[Free Registration/Login Required] Explore this interactive to see which earthquakes had the largest magnitude on the Richter Scale, then answer a challenge question.

[Free Registration/Login may be required to access all resource tools.] Covers the scales scientists use to measure the size and intensity of earthquakes.

A calculator to show the difference in magnitude between earthquakes. Understand that the Richter scale used to measure earthquakes is base-10 logarithmic scale.

An activity-based program designed to introduce the concepts of how an earthquake epicenter is located and how the Richter magnitude of an earthquake is determined.

This Fordham University article is written by Rev. Charles Davy a citizen of Lisbon when the city was hit by an earthquake measuring 8.75 on the richter scale. Discusses the devastation in detail.

This outstanding website provides an excellent variety of hands-on earthquake activities to help you understand what causes earthquakes.

This resource provides definitions of important earthquake related terms.

Discover the true powers of Mother Nature through this vivid collection of research which delves into the causes of natural disasters and the impacts on those affected.

A video and a short multiple-choice quiz on earthquakes, how they form, how they are measured, and the ways they can change the surface of the Earth.

Lesson covering earthquake basics and designing structures that can withstand earthquakes. Students are tasked with building earthquake-proof structures using marshmallows, spaghetti, and the option of bamboo skewers. These are then...

Read the questions students most often ask about earthquakes and read the answers.

Students learn how engineers characterize earthquakes through seismic data. Acting as engineers, they use real-world seismograph data to locate earthquake epicenters via triangulation and determine earthquake magnitudes.