Download QR-4- Weathering, Soil and Mass Wasting Answer each of the

QR-4- Weathering, Soil and Mass Wasting
Answer each of the following questions and staple all separate pieces of paper as one complete
packet.
1. Preview the chapter by locating 5 diagrams that catch your interest. Indicate which
diagram you have located, and write a “paraphrased” statement describing each diagram.
Answer the following chapter questions.
1. List examples of the Earth’s external and internal processes.
2. Briefly describe the differences between mechanical and chemical weathering.
3. From your prior experiences, provide one example mechanical weathering and one
example of chemical weathering.
4. When a rock is mechanically weathered, how does its surface area change? How does this
influence the progression of chemical weathering?
5. Provide an example where water creates mechanical weathering.
6. Briefly describe the following:
a. The formation of an exfoliation dome
b. Frost wedging
c. The contribution of biological activity to promote mechanical weathering.\
7. Describe the formation of carbonic acid and how it promotes chemical weathering.
8. What chemical products are produced when carbonic acid reacts with potassium feldspar
(the mineral orthoclase).
9. What is acid rain, and what effects does acid rain have on the Earth’s surface?
10. How does climate influence both mechanical and chemical weathering processes?
11. How is regolith different than soil?
12. Draw a illustration showing the soil texture ternary (triangle) diagram and answer the
following:
a. How is the diagram used to represent various types of soil textures?
b. Why is the understanding of soil textures important?
c. Name the soil that consists of 60% sand, 30% silt, and 10% clay
13. Sketch and label the main soil horizons in a well-developed soil profile.
14. How have human activities affected the rate of soil erosion?
15. What are two detrimental effects of soil erosion aside from the loss of top soil?
16. Briefly describe the formation of the mineral bauxite and its importance.
Mass Wasting
1. Define mass wasting and the primary force responsible for mass wasting processes.
2. Identify at least three “triggers” that initiate mass wasting processes.
3. Describe the significance of the angle of repose.
4. How are mass wasting processes classified?
5. Describe the following mass wasting processes:
a. Slump
b. Rockslide
c. Debris flow
d. Lahars
e. Earthflow
f. Creep (soil creep)
g. Solifluction
h. Rock avalanche
6. Why can rock avalanches move at such great speeds?
7. Contrast earthflow with debris flow.