convection Chapter 2 – The Way the Earth Works: Plate Tectonics What type of plate boundary do earthquakes occur at? What type of plate boundary do volcanoes occur at? Earthquakes- convergent and transform boundaries Volcanoes- convergent plate boundary Subduction zones of oceanic/continental plates or collision of continental plates. What are the three main types of plate tectonic boundaries and any subdivisions of each? What are the plate motions relative to each other? What are
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The Dynamic Crust‚ Earthquakes and the Earth’s Interior Why is the Earth’s crust described as being dynamic? Crust- solid rock outer zone of Earth The crust is part of the lithosphere. The Earth’s crust is dynamic which means constantly changing. Earthquakes Volcanoes Crustal movements along fault zones Other evidence indicates that parts of the Earth’s crust have been moving to different locations for billions of years. Describe pieces of evidence that suggest minor changes in the Earth’s
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plates [tectonic plates: Large areas of the Earth’s crust that move slowly on the upper part of the mantle‚ often colliding and moving away from each other. ]‚ which are in constant motion. Earthquakes and volcanoes are most likely to occur at plate boundaries. 1.1 The structure of the Earth The Earth is made up of four distinct layers: 1. The inner core is in the centre and is the hottest part of the Earth. It is solid and made up of iron and nickel with temperatures of up to 5‚500°C. With its
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EAR 105 extra-credit study guide. This is both a study guide and an extra credit assignment worth 10 points on your exam! Using your class notes and the book‚ please answer the following questions with words or with sketches. Use this as a study guide. Remember‚ it will count as extra credit toward your test grade. You may work in groups of 4 or less. If you do work in groups‚ all names go on ONE copy that is handed to me. You may work on separate sheets of paper‚ or answer using this document
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called volcanology. Divergent plate boundaries: At the mid-oceanic ridges‚ two tectonic plates diverge from one another. New oceanic crust is being formed by hot molten rock slowly cooling and solidifying. The crust is very thin at mid-oceanic ridges due to the pull of the tectonic plates. The release of pressure due to the thinning of the crust leads to adiabatic expansion‚ and the partial melting of the mantle causing volcanism and creating new oceanic crust. Most divergent plate boundaries are at the bottom of
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eruption. Deep-sea trenches are a notorious bathymetric feature of convergent plate boundaries which often form at subduction zones‚ where one converging plate is moving beneath the other‚ hence their deep nature. As this plate descends further into the mantle‚ magma rises and partially melts the overlapping mantle; this may lead to a violent eruption which will come to form volcanoes and island arcs ("What Features"). Transform plate boundaries do not have a specific bathymetric feature‚ although they do
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How volcanoes and Earthquakes are formed- Part 1- an introduction to the moving earth PART 1: 1. Review from your 7th grade lessons the layers of the earth‚ from the following website. http://volcano.oregonstate.edu/vwdocs/vwlessons/lessons/Earths_layers/Earths_layers2.html Label the picture below showing which layer is which. Then answer the following questions. QUESTIONS 1. Which layer is the densest? 2. Which layer has the ability to flow? PART 2: 2. Here you will answer the question:
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caused by convergent tectonic plates coming together. By contrast‚ volcanoes are not usually created where two tectonic plates slide past one another. Volcanoes can also form where there is stretching and thinning of the Earth’s crust in the interiors of plates‚ e.g.‚ in the East African Rift‚ the Wells Gray-Clearwater volcanic field and the Rio Grande Rift in North America. This type of volcanism falls under the umbrella of "Plate hypothesis" volcanism.[1] Volcanism away from plate boundaries has also
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Of all terrestrial planets we know of‚ Mercury’s geology is the most unknown. This is because of its closeness to the sun‚ making human observation via spacecraft and from Earth very difficult. There are many craters on Mercury that are made from a particular impact. There is also balsatic rock and plains which are made in the event of a massive volcanic eruption. There are also vents‚ made when a magma chamber collapses. Mercury’s density has produced a solid iron core that accounts for 60% of its
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locate the epicenter of a quake. There are a few other types of waves including the Love waves and Rayleigh waves. Three common plate margins along which earthquakes occur The three common plate margins in which earthquakes occur are convergent boundaries‚
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