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.