PSC 1515 Miami Dade College Chapter 19 Building Earths Surface Questions

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PSC 1515

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PSC1515-2686 (June 2020) Assignment 2 (to turn in by July 7th) Name: _____________________________________ Textbook: Physical Science, by Bill W. Tillery, 10th Edition. Answer the following questions at your best: Chapter 19 – Building Earth’s surface 1- What is the principle of uniformity? What are the underlying assumptions of this principle? 2- What does the presence of folded sedimentary rock layers mean about the geologic history of an area? 3- Describe the conditions that would lead to faulting as opposed to folding of rock layers. 4- How would plate tectonics explain the occurrence of normal faulting? 5- What is an earthquake? What produces an earthquake? 6- Where would the theory of plate tectonics predict that earthquakes would occur? 7- Describe how the location of an earthquake is identified by a seismic recording station. 8- Describe any possible relationship between volcanic activity and changes in weather. 9- What is the source of magma that forms volcanoes? Explain how the magma is generated. 10- What are mountains? Why do they tend to form in long, thin belts? Chapter 20: Shaping Earth’s surface 1- What other erosion processes are important as a stream of running water carves a valley in the mountains? Explain 2- Describe three ways in which a river erodes its channel. 3- What is a floodplain? 4- What is a glacier? How does a glacier erode the land? 5- What is rock flour and how is it produced? 6- Could a glacier erode the land lower than sea level? Explain. 7- What characteristics of a soil make it a good soil? 8- What essential condition must be met before mass wasting can occur? 9- Compare the materials deposited by streams, wind, and glaciers. 10- Why do certain stone buildings tend to weather more rapidly in cities than they do in rural areas?
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Running head: EARTH SCIENCES

1

Earth Sciences
Student’s Name
Institution

EARTH SCIENCES

2
Earth Sciences

PSC1515-2686 (June 2020)
Assignment 2 (to turn in by July 7th)
Name: _____________________________________
Textbook: Physical Science, by Bill W. Tillery, 10th Edition.
Answer the following questions at your best:
Chapter 19 – Building Earth’s surface
1. What is the principle of uniformity? What are the underlying assumptions of this
principle?
The principle of uniformity suggests that in the past, the earth’s geologic processes acted in
intensity similarly, to how they perform at present. Primarily, this principle suggests that this
uniformity accounts for all geological alterations and that the principle is significant to
geological thinking and triggers the development of geological science
2. What does the presence of folded sedimentary rock layers mean about the geologic
history of an area?
The presence of folded sedimentary rocks signifies that the rocks were in the past exposed to
compressive stress. Due to this, a plastic strain may have caused the layers of rock to form into
folds.
3. Describe the conditions that would lead to faulting as opposed to folding of rock layers.
Faults can occur in response to various forces that enclose compression, shear and tension.
The type of fault that occurs however depends on the kind of exerted force on the rock layers.

EARTH SCIENCES

4. How would plate tectonics explain the occurrence of normal faulting?
A fault occurs because of the brittleness of the earth’s response to stress. Primarily, the
tectonic plate movement offers the pressure resulting in the rocks at the earth’s surface to break.
Faults do not have a definite length scale (Tillery, 2002). They can range from few to thousands
of kilometers in length.
5. What is an earthquake? What produces an earthquake?
An earthquake is the trembling of the earth’s facade that may result from a sudden release of
energy within the earth’s lithosphere that produces seismic waves. A sudden slip on a fault causes
an earthquake.
When stresses on the edges of the fault o...


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