Week 9: Earthquakes and Volcanoes

 



  1. What did you do in lab today?

    1. Composite - can often explode out of their sides

    2. Cinder cone - often explodes out of the top; the most well-known example of a volcano 

    3. Shield - slow flow with huge, sloping sides 

  2. What was the big question?

    1. How are earthquakes and volcanoes related to plate tectonics? 

  3. What did you learn in Thursday’s discussion?

    1. Most earthquakes and volcanoes occur on coastlines and fault lines 

      1. Fault lines: locations where tectonic plates are broken 

  4. Read chapter 9 of the textbook. 

    1. What did you learn?

      1. I learned that volcanoes are found on every continent, and even on other planets and the moon. 

      2. There are also two different kinds of volcanic eruption: explosive and effusive. Explosive eruptions are when magma is fiercely magmented and rapidly expelled from the volcano. Effusive eruptions are when lava flows steadily out of a volcano and onto the ground. 

      3. Forming of volcanoes 

        1. Convergent plates

          1. The oceanic plate converges with a continental plate 

          2. The oceanic plate subducts under the continental plate, forming a subduction zone 

        2. Divergent plates

          1. When two plates diverge, magma rises up to fill the space in between, and an underwater volcano forms 

        3. Hot spots 

          1. An extremely hot area in the mantle where magma can rise up to the surface and create volcanic activity 

      4. As tectonic plates continue to push into or slide past each other causes intense stress to build up. The rocks will eventually snap, and the pressure will be released in the form of powerful seismic waves. 

    2. What was the most helpful?

      1. I found it very helpful that the chapter went over how volcanoes are formed and restated the different kinds of volcanoes. I had never learned how volcanoes were created, so that was really interesting. 

    3. What do you need more information on?

      1. I do not need any more information on any of the topics covered in the chapter. 

  5. What questions, concerns, and/or comments do you have? 

    1. I do not have any questions, concerns, and/or comments after this week's lab and lecture.



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