why do we have different types of volcano?

Since material of coming out of the earth's core is different in different areas, the resultant changes are also different. If the megma is very hot 🔥🥵 more than 10000c,it is dark , thin and mostly flows quietly. The sides of such volcanoes have gradually slops. Colder, and hence more viscous, megma often erupts in explosions. The volcanic cone is steeper. Because of the heat in the earth's core, geysers (water fountain),solfataras (discharge of hot sulfuric gases),and hot 🔥water sources are found near the volcano. These are often used for heating in places such a lceland...