Format:  10 multiple choice questions, 8 mini-essay/short answer, 6 fill-in-the-blanks (where you dredge terms up from memory), 3 matching, and 5 True/False.  There are 6 images/diagrams on the exam.

Things you should know:  The motions of the four types of seismic waves: P, S, Rayleigh, Love
Hanging Wall and Footwall, and how to tell the difference between the following types of faults:  reverse, normal, left-lateral strike-slip and right-lateral strike-slip.  You should also know the types of stresses associated with each type of fault.
Phase diagram - solidus, liquidus, geotherm (you really need to know what a geotherm is).
The chemical layers of the Earth (from top to bottom): Crust (oceanic and continental), mantle, core
The mechanical layers of the Earth (from top to bottom): Lithosphere, Asthenosphere, Mesosphere (lower mantle), Outer Core (liquid) and Inner Core (solid), and that most magma comes from the asthenosphere.
You should know what is meant by the following terms: partial melting, fractional crystallization, magma mixing, assimilation, cation, anion
Understand the difference between decompression melting and the addition of water to the mantle and where these occur.  Understand that volcanoes are NOT exactly at a convergent boundary--a trench is--the volcanoes are a bit away from the boundary.
Know what is meant by Ca-rich and Na-rich plagioclase feldspars and complete solid solution.  Know where the atoms go in the feldspar structure
Know the heat sources for the Earth:  Radioactivity, Accretional heating, Core solidification, Tidal heating, Core formation/differentiation.