Free

Geomorphology - Lab Report Example

Comments (0) Cite this document
Summary
The angles values were then entered in column E2:E18, 0-1.57, in increments of tenths, e.g., 0, 0.1, 0.2,… In the last column, (E18), the value 1.57 was entered instead of 1.6. These angle values were expressed in radian units.
Constitutive equation - a relation between…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER93.4% of users find it useful
Geomorphology Lab
Read TextPreview

Extract of sample "Geomorphology"

Information: Semester: Due GSC336, Lab Report: Driving and Resisting Forces Lab Objective: To gain a deeper understanding of Driving and Resisting Forces, by building a simple model and applying the knowledge acquired in class.
Lab Specific Goals:
a. To learn and apply geomorphology’s unifying concept, driving and resisting forces.
b. To review the various trigonometric functions and constitutive equations
c. To learn how to build equations, simple models and graphical plots in Microsoft Excel.
Lab Requirements:
a. Computer,
b. Microsoft Excel,
c. Hand-held or online calculator,
d. Printer.
Procure
1. The Lab 1 Microsoft Excel worksheet was downloaded from the “Module 1” in Canvas.
2. The was opened in worksheet in Microsoft Excel.
3. The matrix elements B2, B3, B4, were filled with the corresponding density (ρ), gravitational acceleration (g) and thickness (z).
The following constants were using in during the Lab:
ρ = 1,000 kg m-3
g = 9.8 m s-2
z = 1 m
4. The angles values were then entered in column E2:E18, 0-1.57, in increments of tenths, e.g., 0, 0.1, 0.2,… In the last column, (E18), the value 1.57 was entered instead of 1.6. These angle values were expressed in radian units.
5. In columns F2:F18, the angles in radians were converted to degrees. A formula was developed in each cell of the Microsoft Excel to do the conversion.
6. Shear Stress was then calculated. In Column G, a constitutive equation that calculates the corresponding shear stress for each angle (degrees) listed in the worksheet was built. Learn
7. Normal Stress was also calculated. In Column H, a constitutive equation that calculates the corresponding normal stress for each angle (degrees) listed in the worksheet was developed. .
8. A scatterplot in was created in Excel. The y, or response axis, is stress (kPa). The x, or Slope angle (deg) and (2) Normal Stress vs. Slope angle (deg). The axes were properly labeled.
9. The matrix and scatter plot were saved as a pdf, and then printed out.
Results and Discussion
The Data Matrix obtained is as shown below:
Slope angle (radians)
Slope angle (Degrees)
Shear stress (acts to impel material downslope)
Normal stress (acts to hold material in place)
F=M sinθ
F=M cos θ
0
0
0
5092.958179
0
1000
0.1
5.729577951
127.111854
5067.514602
99.83342
995.00417
0.2
11.4591559
1011.814593
4991.438094
198.6693
980.06658
0.3
17.18873385
1505.072054
4865.488786
295.5202
955.33649
0.4
22.91831181
1983.291331
4690.925123
389.4183
921.06099
0.5
28.64788976
2441.694218
4469.491286
479.4255
877.58256
0.6
34.37746771
2875.700503
4203.39977
564.6425
825.33561
0.7
40.10704566
3280.973739
3895.309273
644.2177
764.84219
0.8
45.83662361
3653.46457
3548.298134
717.3561
696.70671
0.9
51.56620156
3989.451191
3165.833572
783.3269
621.60997
1
57.29577951
4285.576534
2751.737048
841.471
540.30231
1.1
63.02535746
4538.881814
2310.146077
891.2074
453.59612
1.2
68.75493542
4746.836086
1845.472889
932.0391
362.35775
1.3
74.48451337
4907.361541
1362.360347
963.5582
267.49883
1.4
80.21409132
5018.854262
865.6355506
985.4497
169.96714
1.5
85.94366927
5080.20025
360.2616098
997.495
70.737202
1.57
89.95437384
5092.956564
4.055658635
999.9997
0.7963267
Shear Stress, T=F/A
Normal Stress, N=F/A
F=M sinθ
F=M cos θ
whereby M=1000
whereby M=1000
Area (A)=PI() *(B4/2)^2
Area (A)=PI() *(B4/2)^2
T=M sinθ/PI() *(B4/2)^2
T=M sinθ/PI() *(B4/2)^2

