark in color
E horizon
light color, zone of maximum leaching
b horizon
subsoil, zone of maximum leaching, red or yellow color
c horizon
parent material, broken down rock
R horizon
bedrock, can be any of the three rock types, I S or M
leaching
drain away a chemical from soil, usually rain
