Format of the test:  35 multiple choice questions; 15 fill-in-the-blank where the possible answers are listed

Some of the questions may be from exams 1 and 2, so you should look over those exams.  Some of the questions are from your homeworks.

You should be familiar with the material from Volcano Cowboys that was covered in homeworks and previous exams.

You should be familiar with the what the following terms mean: pyroclastic flow, aa, pahoehoe, eruption column, fire fountain, aphanitic, phaneritic, vesicular, felsic, intermediate, mafic, ultramafic, lahar, sill, dike, batholith, stock, volcanic neck, laccolith, lopolith, lateral blast, dome, shield volcano, stratovolcano, composite volcano, cinder cone, caldera, maar, tuff ring, spatter cone, volcanic tremor.

For the textures aphanitic, phaneritic, vesicular, you should understand what these mean in terms of where the rock solidified

Noncrystalline igneous rocks:  scoria, tuff, pumice, volcanic breccia, obsidian
Crystalline igneous rocks: rhyolite, andesite, basalt, peridotite, gabbro, diorite, granite
Know the main minerals associated with each type of crystalline igneous rock

Plate tectonics and the structure of the Earth - Know the three types of plate boundaries and what occurs at each.  Know what the words "orogeny", "subduction", and "ophiolite" mean.
Know the difference between the mechanical and compositional layers of the Earth.  The compositional layers are: continental crust (made of felsic rock), oceanic crust (made of mafic rock), mantle (made of ultramafic rock), core (made of iron-nickel metal).  The mechanical layers are lithosphere (cold, brittle rock comprised of both crust and mantle), asthensophere (mantle rocks that are near their melting temperature), mesosphere (lower mantle), outer core (liquid metal), and inner core (solid metal).  Note that magma comes from the asthenosphere (in a relatively shallow part of the mantle).

Be familiar with what occurred during the following eruptions:
1980 Mt. St. Helens
1985 Nevado del Ruiz
1991 Mt. Pinatubo
1991 Mt. Unzen
1783 Laki