Scatter Plot
Helpful definitions:
Matrix - a rectangular array of numbers, symbols, or expressions, arranged in rows and columns. The individual items in a matrix are called its elements or entries.
Radian - standard unit of angular measure, used in many areas of mathematics.
Constitutive equation - a relation between two physical quantities (especially kinetic quantities as related to kinematic quantities) that is specific to a material or substance, and approximates the response of that material to external stimuli, usually as applied fields or forces.
Questions
1. Is shearing force a Driving or Resisting Force? Is normal force a Driving or Resisting force? Which is which? In your own words, justify your answers. (5 pts)
2. In your own words, explain Normal and Resisting Forces using a Boulder on a hillslope as an example. Hint: see you textbook, Chapter 1, for help. (5 pts)
3. Based on your scatter plot and knowledge acquired from your textbook, what is the critical angle, in degrees, that determines if the boulder would move, or not? Why did you choose this angle? (5 pts)
4. A local business informs you they have a 1 m-thick rock slab with a density of 1000 kg m-3 lying in their backyard that slopes at 25 degrees. Given normal weather conditions and unsaturated soils, will this rock slide and potentially destroy their business? Justify your answer in terms of angle, Driving and Resisting forces. (5 pts)
Answer to the Questions
1. Is shearing force a Driving or Resisting Force? Is normal force a Driving or Resisting force? Which is which? In your own words, justify your answers. (5 pts)
Shear force is a driving force because its effect is felt parallel to the slope. Normal force is a resisting force because it effects acts perpendicular to the slope (Lemke).
2. In your own words, explain Normal and Resisting Forces using a Boulder on a hillslope as an example. Hint: see you textbook, Chapter 1, for help. (5 pts)
Normal forces or resting forces on a boulder cliff tends to restrict the movement of an object. The angle of the slope is a contributing factor to the movement of a boulder along a hill slope. Additionally, the stability of the slope also affects the movement of an object. In this case, factors such as friction and cohesion determine how fast an object moves (Lemke).
2. Based on your scatter plot and knowledge acquired from your textbook, what is the critical angle, in degrees, that determines if the boulder would move, or not? Why did you choose this angle? (5 pts)
The critical angle for determining whether the boulder would move, or not is 45.840 degrees. At this point, the boulder would assume a stationery motion. The value is arrived by observing the point of intersection between the curves of shear and normal stress.
4. A local business informs you they have a 1 m-thick rock slab with a density of 1000 kg m-3 lying in their backyard that slopes at 25 degrees. Given normal weather conditions and unsaturated soils, will this rock slide and potentially destroy their business? Justify your answer in terms of angle, Driving and Resisting forces. (5 pts)
At 25 degrees, the sheer force on the rock will be 984.807753 while the normal stress will be 173.6481777 (in the opposite direction). This means that the forces propelling the rock slab downwards are greater than the resisting forces. Assuming that the weather conditions remain at normal levels it is highly likely that the rock in question will inflict a considerable damage to the surrounding property.
Conclusion
The experiment is of great essence. This is because it gives the relationship between the weights of an object, the forces acting on it, the angle of inclination and the acceleration due to gravity. This concept can be, for instance, used by geomorphologists to establish the effects and extent of flooding on flood plains. Also the concept is applicable in monitoring the changes in river position and patterns, among other geomorphological applications. Work Cited
Lemke, Karen A. “Slope Stability & Mass Wasting.” University of Wisconsin-Stevens Point, December 1, 2013. Web. January 26, 2015 < http://www4.uwsp.edu/geo/faculty/ lemke/geomorphology/lectures/10_mass_wasting.html>Read More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Geomorphology Lab Report Example | Topics and Well Written Essays - 500 words”, n.d.)
Geomorphology Lab Report Example | Topics and Well Written Essays - 500 words. Retrieved from https://studentshare.org/geography/1675170-geomorphology-lab
(Geomorphology Lab Report Example | Topics and Well Written Essays - 500 Words)
Geomorphology Lab Report Example | Topics and Well Written Essays - 500 Words. https://studentshare.org/geography/1675170-geomorphology-lab.
“Geomorphology Lab Report Example | Topics and Well Written Essays - 500 Words”, n.d. https://studentshare.org/geography/1675170-geomorphology-lab.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document

CHECK THESE SAMPLES OF Geomorphology Lab

Fluvial Geomorphology

...13 Mar. 2008 FLUVIAL GEOMORPHOLOGY INTRODUCTION Geomorphology is the study of landforms and the processes that shape them. Fluvial Geomorphology is the study of role of rivers in forming the morphology of the earth. In short it is the study of landform evolution related to rivers. Rivers are significant geo morphological agents, they show an amazing diversity of form and behavior and transfer water and sediment from the land surface to the oceans. Highly dynamic in nature, river channels adjust and evolve over timescales that range from hours to tens of thousands of years or more and are found in a wide range of environments. An understanding of fluvial geomorphology has...
8 Pages(2000 words)Essay

Chapter 1- What is Geomorphology

...Geomorphology al Affiliation Geomorphology The term geomorphology refers to the landforms’ study together with the processes shaping such landforms. The word geomorphology comes from three Greek words namely geo, morph and ology meaning the earth, form and discourse respectively. Therefore, geomorphology is the earth’s forms discourse/ study (Huggett, 2011). In the past, it was defined as forms of topography genetic study and used to explain the earth’s surface morphology. Presently, it refers to the study of the physical land-surface features of the earth such as plains, rivers and hills. However, some scholars incorporate landforms of submarine while others include solar system’s satellites and planets landforms (Huggett, 2011... ). The...
4 Pages(1000 words)Essay

Geomorphology

...Geomorphology Geomology is defined as a scientific landform study and all the processes that are responsible in shaping the landscape. The Geomorphologists try to gather knowledge on the manner in which the landscapes look the manner they do. They do this to be able to understand the historical background and dynamics of the land hence predict the changes by a combination of the physical experiments, field observation, and numerical modeling. The earth surface is always modified through combining the processes of the surface that may sculpt the geology and landscape processes that result into subsidence, tectonic and uplift. This paper explores the process of geomorphology. Background Research The...
6 Pages(1500 words)Lab Report

