Earth's Dynamic Surface
Weathering and Soils Computer Lab Exercise

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  1. Comparing basalts from New Mexico and Maryland, why do they look different?

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  2. What influences how rocks weather?

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  3. Why did El Morro engravings last so long?

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  4. What tombstones preserve inscriptions the worst over time?

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  5. What would be the best tombstone rock type?

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  6. What is physical weathering?

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  7. What is chemical weathering?

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Frost Wedging
  1. What happens in parallel cracks in rock when water gets in?

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Exfoliation
  1. What is exfoliation?

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  2. How does it happen?

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Dissolution
  1. What is dissolution?

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  2. What is the name of the most common rock that easily dissolves?

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  3. What is the chemical formula for carbonic acid?

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  4. Define an acid.

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  5. How do we measure acid levels?

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Oxidation
  1. What are the easiest rocks to oxidize?

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Hydrolysis
  1. What is hydrolysis?

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  2. Name the most common type of rock that undergoes hydrolysis.

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  3. What do the feldspars weather to?

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Plants & Animals
  1. What is bioturbation?

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  2. Define a chelator.

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  3. What do chelators move through the soil?

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Soils
  1. What are the 4 main soil horizons and describe them. (4pts)

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  2. Describe the O and E horizons. (2pts)

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