Download Soil

Soil
By,
Mrs. Schuette’s
Second Grade Class
2013
Topsoil
The top layer of soil.
Subsoil
The layer of soil below the topsoil.
A mixture of decaying plants
and animals in soil.
Gravel
A part of soil made up of large sized
pieces (smaller than rock).
Sand
A part of soil made up of medium
sized grains (smaller than gravel).
Silt
A part of soil made up of small sized
grains (smaller than sand).
Clay
A part of soil made up of
very small grains.
Loam
A mixture of clay, silt, and sand.
Compost
A mixture of decayed leaves,
vegetables, and
other plant materials.
Organism
A living thing.
Decomposers
Tiny organisms in the soil
that help break it down.
Decay
The process by which
dead material breaks down (rot).
Nutrients
Materials that plants and animals
need to live and grow.
Organic
Anything that does come
from living things.
Inorganic
Anything that does not come
from living things.
Erosion
The wearing away of rock or soil.
Weathering
The breaking down of rocks.
The End!