Question

two minutes short speech on core of volcano​

Answer 1

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The Earth's crust has 17 major, rigid tectonic plates. These float on a hotter, softer layer in its mantle.[2] Volcanoes are often found where tectonic plates are moving apart or coming together. Volcanoes can also form where there is stretching and thinning of the crust's plates, e.g., in the East African Rift.[3] Volcanoes are usually not found where two tectonic plates slide past one another.Volcanism away from plate boundaries is caused by mantle plumes. These so-called "hotspots", for example Hawaii, are thought to arise from upwelling magma from the core–mantle boundary, 3,000 km deep in the Earth.Most volcanoes have a volcanic crater at the top. When a volcano is active, materials come out of it. The materials include lava, steam, gaseous sulfur compounds, ash and broken rock pieces.When there is enough pressure, the volcano erupts. Some volcanic eruptions blow off the top of the volcano. Sometimes, the magma comes out quickly and sometimes it comes slowly. Some eruptions come out at a side instead of the top.

The Earth's crust has 17 major, rigid tectonic plates. These float on a hotter, softer layer in its mantle.[2] Volcanoes are often found where tectonic plates are moving apart or coming together. Volcanoes can also form where there is stretching and thinning of the crust's plates, e.g., in the East African Rift.[3] Volcanoes are usually not found where two tectonic plates slide past one another.Volcanism away from plate boundaries is caused by mantle plumes. These so-called "hotspots", for example Hawaii, are thought to arise from upwelling magma from the core–mantle boundary, 3,000 km deep in the Earth.Most volcanoes have a volcanic crater at the top. When a volcano is active, materials come out of it. The materials include lava, steam, gaseous sulfur compounds, ash and broken rock pieces.When there is enough pressure, the volcano erupts. Some volcanic eruptions blow off the top of the volcano. Sometimes, the magma comes out quickly and sometimes it comes slowly. Some eruptions come out at a side instead of the top.Volcanoes are found on planets other than Earth. An example is Olympus Mons on Mars