Geology

Good Essays
ESS 101 Midterm Review
1. You should be familiar with the formation of the Earth and Solar System. What evidence is used to support the contention that the solar system formed from a rotating nebular dust cloud?

2. How does the earth become compositionally zone?

You should have knowledge of the 6 evolutionary stages that show how the earth could evolve from a "homogeneous mixture of primordial dust (planetesimals) to the compositionally zoned planet containing an Fe-Ni core, Fe-Mg silicate mantle and Fe-Mg-Al Crust. Compositional zonation based on density.

3. Physical properties of aesthnosphere and lithosphere.

You should have knowledge of the composition and physical properties of the lithosphere and asthenosphere. Asthenosphere-lithosphere relationship is important to understanding plate tectionics.

4. Evidence of compositional characteristics of the internal structure of the earth.

-meteorites are inferred to be composed of same material that earth was derived

-overall densisty of earth is 5.5 gm/cm3 density of crust 2.6-3.0 gm/cm3 provides some information regarding the density of the interior zones.

-earth has a magnetic field supports the argument for the core being metallic and the outer core being liquid (i.e., convecting electrons surrounding metallic solid inner core will generate magnetic field).

-seismic properties (velocities, absorption of S-waves by outer core).

-Why do P-wave and S-wave shadow zones form? Why is the S-wave shadow zone larger?

5. What is Isostasy?

-think about lower density continental versus denser ocean crust “floating” on the asthenosphere. Why do the continents possess high topography relative to the ocean basins?

6. Melting temperature versus geothermal gradient.

-Why is the outer core liquid and inner core solid when the outer core’s actual temperature is lower than the inner core’s? Melting temp dependent upon composition and pressure. Actual temperature (geothermal gradient)

You May Also Find These Documents Helpful

  • Good Essays

    Geology

    • 1091 Words
    • 5 Pages

    2002 Geology 211, Physical Geology Geology 211, Physical Geology ©Copyright, 2002, Ron Parker ©Copyright, 2002, Ron Parker ! Occurring today ! That occurred in the past Geology 211, Physical Geology, ©, 2002, Ron Parker Types of Sedimentary Rock + Sediment originates from mechanical and/or chemical weathering. + Two major divisions of sedimentary rock. ! Detrital – Made of particles. ! Chemical – Made from dissolved ions that crystallize into solids. Geology 211, Physical Geology, ©, 2002…

    • 1091 Words
    • 5 Pages
    Good Essays
  • Powerful Essays

    Geology

    • 3698 Words
    • 20 Pages

    Chapter 1: An Introduction to Geology What is geology, and what is the difference between physical and historical geology? Geology is the scientific study of the Earth and its major systems Physical Geology is the Study of the Earth's composition. structure, and the processing that shape it Historical Geology is the Study of Earth's history and the history of life With respect to why we study geology, in class I cited three areas of benefit to humanity where geologic knowledge is needed. What…

    • 3698 Words
    • 20 Pages
    Powerful Essays
  • Better Essays

    Geology

    • 5013 Words
    • 19 Pages

    Geology a science that examines the earth, its form and composition, and the changes it has undergone and is undergoing involves the knowledge of what happened before and the events occurring within the atmosphere requires not only a study of the materials found on earth but an understanding of the various geologic processes aims to develop an understanding of the earth’s materials and how these materials were changed and modified through the action of natural forces over a period of time Geology…

    • 5013 Words
    • 19 Pages
    Better Essays
  • Good Essays

    Geology

    • 1858 Words
    • 8 Pages

    FEDERAL CAPITAL ABUJA PHYSICAL SETTING PEOPLE, POPULATION AND SETTLEMENT SOCIAL INFRASTRUCTURE PROSPECT FOR THE FUTURE NATURAL RESOURCES AND DEVELOPMENT PHYSICAL SETTING Geology: The FCT is almost predominantly underlain by high grade metamorphic and igneous rocks of precambrian age. | National Assembly Complex | Generally trending NNESSW, these rocks consist of gneiss, migmatites and granites. A schist belt outcrops along the eastern margin of the area. The belt broadens southwards…

    • 1858 Words
    • 8 Pages
    Good Essays
  • Good Essays

    Geology

    • 322 Words
    • 2 Pages

    Devil’s Tower is a national monument that is surrounded by grassland like a rock protector. It was named our first national monument by President Theodore Roosevelt in 1906. This landscape is surrounded by sedimentary rocks, which are rocks that are formed from by the deposition of materials at the Earth’s surface. The rock layer that is visible in the Devil’s Towner is called the Spearfish Formation. It is a reddish color because of the dark red sandstone and the maroon siltstone. The oxidation…

    • 322 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Geology

    • 744 Words
    • 3 Pages

    How has society responded to coastal changes initiated by sand transportation, and have these responses been wise environmentally and economically? What do you do when mid-latitude cyclones get larger, strong frontal winds are more frequent, and waves and currents get stronger? How can we control high waves and storm surges that drive more sediment transport, permanently changing the coast? Coastal dunes, of all shapes and sizes, are are dense enough to prevent rapid and significant changes…

    • 744 Words
    • 3 Pages
    Good Essays
  • Good Essays

    geology

    • 817 Words
    • 8 Pages

    Telling Geologic Time Putting it in perspective Determining geological ages • Relative age dates – placing rocks and events in their proper sequence of formation • Numerical dates – specifying the actual number of years that have passed since an event occurred (known as absolute age dating) Figure 1-15 (p. 16) Geologic Time Scale. Uniformitarianism The physical, biological and chemical principles acting on the Earth in the present also acted on the Earth in the past…

    • 817 Words
    • 8 Pages
    Good Essays
  • Powerful Essays

    Geology

    • 1898 Words
    • 8 Pages

    Geography 1303 – World Geography Syllabus Blinn College – Bryan Campus Section: 406 CRN 11804 Meets: TR 1:25 – 2:40 Rm H226 Instructor's Name: Dr. Serena Aldrich Office Number: A214 Office Hours: M–F 8:30–10:00; MW 1:30–2:30; TR 12:00–1:00 Office Phone: 979-209-7577 Office Email: serena.aldrich@blinn.edu COURSE DESCRIPTION: Study of major world regions with emphasis on prevailing conditions and developments, including emerging conditions and trends, and the…

    • 1898 Words
    • 8 Pages
    Powerful Essays
  • Good Essays

    Geology Questions

    • 2397 Words
    • 10 Pages

    1.)A mastodon was found in Lafayette after being in the ground for how long? A.)30-35 million B.)30-35 billion C.)100 thousand D.)13.7 billion 2.)What is placing geological events in a sequential order as determined from their position in the geological record? A.)geologic time B.)Relative dating C.)Radiocarbon D.)tree-ring dating 3.)Which of the following methods can be used to demonstrate age equivalency of rock units? A.)Lateral tracing B.)Radiometric Dating C.)Guide fossils…

    • 2397 Words
    • 10 Pages
    Good Essays
  • Good Essays

    Geology and Housing

    • 601 Words
    • 3 Pages

    EXECUTIVE SUMMARY South Africa’s history demonstrates how the process of urbanization and industrialisation are politically fueled. The result of which may not actually improve the livelihoods of rural people migrating to the cities. People arriving in the city organize themselves to push for improved living and working situations. This is done through access to the urban labour markets and the struggle for well located land on which to settle. With constitutional rights for the poor, they have…

    • 601 Words
    • 3 Pages
    Good Essays