Dynamic Planet B

National FAQ: "Geophysical tools to obtain data to interpret physical structure of the Earth." This item is a little vague - can you supply a list of tools, or at least an idea of what kind of tools that should be covered? (section: 3 / paragraph: l / sub-paragraph:  / line: 1)

A: By far the most important geophysical tool for revealing earth's structure is seismography. Students should be familiar with both natural and controlled-source methods, how they work, and what they reveal, at a minimum. Additional important tools include magnetometry, gravimetry, and ground-penetrating radar. There are more, but these are the ones most likely to be assessed in the event.