Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.
Using data from the 1906 San Francisco earthquake, Harry Fielding Reed devised Elastic Rebound theory. This theory explains how stresses build up to eventually rupture in a large earthquake.
Reviews the massive Good Friday earthquake of 1964 in Alaska led to the development of modern seismology.
Learn how quakes happen on the Moon and Mars, like earthquakes but with different causes.
Animation on how earthquake waves move around (and through) the Earth.