Question: what are the 4 types of volcanic eruptions?
Answer: Hydrothermal eruption. An eruption driven by the heat in a hydrothermal systems. ... 
Phreatic eruption. An eruption driven by the heat from magma interacting with water. ... 
Phreatomagmatic eruption. ... 
Lava. ... 
Strombolian and Hawaiian eruptions. ... 
Vulcanian eruptions. ... 
Subplinian and Plinian eruptions.