20 terms

Room 27 Mogadore Soil

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Terms in this set (...)

bedrock
solid rock under the soil
conserve
to save by using carefully
erosion
processes by which rock, sand, and soil are broken down and carried away (i.e. weathering, glaciation)
horizons
different layers of soil
humus
part of soil that comes from dead plants and animals
permeability
the ability of soil to allow water to flow through it
porosity
having minute spaces or holes through which liquid or air may pass
soil
a combination of bits of rock, air, water and humus that sustains plant growth
weathering
changes that wear rocks or break rocks apart
organic
carbon-containing
decay
to break down dead plant or animal material
topsoil
top layer of soil that contains lots of humus
subsoil
the layer of soil below the top layer of soil
mechanical/physical weathering
the breakdown of rock into smaller pieces by physical means
chemical weathering
The process that breaks down rock through chemical changes
property
character, characteristic, quality, feature
sand
a part of soil that has large grains made of finely divided rock and mineral particles
silt
a particle of soil that has a medium size in between sand and clay
clay
very fine-grained pieces of soil that clump together when wet
loam
a rich soil consisting of a mixture of sand, clay and humus, good for farming