Subduction sketch time-lapse

In-class exercise as follows. (Sorry for the messy handwriting)
Sketch the general features of a downgoing slab, subduction zone, and upper plate (sketch from mid-ocean ridge to backarc).
What are the different rock types that enter a subduction zone?
Draw in isotherms (lines of constant temperature) at ~300oC and 1000oC
What metamorphic facies typically form in subduction zones and where?
What angle does the subduction zone make with the overriding plate?
Beneath the arc volcano, what is the depth of the subducting slab?
What is the contact between the overriding plate and the subducting slab like?
Where and what types of earthquakes occur in subduction zones?