What creates lava and how does lava become molded

Lava is molten rock. It is created deep beneath Earth's surface (often 100 miles or more underground), where temperatures get hot enough to melt rock. Scientists call this molten rock magma when it's underground.Lava is molten rock.

It is created deep beneath Earth's surface  where temperatures get hot enough to melt rock.
Eventually, some magma makes its way to Earth's surface and escapes via a volcanic eruption. When magma erupts onto Earth's surface and begins to flow, scientists then call it lava. 

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Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the