Lava with a higher content of has higher viscosity.

if a large explosion causes the magma chamber below a volcano to empty, the volcano can collapse and form a

shield volcanoes can form when less lava flows quickly away from a vent.

during an oceanic plate convergence, the plate will sink.

the west coast of the united state has features formed by

during the of two tectonic plates, magma wills the space between two tectonic plates.

the only volcanic activity that is not formed at tectonic plate boundaries is

and volcanoes are linked severe weather events.

silica caldera viscous denser subduction divergence hot spots earthquakes

Explanation:

The lava that has more silica content is more explosive in nature, and if a volcano magma chamber explodes and causes the collapse of the volcanoes itself is known as a caldera. The shied volcanoes carry viscous lava when it flows form the vent and subduction is the process when the oceanic plate sinks due to the process of the convergence. Divergence is created features as it lies on the west coast of the united states. Hot spots are not formed by the volcanic activity at the plate boundary. Earthquakes and volcanoes are linked with several weather events.

C.about 10% i think