True or False? Lava is just magma from Earth's mantle that has escaped to the surface.

A volcanic eruption is one way that Earth's hot interior expels some heat. Earth's interior is very hot; hot enough to melt rocks. This molten rock, along with hot gas, is called magma. This hot mixture moves towards Earth's surface and is able to escape to the surface, either through a crack or fissure in the Earth's crust. The magma that thus escapes to the surface of Earth is known as lava. Depending on the viscosity of the lava, volcanic eruption may be different. If the lava is fluid, that is, has low viscosity, it runs down the slopes quickly. If, on the other hand, the lava is viscous, the hot gases are unable to escape to the atmosphere and we observe a violent expulsion of the hot lava. 

Thus, the given statement is true.

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