The Pacific-North American Plate Boudary also called the San Andreas Fault
convergent plate boundary and the pacific plate
divergent
California is located on the plate boundaries for the North American Plate and the Pacific Plate.
Eyjafjallajökull is near the boundary between the North American Plate and the Eurasian Plate and is also on a hot spot.
If we consult a map showing tectonic plates, we can see that Mauna Loa is on the Pacific plate. The general rule is that volcanic activity usually appears along plate boundaries, but Mauna Loa and the Hawaiian Islands sit on what is called a hot spot in approximately the middle of Pacific plate.
Destructive plate margins, we know this because it erupts rarely yet violently and earthquakes can happen there too.
Mt. St. Helens is located on a convergent boundary between the Juan de Fuca and North American plates.Mount st. Helens is on a convergent boundary.
mount aso is a ocianic plate boundry as it is near enough in sea water and it full of it but does no sit on sea water mount aso is on land but through the middle of the volcano is underwater. any questions :)
The Hawaiian Islands are not on or near to a plate boundary. One explanation is that the Hawaii volcanoes sit on top of a hot spot in the mantle called a 'mantle plume'. This theory is however being challenged and other causes of mantle melting are being proposed see the link below.
idk go look it up urself im nice so ill tell u: convergent weel that is not very nice
nothing
mount Kilimanjaro sits on a divergent plate boundry