Geomorphology

...Extra Credit Extra Credit Website Florida Department of Children and Families: Domestic Violence
 The primary mission of the program is to make sure that the domestic violence victims are safe through establishing the partnerships with organizational communities to establish a seamless service system. The department gives the victims the support service or the crisis services free of charge and on a twenty-four hour basis. The services offered include 24-hour information and crisis hotline, emergency shelter, referrals and information, community awareness education, and the law enforcement training for the profession. This is important for the health care workers because it provides them with the programs and procedures... Credit Extra...
6 Pages(1500 words)Lab Report

Lab

...Discussion In the test for the engine parameters, it was found out that the temperature changes for ambient temperature, and fuel in the engine increased with time. On the other hand, the temperatures for oil output, the exhaust, cooler in the engine, the cooler output and the oil input decrease with time. The results recorded were used to calculate for the derived values such that torque was obtained as 72.7 N/M and ranges between 72.1 N/M - 72.7 N/M, the brake power was obtained to be in the range 40987.46667 KW - 8370.193333 KW, the brake thermal efficiency was calculated to be 32% and ranges between 23.4 % - 32.4 %. Finally the volumetric efficiency was found to be 60%. It is important to point out that the torque... In the test for the...
2 Pages(500 words)Lab Report

Geomorphology

... Face-to-face time questions for led discussion Chapter Earth’s Dynamic Surface   Work on the following questions with your classmates, in and out of class.  You are required to lead classroom discussion using the following questions.  Dr. Stinchcomb will serve as your guide and mentor as you teach your classmates.   1. What are the two key components of the geosphere that create large-scale topography on Earth’s surface? Asthenosphere and lithosphere 2. Can you define Isostasy?  Explain to your classmates the process of Isostasy using an iceberg and then relate it to mountain building.  Isostacy refers to the equilibrium that exists between parts of the earths crust, which behaves as if it consists of blocks floating... Face-to-face time...
2 Pages(500 words)Coursework

Geomorphology Lab

...GSC336, LAB DRIVING AND RESISTING FORCES Semester: Objective: Gain a deeper understanding of Driving and Resisting Forces by building asimple model and applying your knowledge, Data Matrix Slope angle (radians) Slope angle (Degrees) Shear stress (acts to impel material downslope) Normal stress (acts to hold material in place) 0 0 0 9800 0.1 5.729577951 978.3674831 9751.04082 0.2 11.4591559 1946.959442 9604.652463 0.3 17.18873385 2896.098025 9362.297593 0.4 22.91831181 3816.299755 9026.397741 0.5 28.64788976 4698.370278 8600.309107 0.6 34.37746771 5533.496239 8088.289026 0.7 40.10704566 6313.333335 7495.453435 0.8 45.83662361 7030.089691 6827.725752 0.9 51.56620156 7676.603714 6091.777689 1 57.29577951 8246.415651 5294.962598 1.1... by...
2 Pages(500 words)Lab Report

Geomorphology Lab 2

...Introduction The onset of radio-carbon dating has made it possible to precisely determine the age of an organism which formerly lived. Through taking the ratio of carbon-12 to carbon-14 in a particular sample and then benchmarking it to the living organism’s ratio, an individual is able to determine the age. In which case, another important aspect applied is half-life, which is the time taken by half of the sample to decay and is denoted by t1/2. Objective This lab was designed specifically, with a major objective of developing a more comprehensive and hands-on understanding of radiocarbon dating. From this, the specific goals are as follows: Understand half-life and radio-carbon dating Know the difference between...
2 Pages(500 words)Lab Report

Geomorphology Lab 3

...Introduction The degree of tombstone weathering is figured to rely on various factors given that the some tombstone stayslonger than others do. One of the major the factor that can be measured effectively is the age of the gravestone. Through calibrated relative dating, that involves dating them relative to each other, the age of the tombstones can be arrived at. Other factors that affect weathering degree of a tombstone include type of rock, height, length and thickness. Through exploring these factors, the knowledge about the degree of weathering on tombstones is established. Further, a model for predicting age can be succinctly tested based on weathering degree. As the result of the above concepts, this lab was...
2 Pages(500 words)Lab Report

Geomorphology Lab 5

...Introduction Variability in stream chemistry is core phenomenal when studying geomorphology in rivers. In which case, this forms characteristics that define a drainage basin within a given point. Intuitively, various factors dictates the dissolved ion content in a stream , including geology and soil in the watershed, discharge ratio of runoff and baseflow contribution, pollutants, in-stream organic matter decomposition, soil erosion, fertilizer runoff (Rajvaidya 45). Stream chemistry involves Ph and EC. PH (-log H+) is measure of the acidity or basicity of an aqueous solution while EC measures the degree to which a solution carries an electric current, calculated as the ratio of the current density in the material to...
2 Pages(500 words)Lab Report
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Lab Report on topic Geomorphology Lab for FREE!

Contact Us