Draw a plate tectonics diagram. For each item you should be able to give a short description of what it is, and/or what is happening.
For a complete diagram, make sure you know all of the following:

a. Core

b. Mantle

c. Oceanic crust

d. Continental crust

e. Convection currents (at least 4)

f. Ocean-ocean collision

g. Ocean-continental collision

h. Continental-continental collision

i. Continental-continental divergence

j. Ocean-ocean divergence

k. For f-j also include what forms above them at the crust

l. The locations for the formation of sedimentary, metamorphic and igneous rocks

m. Weathering

n. Erosion

o. Sedimentation