2.1 (Horizons)

Question 1

O Horizon

Answer 1

• Made up of Organic Material
• Found at soil surface
• where detritus is

Question 2

A Horizon

Answer 2

• Often called “topsoil”
• Made up of sand, silt, and clay particles
• COWA: Contains Organic material, Water, and Air
• Most Biologically Productive Layer

Question 3

E Horizon

Answer 3

• Eluvation Layer made up of mostly large sand particles
• Leaching of water and nutrients from A Horizon to B Horizon
• Poor nutrients

Question 4

B Horizon

Answer 4

• The “Subsoil”
• composed of Metals such as Iron and Aluminium that oxide
• reddish color

Question 5

C Horizon

Answer 5

The crumbled (weathered rock material) parent material.

Question 6

R Horizon

Answer 6

BEDROCK

The parents material (volcanic ash, salt, glaciers) from the horizons form.