GEOLOGY

Detailed explanation-1: -When volcanoes erupt they can spew hot, dangerous gases, ash, lava and rock that can cause disastrous loss of life and property, especially in heavily populated areas. Volcanic activities and wildfires affected 6.2 million people and caused nearly 2400 deaths between 1998-2017.

Detailed explanation-2: -Volcanic eruptions produce three types of materials: gas, lava, and fragmented debris called tephra.

Detailed explanation-3: -Some volcanic eruptions are violent, spewing molten rock and gases into the air, while other volcanic eruptions are less explosive but equally damaging, because lava flows out of the volcano and spreads over large distances.

Detailed explanation-4: -The magma rises and collects in chambers within the crust. As magma fills the chamber, pressure grows. If the pressure gets high enough, the magma can break through the crust and spew out in a volcanic eruption.