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Niki Ward Ppt Niki Ward Ppt Presentation Transcript

  • 6TH Grade Science NC 3.01 Niki Ward 7-12-09
  • CONTENT ASSESSMENT END SHOW
  • 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.
  • Volcanoes go through “Life Stages”
  • 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.
  • •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.
  • •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
  • A. Thoilete Pillows B. Atoll C. Seamount D. Submarine Alkalics
  • A. Crater B. Vent C. Sill D. Dike
  • TRUE FALSE
  • 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
  • TRUE FALSE
  •  This is the correct answer to the question remember this answer because you may see it on an upcoming test!!!
  •  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!
  •  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