Schalenbau der Erde: Aufbau Erdschichten - Plattentektonik & Vulkane 4

Geographie - simpleclub2 minutes read

The Earth is layered with a solid lithosphere, liquid outer core, and solid inner core, with the inner core reaching temperatures up to 5500 degrees Celsius. The lithosphere consists of the earth's crust and solid lower lithosphere, divided into continental and oceanic crust, floating on a layer of molten rock called magma.

Insights

  • The Earth's inner core, despite extreme temperatures, remains solid due to intense pressure from rock masses above, which raises the melting point of substances, showcasing the balance between temperature and pressure in maintaining its solid state.
  • The lithosphere, consisting of various plates floating on magma, resembles ice floes on a lake, highlighting the dynamic nature of Earth's structure and the constant movement of these plates contributing to geological phenomena like earthquakes and volcanic activity.

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Recent questions

  • What are the layers of the Earth?

    The Earth is structured into the lithosphere, mantle, and core.

  • What is the Earth's inner core made of?

    The Earth's inner core is composed of iron and nickel.

  • Why does the Earth's outer core remain liquid?

    The Earth's outer core is liquid due to lower pressure and high temperatures.

  • What is the lithosphere composed of?

    The lithosphere includes the Earth's crust and solid lower lithosphere.

  • How does the Earth's inner core remain solid?

    The Earth's inner core remains solid due to immense pressure from rock masses above.

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Summary

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Earth's Layers: Solid, Liquid, and Magma Movement

  • The Earth is structured into layers, similar to a peach: solid outer layer called lithosphere, liquid middle layer, and solid inner core made of iron and nickel.
  • The Earth's inner core has a radius of 6,371 kilometers and reaches temperatures up to 5500 degrees Celsius, due to radioactive elements like uranium generating heat.
  • Despite high temperatures, the Earth's inner core remains solid due to immense pressure from rock masses above, which increases the melting temperature of substances.
  • The Earth's outer core, located 3,000 to 5,000 kilometers deep, is primarily composed of iron and nickel, with lower pressure and temperatures up to 4000 degrees Celsius, causing it to be liquid.
  • Moving towards the surface, the Earth's mantle consists of a lower mantle, almost solid but slowly moving, and an upper mantle divided into a plastic flow zone and solid lower lithosphere.
  • The lower lithosphere remains solid due to lower temperatures, while the upper mantle's plastic flow zone allows rock to melt into magma.
  • The lithosphere includes the solid lower lithosphere and the earth's crust, divided into the continental crust (thicker, on land) and the oceanic crust (thinner, in the sea).
  • The lithosphere, made up of several lithospheric plates, floats on a layer of molten rock called magma, with the movement of these plates akin to ice floes on a lake.
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