vocabulary 1
first layer of soil, where plants grow
topsoil
how something feels
texture
wind, rain, snow, and temperature changes that break down rocks
weathering
the harmful materials added to soil
pollution
middle layer of soil
subsoil
sand
the movement of sediment away after weathering
erosion
protecting our resources
conservation
bottom layer of soil that is made up of solid rock
bedrock
this type of soil has the smallest sediment pieces
clay
the living things that break down the dead material in the soil
decomposers
resources that CANNOT replaced quickly
nonrenewable resources
best type of soil
loam
made up of water, air, humus, and rocks
soil
when sediment is dropped in a new place
deposition
resources that can be replaced quickly
how easily water can pass through materials
permeability
the pieces of soil left from weathering
sediment
what soil is mostly made up of
rocks
sediment pieces in the soil that are smaller than sand but larger than clay
silt