Please enable JavaScript.

Coggle requires JavaScript to display documents.

Clil interrogazione - Coggle Diagram

- - - - The Earth is in continuous activity and the energy inside the Earth causes
      - phenomena that can be destructive (earthquakes) and change the Earth’s
      - surface like the movements of continents.
    - - Thanks to some of his observations he presented the theory of continental
      - drift: 250 million years ago all the land masses were joined together in one
      - big continent: Pangea, surrounded by one big ocean, Panthalassa
    - - Wegener had four types of evidence for his theory:
      - 1) Geographic evidence: the complementary shapes of the continents
      - 2) Paleontological evidence: fossils show that the same species lived in
      - fa-away lands
      - 3) Geological evidence: the rock layers of some continents very far from
      - each other are the same
      - 4) Climatologic evidence: all the sedimentary rocks formed 200 million
      - years ago in the southern continents are of glacial origin
  - - - Metamorphic rocks are formed by great heat and pressure.
      - Igneous rocks are formed by volcanoes.
      - Sedimentary rocks are formed by years and years of
        sediment compacting together and becoming hard
  - - - Crust
        
        The most external layer and the thinnest one (Arrond 70 kilometers thick onthe land (called continental crust) and arround 5 Km thick in the cocean floor
        
        It is made up of rocks that consist primaliry of silica and alluminia
      - Mantel
        
        is the second layer of the hearth and also the largest one (3000 km thick) it's made up by slightly different silicate rock and mora magnesium and iron
      - Outher core
        
        The Earth's outer core is made up of iron and nickel and is very hot (4400 to 5000
        
        C°). It is so hot that the iron and nickel metals are liquid! The outer core is very
        
        important to earth as it creates something called a magnetic field. This magnetic field
        
        goes way out into space and makes a protective barrier around the earth that shields
        
        us from the sun's damaging solar wind.
      - Inher core
        
        The Earth's inner core is made up of iron and nickel, just like the outer core, but it is
        
        different. The inner core is so deep within the earth that it's under huge pressure. The
        
        pressure is so high that, even if it is so hot, it is solid. The inner core is the hottest
        
        part of the Earth, and, at over 5000 C°, it is about as hot as the surface of the sun.
  - - - Although we think of the land on Earth as fixed and stable, it is constantly
      - moving. This movement is so slow that we cannot notice it, in fact it only
      - moves between 2 and10 cm per year. It takes millions of years for the land to
      - move significantly.
    - - Major and Minor Tectonic Plates
      - Most of the Earth is covered by seven major plates and other minor plates.
      - The seven major plates include the African, Antarctic, Eurasian, North
      - American, South American, India-Australian, and the Pacific plates. Some of
      - the minor plates include the Arabian, Caribbean, Nazca, and Scotia plates.
    - - Convergent
        
        Sometimes one plate will move under the other.
      - Divergent
        
        two plates are getting pushed apart.
      - Transform
        
        two plates slide past each other.