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Volcanoes form when magma rises up from under the earth's crust through vents and fractures. The document discusses how plate tectonics can cause pressure to build, pushing magma upwards and causing volcanic eruptions. It also explains key volcano features like magma, dikes, sills, vents, and craters. Volcanic eruptions ultimately change the lithosphere by creating new mountains and landforms on the earth's surface.
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This document provides an overview of volcanoes and plate tectonics. It begins with objectives and introduces volcanoes and their relationship to the layers of the Earth. It describes how plate tectonics theory explains that crustal plates slowly move across Earth's surface, concentrating volcanoes at plate boundaries. There are three main types of plate boundaries that form different types of volcanoes. The document then discusses the structure of volcanoes and how they form as pressure releases from Earth's interior. It aims to help readers understand where volcanoes come from and why they erupt.
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1) Caves form underground from water dissolving limestone over thousands of years, creating intricate mineral formations and unexpected environments.
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3) In addition to their geological features, caves have also been inhabited by humans and featured ancient cave cities, as well as modern establishments like luxury hotels carved within caves.
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This document discusses key aspects of volcanism including:
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www.facebook.com/marktito.cardeno17
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Plate Tectonics
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Tectonic Plates
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Plate Tectonics Essay
Plate Tectonics Essay
layers of the earth
The document summarizes key information about the structure and composition of the Earth. It describes the four major layers from the center out - the inner core, outer core, mantle, and crust. The crust is divided into tectonic plates that move via three processes at their boundaries: convergent, divergent, and sliding. Earthquakes and volcanoes occur as results of this plate tectonic activity and the movement of molten rock within the Earth.
Plate Tectonics II
The document discusses evidence for plate tectonics including measurements over 10 years showing the movement of tectonic plates and geological studies of ocean floor rocks. Volcanoes, earthquakes, and tsunamis are linked to plate tectonic boundaries as plates diverge, converge, or a hot spot rises. Examples include the Hawaiian Islands formed by a hot spot and volcanoes and quakes at the Mid-Atlantic Ridge. Historic quakes like 1989 in San Francisco and tsunamis such as the 2004 Indian Ocean and 2011 Tohoku, Japan events are also summarized.
Unit 7 Earth's dynamics
This document provides an overview of plate tectonics and related geological phenomena. It discusses the three main types of plate boundaries: convergent, divergent, and transform. Convergent boundaries form trenches and mountains, divergent boundaries form ocean ridges and create new lithosphere, and transform boundaries involve lateral plate movement. Plate tectonics theory holds that plate interactions cause volcanoes, earthquakes, and mountain building. The document also examines earthquakes, seismic risk maps, and volcanoes, defining key terms and risks associated with each.
Livingwithearthquakesandvolcanoes 101001170840-phpapp02
The document describes an earthquake that struck the Iranian city of Bam in 2003. The earthquake, measured at 6.6 on the Richter scale, was caused by the pushing together of the Iranian and Arabian tectonic plates. Over 20,000 people were killed when the earthquake destroyed thousands of homes in Bam. Emergency services struggled to help those injured and trapped in the rubble due to damaged roads and collapsed buildings. The earthquake devastated the historic structures in Bam, including the famous 2,000-year-old citadel.
E&U L6
The document discusses tectonic plates, earthquakes, and volcanoes. It explains that the Earth's outer layer is made up of giant slabs of rock called tectonic plates that can move in three ways: moving away from each other at oceanic ridges, pushing together to form mountains, or sliding past each other along faults. Most destructive earthquakes occur at subduction boundaries where plates push together, which may also cause tsunamis. Volcanoes form at plate boundaries where the Earth's crust is stretched, compressed, or uplifted. The movement of tectonic plates contributes to the rock cycle.
Earth changes6 09
Volcanic eruptions, earthquakes, and landslides are three processes that can change the Earth's surface. Volcanoes produce gases, liquids, and solids from inside the Earth that alter the landscape. Earthquakes cause the Earth's surface to shake and shift, sometimes triggering landslides or tsunamis. Landslides make sudden changes by causing rocks and debris to slide down slopes. While Earth's changes generally occur slowly, these processes can also result in rapid and violent transformations of the surface.
