If an unreferenced image underwent differential scaling (but no other change) during geometric transformation, what has changed in the georeferenced image?

Briefly explain what residuals are, with regard to control points and georeferencing.

Briefly explain what differential GPS is and how it differs from regular GPS.

A clearinghouse is ________, whereas a geoportal is ________.

Identify and briefly explain one specific source of error in GPS positioning.

Match the data structure with the method of data storage. 

The origin of a raster is at the ______corner of the raster:

Briefly explain how you would know whether an aerial image of a city were orthorectified, just by looking at the image.

List the three types of simple (not composite) vector features used in GIS along with the geometric properties of each.

What is a datum? AND provide one specific example.