1. October 11, 2011

2. Objective: Agenda Identify different soil types using a soil triangle
Collect Homework
Cemetery observation lab
Soil Notes
Soil Triangle activity
Read pages answer question 1-5 on page 356 ( if not completed in class must be done for Homework!)

3. Soils

4. What is soil? It is the accumulation of loose, weathered material
The material from which soil is formed is called parent material.

5. Two types of soil
Residual Soil - formed from parent material ( bedrock under the soil)
Transported Soil - soil that has been moved from one area to another by erosion.
Most soil on the Earth's surface is transported.

6. Climate and Soil More weathering = deeper soil
Farmers need a deep layer of organic material for their crops

7. Soil Profile Soil will form horizontal layers called soil horizons.
A- Horizon is called topsoil
B and C Horizon is subsoil

8. Soil Composition Rock material
in soil contains three parts: sand, silt, and clay.
Organic material- humus
Decaying plant and animal remains