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.
Nobody downloaded yet

Erosion, weathering, mass wasting. Earth's Interior Geologic Time Scale - Assignment Example

Comments (0) Cite this document
Summary
Erosion occurs when wind or water blow/wash away the topmost fertile layer of soil. As fertile land loses its fertility due to soil erosion, it is difficult to grow crops on eroded lands. Apart from affecting crops, erosion also weakens land, causing buildings to collapse…
Download full paperFile format: .doc, available for editing
Polish This Essay91.5% of users find it useful
Erosion, weathering, mass wasting. Earths Interior Geologic Time Scale
Read TextPreview

Extract of sample
"Erosion, weathering, mass wasting. Earth's Interior Geologic Time Scale"

Download file to see previous pages Soil erosion can be prevented by planting windbreaks. Windbreaks are lines of planted bushes and plants that hold soil firmly with their roots and prevent it from being washed away. Other methods include terracing, in which level plains are cut on hillsides and crops are grown on these plains. (wikipedia.org).Weathering is the process of decomposition or breakdown of soils and rocks when they come in direct contact with natural forces such as wind, rain and heat. Weathering is of two types, mechanical and chemical. Mechanical weathering involves the breakdown of rocks due to wind, heat, rain and ice. Sand that is carried by wind grinds down the surfaces of rocks, causing wind erosion/weathering. Higher temperatures cause cracks in rocks. This mostly occurs when sun rays heat up the surface of the rocks while the inside of the rock remains cool. When the surface of such rocks cools down at night, it contracts. Repeated contraction and expansion causes cracks in the rock, leading to its breakdown and weathering. Raindrops too cause weathering, either by wearing down the rocks or by causing chemical changes by mixing with minerals in the rocks. Ice glaciers running over rocks also lead to their breakdown. Chemical weathering occurs when environmental agents, such as CO2, react with rock minerals. (wikipedia.org) Mass wasting is the process by which soil and rocks move down a slope due the action of gravity. This occurs when the gravitational forces acting on a soil layer on a slope exceeds the frictional force that is keeping the soil layer in place. The maximum angle of the slope at which the soil continues to stay in place without being pulled by gravity is called angle of repose. Mass wasting occurs when the slope’s angle exceeds the angle of repose. Landslides, mudflows and creeps are examples of mass wasting. It usually occurs due to change in slope angle, weathering of rocks, intensive increase or decrease in water content of the soil, and lack of vegetation to hold the soil together. (wikipedia.org) 2. Earth's lithosphere and plate tectonics The earth’s lithosphere is the solid outermost region of the earth, comprising of the crust and the upper mantle. Lithosphere is of two types, oceanic and continental. The oceanic lithosphere is the crust that exists beneath the oceans, and whose thickness is about 50-100 Km. Continental lithosphere is about 40-200 Km thick and is associated with the continental crust. The thickness of the oceanic lithosphere increases as it ages. Moreover, it always sinks beneath the continental lithosphere. The lithosphere is divided into plates called tectonic plates that are constantly in gradual motion. The theory of plate tectonics explains the large-scale motion of the earth’s tectonic plates. This theory builds up on other theories such as those of continental drift. The energy for motion of tectonic plates is derived from the dissipated heat from the earth’s mantle. While the mechanism underlying the motion of tectonic plate is still under debate, several reasonable explanations do exist. Apart from several minor plates, there are eight major tectonic plates – namely, Antarctic Plate, African Plate, Indian Plate, Australian Plate, Eurasian Plate, Pacific Plate, South American Plate, and the North American Plate. Below these plates, which comprise the lithosphere, the asthenosphere (hot, viscous fluid that is a part of the upper mantle) flows gradually. Convection currents generated in the asthenosphere transfer heat to the tectonic plates in the lithosphere, which are then separated by the action of magma. Movement of these tectonic plates gives rise to ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Erosion, weathering, mass wasting. Earth's Interior Geologic Time Assignment”, n.d.)
Erosion, weathering, mass wasting. Earth's Interior Geologic Time Assignment. Retrieved from https://studentshare.org/physics/1436155-erosion-weathering-mass-wasting-earths-interior-geologic-time-scale
(Erosion, Weathering, Mass Wasting. Earth'S Interior Geologic Time Assignment)
Erosion, Weathering, Mass Wasting. Earth'S Interior Geologic Time Assignment. https://studentshare.org/physics/1436155-erosion-weathering-mass-wasting-earths-interior-geologic-time-scale.
“Erosion, Weathering, Mass Wasting. Earth'S Interior Geologic Time Assignment”, n.d. https://studentshare.org/physics/1436155-erosion-weathering-mass-wasting-earths-interior-geologic-time-scale.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document
CHECK THESE SAMPLES - THEY ALSO FIT YOUR TOPIC
Mass Media
The paper will discuss the impacts of these sociological theories of mass media on the society in which I will discuss how does each sociological theory apply in the social institutions, what are the similarities and differences in the theories, how does each theory affects the individual who is the part of the institution, how does each theory affect the approach to social change with in the selected institution and with in the sociological institution selected, how does each theory affect the views of society.
6 Pages(1500 words)Assignment
Cliff erosion and saltmarsh
Coastlines are eroded over time by tidal activity. Furthermore, the waves incorporate forces from different factors and deliver their force directly to the coastline. Besides the physical impact, the process is reinforced by physical and chemical weathering.
4 Pages(1000 words)Assignment
Interior Design
However, since the invention of the television and the increasingly important and varied role of the electronic media, interior design, like many other fields, has exploded into myriad facets, some beautiful, and some a pale refraction of some -ism past, superficially perceived, poorly executed and barely understood.
2 Pages(500 words)Assignment
Glaciers,Deserts,Wind; Earth's Interior, Earthquakes, Volcanos and other activity
The formation of huge glaciers takes a very long time, which may be hundreds or thousands of years. There are two types of glaciers -1) Continental Glaciers spreads over large land masses, and 2) Alpine or Mountain
2 Pages(500 words)Assignment
Geologic History
The geological process of the grand canyon is estimated to have occurred about 75 million years back. This development was initiated by various processes ranging from sedimentary uplift or movements of
2 Pages(500 words)Assignment
Analysis of Paracetamol in Urine Using High Performance Liquid Chromatography Hyphenated to Ion-Trap Time of Flight Mass Spectrometer
Adults recommended dose is 4000mg or 1000mg/day6. The drug overdose may result to kidney, brain and liver damage2. Thus, it is critical to measure the drug levels in urine and blood. Several
4 Pages(1000 words)Assignment
Scale and Geologic Time Lab
I. First you need to determine your scale of comparison. This is the human scale you are going to use to compare with the geologic time scale. For this exercise
3 Pages(750 words)Assignment
Interior design - university case study
Leadership may also contribute towards improving the student learning by implementing initiative aimed towards improving the quality of schools. There are various techniques that are considered to be
2 Pages(500 words)Assignment
Cutting edge material - interior design
The fully customizable rugs are crafted from hand-tufted silk and wool, with changing pile heights and a mixture of cut-and-loop textures and cutting techniques that further articulate a sense of intensity
1 Pages(250 words)Assignment
Geologic Time, oceans
The river cut through the rock strata in the region, cutting through the rock strata over different geological time scales. The rock strata in the region vary in composition, which causes a difference in hardness. The soft rocks at the top are subjected to massive
4 Pages(1000 words)Assignment
Let us find you another Assignment on topic Erosion, weathering, mass wasting. Earth's Interior Geologic Time Scale for FREE!
Contact us:
+16312120006
Contact Us Now
FREE Mobile Apps:
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us