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Earth’s Interior

Earth’s Interior. Based on the pattern of earthquake wave travel paths conclusions about the Earth’s interior has been concluded. The Earth is composed of several layers. The surface (crust) is the least dense of all layers. The inner core is the most dense of all layers

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Earth’s Interior

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  1. Earth’s Interior

  2. Based on the pattern of earthquake wave travel paths conclusions about the Earth’s interior has been concluded. • The Earth is composed of several layers. • The surface (crust) is the least dense of all layers. • The inner core is the most dense of all layers • The Earth early in its formation was essentially composed of a mix of molten materials. • Overtime the denser materials sank to the center, with the less dense layers forming layers, with the least dense layer at the surface

  3. Layers • The surface layer of the earth is called the crust. • There are two types of crust: • Continental and • Oceanic

  4. The next layer is the mantle. • Together the crust and the solid component of the upper mantle make up what is called the lithosphere • The lithosphere overlays the plastic (semi-molten) component of the upper mantle called the asthenosphere. • The remainder of the mantle is considered to be solid. • The layer below the mantle is the liquid outer core. The densest layer in the centre is solid is the inner core.

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