The earth
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The earth

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This is a powerpoint I made for a university assignment, it was made with 7th grade in mind and is on The structure of the earth with a brief overview of plate tectonics.

This is a powerpoint I made for a university assignment, it was made with 7th grade in mind and is on The structure of the earth with a brief overview of plate tectonics.


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The earth The earth Presentation Transcript

  • The Earth
    -Structure
    -Tectonic Plate Theory
  • The Earth
    The earth is made up of _____ main sections.
    These are the core, the mantle and the crust.
    Each section is _________ and all three sections contribute to how the earth is ______.
    View slide
  • View slide
  • The Core
    • The center of the _____ is known as the core.
    • The core is made of ___ segments, the molten metal (Iron) section and the _____ Iron segment.
    • The heat from the core _____ into the next section of the earth, the mantle and ______ it to melt.
  • Liquid Outer Core
    Solid Inner Core
  • The mantle
    • The mantle mainly consists of _____, which is made of ______ minerals.
    • The heat from the core causes the hot magma to ____. It cools as it magma _____ again.
    • This is ______ a convection current
  • Mantle
  • The Crust
    • The crust is the final layer of the earths _________ is the crust.
    • It consists of separated ______.
    • These plates float on the ___ of the mantle.
    • The plates move as the follow the convection _______. This process takes many ______ and is called the Tectonic Theory.
  • Crust
  • The Lithosphere
    • The lithosphere is the name scientists give to the layer that is made by the crust and upper mantle.
    • All together, this is about 75-100KM _____ beneath continents but only about 55KM thick beneath ______.
  • Plate Tectonics
    • This theory ________ how mountains, volcanoes, and earthquakes, are formed.
    • 200 _______ years ago, there was only one big continent called _______. It _____ up to form the continents we see today.
    • The continents are still ______ today.
  • So, once again…
    • Core, both inner and outer
    • Mantle
    • Crust
    • Lithosphere
    • Plate tectonics