Soil 🪱 Flashcards
What is soil
•Soil is the layer of loose material on the
earth’s surface.
Whats soil made from ( 5 main ingredients)
Air, humus, mineral water, water and living organisms
Name 6 ways soil can be formed
•Climate
•Parent Material
•Vegetation
•Living Organisms
•Landscape
•Time
What is soil profile
If you dig down into the ground you will reach
the bedrock. You will be able to see a number
of different layers of soil. Each layer is called
a horizon.
What are the three horizons
There are 3 horizons, called the A,B, and C
horizons. These 3 layers make up the soil
profile.
A horizon
This, the upper layer of soil, is called the
topsoil. It is dark in colour because it has
a high humus content. Most of the
organisms live in this horizon.