1. describe the different kinds of planetary and satellite maps. regarding the geological mapping of planets and satellites, what is a geological unit? explain the three-fold system of geological classification used on planetary and satellite maps. what are the main geological system names on the moon and mars? (list these in order for both the moon and mars.) describe the system of lettering that is used on planetary (and satellite) geological maps and explains the rationale of the lettering system. give some examples.

2. describe the nature and use of the principle of crater gradation in correlation. how is crater counting used in determining the age of planetary surfaces? what other ways do we have of determining the age of planetary surfaces? in other words, how can we apply relative age-dating principles from earth to other planets? what is a t-junction on a geological map and what can it tell you about relative age?

3. describe the structure of the outer solar system, including the kuiper belt and oort cloud. describe some of the objects and their orbits in the inner kuiper belt, including plutinos, kbos, ckbos, and others. name and describe some kbos. what are trojans and centaurs, where do they reside and where do they come from?

4. what is the geological history of the outer part of the solar system? how is the periodic activity or disturbance in the oort cloud related to the structure and behavior of our galaxy? what length of the cycle is thought related disturbance in the oort cloud? what are long-period comets and where do they come from?