Question

Which of the following volcanoes would you expect to erupt explosively : A volcano located near a subduction zone, or a volcano located on an island over a mantle hotspot? Explain your answer in terms of how the composition of the magma/lava impacts the physical properties (especially viscosity) of the magma, and how that would or would not lead to an explosive eruption. (7 points)

Answer 1

Answer:

The volcano over a mantle hotspot

Explanation:

I say this because lava comes from the grinding of those mantles, which melt rocks and make lava. If the mantles are super active, the lava will more than likely be explosive. Think of this (heat wise) as tea boiling in a kettle. The stove is the mantle, kettle as volcano and water as lava. When the mantles get hot enough they push that heat and pressure into the water, making it boil and when the steam starts to squeal out of the kettle, the volcano has erupted. Hope this helped!