LEARNING GOALS;
I can identify and describe the 4 components of soil.
I understand that soil is a component of the overburden and that it sits on top of bedrock.
I can identify a mature versus an immature soil based on soil horizon development.
I can identify the locations and characteristics of Canada's 4 main soil regions.
Lesson.
Read the story "There's a Hair in my Dirt"
Teach Soil Processes
- Leaching
-Calcification
Ask students to Produce an Arcview Layout - Soil Map of Canada (Provide Instructions)
Home work:
Assign Chapter 13 outline Questions
Questions: 1,2,3,5,6,7,14,15,22,23,24,25,28,29,30,35,36,37,38,40
NOTES:
Leaching - The downward movement of water soluble minerals through a soil profile in wet climate areas. Rain water dissolves water soluble minerals in the soil. As the water percolates downward, the minerals are carried with the water deep into the soil profile. The topsoil in areas of excessive leaching is often infertile.
Calcification - The upward movement of water soluble minerals in soil, caused by excessive evaporation dry climate areas. As water evaporates from soil, minerals are carried to and deposited on the surface. If the mineral concentrations at the surface become too high, the soil can become toxic for some plant.
Permafrost. Soils found at high elevations and latitudes where temperatures are cold. The water component of soil is frozen all year long. The top 5 to 10 cm. may thaw in summer months but the ice at lower levels does not allow surface water to percolate into the ground. In summer months these areas may be quite muddy. The top soil are that does melt in the summer is called the Active Layer.
