Weathering and Soil Scavenger Hunt 1 How does

Weathering and Soil Scavenger Hunt 1. How does Ice cause Mechanical Weathering? P. 30 2. What is abrasion? Name 3 ways abrasion can occur. P. 31 3. How can plants cause Mechanical Weathering? P. 32 4. True/False Rain and Snow naturally have small amounts of acid in them? P. 33 5. Rusting is a form of chemical weathering- what element is usually involved in rust, and what chemical reaction causes it? P. 35 6. What is Soil (as defined by scientists)? P. 39 7. Where does Soil come from? I. E. how is soil made? P. 39 8. What is Humus and why is it important for soil? P. 39 9. What are three Horizons of Soil? P. 40 – A. What kind of soil is in each horizon- name + description – B. What is beneath the three horizons? 10. Now that you know what Soil is, and where it comes from- how do weathering and soil relate to each other?

Answers • • When water freezes it expands, water gets into rock cracks freezes and expands making the rocks break open into pieces Abrasion is the action of rocks and sediment grinding against each other – River flowing bumpbing rocks – Wind blowing sand across rocks – Rock slide- rocks falling on each other • • Plants can cause weathering by sending their strong roots into rock cracks and growing and breaking them True Iron/ Oxidation Soil is fragments Soil comes from its parent bedrock- it comes from rocks that are weathered into soil The organix part of soil- it contians all the nutrients A top soil B sub soil C Bedrock