EVERYDAY SCIENCE

Detailed explanation-1: -There are four types of eruptions with properties determined mostly by the silica content of magma, and the amount of gas it contains. In order of increasing explosiveness, these are Hawai’ian, Strombolian, Vulcanian, and Plinian eruptions.

Detailed explanation-2: -The six eruption types are in order from least explosive to the most explosive; Icelandic, Hawaiian, Strombolian, Vulcanian, Pelean, and Plinian. Notice how, as the eruptions become more violent, the cone shapes become more steeply constructed. You will read about these volcanic types in more depth later in the lesson.

Detailed explanation-3: -Volcanic eruptions can be explosive, sending ash, gas and lava high up into the atmosphere, or the magma can form lava flows, known as effusive eruptions. Whether an eruption is explosive or effusive largely depends upon the amount of gas in the magma.

Detailed explanation-4: -Hydrothermal eruption: These eruptions include ash and not magma. Phreatic eruption: This is driven when the heat of the magma interacts with the water. Phreatomagmatic eruption: This eruption takes place when there is an interaction between the newly formed magma and water. More items