Many Catholic churches traditionally move St Patrick's Day to another date if March 17 falls during Holy Week. Many immigrants from Ireland fled to other parts of the world, including Australia, Canada, the United Kingdom and the United States, in the 19th and 20th centuries.
Making the world better, one answer at a time. Passive continental margins are not areas of convergence. There is little volcanic and earthquake activity on passive margins. Active margins are areas of convergence where one plate is descending beneath another. They are associated with volcanic and earthquake activity.
Related Links. Provide feedback on this mini-lesson. Volcanoes, earthquakes, and topography reveal whether a continental margin is active or passive. In this activity, students use the GeoMapApp tool to work with earthquake, volcano, and topographic data to identify active and passive margins. 1  Utilize earthquake data to locate subducting slabs.