Which of the following occurs during a continental collision, after any subduction has ended?

A) the descending continental plate gets hotter and decreases in pressure
B) decreasing pressure causes downgoing crust to melt
C) volcanoes are widespread above continental collisions
D) all of these
E) none of these

Which of the following does NOT describe continental rifting?

A) if rifting continues the continent will remain intact
B) occurs on a continent
C) includes a broad uplift of the land surface as magma ascends

A volcanic neck can form by:

A) erosion of the volcano, leaving behind the solidified conduit inside the volcano
B) erosion of overlying rock layers exposing the conduit below the volcano
C) both of these

Which of the following factors makes a site near a volcano relatively more dangerous?

A) the nearby slopes on the volcano are gentle
B) a site that is within a valley that drains the volcano
C) a site that is upwind from the volcano
D) all of these
E) none of these