ES Notes-Int. of Earth-Earthquakes & Volcanoes

ES Notes-Int. of Earth-Earthquakes & Volcanoes -...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
General Earth Science A. Interior of the Earth 1. How do we know about it a. Earthquake waves 1. P-waves and S-waves 2. Gravity & Density calculations 3. Study of meteorites a. Iron meteorites b. Stony iron c. Stony meteorites 2. Mechanical layers of the Earth - divisions based on changes in physical  properties a. Lithosphere      - rocky outer layer, deforms brittly for the most part 1. Makes up the plates in plate tectonics 2. Approximately 100 Km thick b. Asthenosphere      - "weak" layer that flows 1. Mechanism of movement in plate tectonics 2. Flows on longer time scales 3. 100-700 Km depth c. Mesosphere      - middle layer 1. Solid, rocky setting 2. Increase in density with depth 3. 700-2900 Km in depth d. Outer core     1. Only true liquid 2. Produces Earth's magnetic field 3. 2900-5300 Km in depth e. Inner core     1. Solid 2. To the center of earth - 6371 Km 3. Layers based on compositional changes a. Crust - Outermost layer 1. Oceanic a. 3.2 grams per cubic cm. b. Basalt 2. Continental a. 2.8 grams per cubic cm. b. Diorite comp on average b. Mantle - Middle layer 1. Largest volume of Earth 2. Contains part or all of these mechanical layers a. Lower lithosphere
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
b. Asthenosphere c. Mesosphere 3. Rock - periditite (olivine rich) 3.5 -5 grams per kg 4. 40-2900 Km c. Core - at the center 1. Composition is predominantly metallic iron 2. Estimated: Sulfur & Nickel B. Earthquakes 1. Types of waves a. P-waves 1.
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern