Exam 5: Weathering and Soil

What is the main reason that ray paths of seismic waves are curved like dipping arcs, rather than proceeding along the straightest, shortest path as they pass through the whole earth?

The _______is the site of initial rupturing associated with an earthquake.

How can the exact distance to an earthquake be determined if you only have a single seismic station to record it?

Name two drawbacks of having to rely on "felt" intensity scales to estimate an earthquake's size.

The P- wave shadow zone is largely the result of__________ .

What causes mud and sand volcanoes or geysers in a modern delta or low tide beach setting?

On a typical seismogram, __________will show the highest amplitudes.

Which of the following foundation materials is most stable during earthquake shaking?

The ____________is directly related to the Richter earthquake- magnitude rating.