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The Earth we live on is a very interesting feature by itself. It consists of 3 main parts of different rocks and substances that stretch more than 6000 km from the inner core to the surface crust. Looking at the interior structure of the Earth from a cross-sectional point of view, we can identify 3 main parts. They are the core, mantle and the crust.
The core is the very centre of the Earth and is subjected to extreme temperatures and pressure. It is partly solid and partly semi-liquid. The mantle is made up of rock materials and is sandwiched between the core and the crust. It consists of mainly solid rocks, but the upper mantle is actually a layer of semi-liquid molten rock called magma. This magma flows slowly underneath the crust. The crust is a relatively thin outermost layer of rocks that 'floats' above the mantle. It is made up of solid rocks which are divided into the continental and oceanic plates. These plates fit together like pieces of a puzzle.
The nature of the Earth's heating system and materials it consists of cause a process which
we have now known as Plate Tectonics. We will explain and introduce you to this relatively new theory.
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