1. Weathering and Erosion By: Lindsey Iames & Mikaela White

2. Types of Weathering
Chemical
Mechanical

3. Agents of Weathering Rainwater Oxygen Carbon dioxide Plant decay acids
These are all examples of chemical erosion. They are called agents

4. Soil Horizons
There are three horizons (A,B,C) in soils.

5. A Horizon
Topsoil
Dark
Organic material

6. B Horizon
Subsoil
contains clay
soluble minerals

7. C Horizon
slightly weathered parent material
rock fragments.

8. Major soil types There are two major soil types.
The two types are Pedocals and Pedalfers.

9. Agents of erosion Water-beaches and rivers Ice-glaciers
Gravity-landslides
Wind-sand dune

10. Question 1
Which horizon is made up of slightly weathered parent material and rock fragments.
A. C Horizon
B. A Horizon
C. B Horizon

11. Right
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12. Wrong
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13. Question 2 Which is NOT an agent of weathering? A. Rainwater B. Soil
C. Plant decay

14. Right
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15. Wrong
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16. List two types and four Agents of Weathering
Chemical
Mechanical
Four Agents
Rainwater
Oxygen
Carbon Dioxide
Plant Decay Acids

17. List and Describe each soil horizon, and how each develops.
A Horizon-Topsoil, Dark, Organic material
B Horizon-Subsoil, contains clay, soluble minerals
C Horizon-Slightly Weathered parent material, rock fragments

18. Water-Beaches and Rivers Ice-Glaciers Gravity-Landslides
List four agents of erosion, and describe the landforms associated with each
Water-Beaches and Rivers
Ice-Glaciers
Gravity-Landslides
Wind-Sand Dune

19. The End