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Niki Ward Ppt
- 1. 6TH Grade Science NC 3.01 Niki Ward 7-12-09
- 3. http://www.youtube.com/watch?v=He c9yk-QQ4o •A volcano is a vent: a fissure in the earth's crust (or in the surface of some other planet) through which molten lava and gases erupt •Volcanoes change the Lithosphere by creating Faults, and mountains in the Earth’s Surface •The prime cause of a volcano eruption is the movement of the tectonic plates. This causes pressure at the base of the volcano pushing the magma upwards.
- 4. Volcanoes go through “Life Stages”
- 5. http://www.youtube.com/watch?v=He c9yk-QQ4o •A volcano is a vent: a fissure in the earth's crust (or in the surface of some other planet) through which molten lava and gases erupt •Volcanoes change the Lithosphere by creating Faults, and mountains in the Earth’s Surface •The prime cause of a volcano eruption is the movement of the tectonic plates. This causes pressure at the base of the volcano pushing the magma upwards.
- 6. •Before lava hits the air it is known as magma. Magma is under pressure when it is below the Lithosphere •The Sill is the stem of Magma that is in between the Earth’s surface and the base of the volcano •The vent is in the middle of the volcano and is the passage for magma to travel when there is too much built up pressure •The Dike is a visible vein in the volcano it is the path of magma. •The Crater is the very top of the volcano where the opening is. •The magma becomes lava as soon as it reaches the crater. •From the explosion comes a mixture of gasses, ashes, and cinders this is often what people see first when the volcano is in the eruption process.
- 7. •Once the eruption is over the Lava cools, hardens and cracks creating a new surface •The ground is very fertile and new vegetation life grows. •There is a residue of hard molten rocks which people use to help build roads and even buildings
- 8. A. Thoilete Pillows B. Atoll C. Seamount D. Submarine Alkalics
- 9. A. Crater B. Vent C. Sill D. Dike
- 10. TRUE FALSE
- 11. A. By creating Faults, and mountains in the Earth’s Surface B. By covering the surface with a new smooth layer of soil C. By producing new areas for lakes D. It does not change the lithosphere
- 12. TRUE FALSE
- 13. This is the correct answer to the question remember this answer because you may see it on an upcoming test!!!
- 14. Don’t give up try to think back to what we have talked about in this unit! Make sure you learn the correct answer because you may see this in an upcoming test!
- 15. http://images.google.com/imgres?imgurl=http://starryskies.com/solar_system/venus_html/la va_domes2.jpg&imgrefurl=http://starryskies.com/solar_system/venus_html/volcanism_on_ven us.htm&usg=__njil-jwtWNO2pASXFyj8EYkK- 0Y=&h=376&w=477&sz=36&hl=en&start=11&um=1&tbnid=6fvGnr33GTKKoM:&tbnh=102&t bnw=129&prev=/images%3Fq%3Dlava%26hl%3Den%26safe%3Dactive%26rls%3Dcom.microsoft: *:IE-SearchBox%26rlz%3D1I7DKUS%26sa%3DN%26um%3D1 http://www.hellagems.com/blog/wp-content/uploads/2009/01/volcano-diagram.gif http://images.google.com/imgres?imgurl=http://www.odec.ca/projects/2007/lund7j2/volcano.jpg&i mgrefurl=http://www.odec.ca/projects/2007/lund7j2/what_are_they.htm&usg=__ZNaSrmcEv3pVp4- 74-bERv_7Eqs=&h=700&w=531&sz=29&hl=en&start=55&um=1&tbnid=-fkt- KlVUKss_M:&tbnh=140&tbnw=106&prev=/images%3Fq%3Dvolcano%26ndsp%3D20%26hl%3Den%26saf e%3Dactive%26rls%3Dcom.microsoft:*:IE- SearchBox%26rlz%3D1I7DKUS%26sa%3DN%26start%3D40%26um%3D1 Volcano World! http://volcano.oregonstate.edu/education/hawaii/flow_rate/rates.html http://www.youtube.com/watch?v=Hec9yk-QQ4o