Super Simple Earthquake Projects: Science Activities for Future Seismologists

Super Simple Earthquake Projects: Science Activities for Future Seismologists — page 3
6 WHAT CAUSES EARTHQUAKES Earth's crust is made up of pieces called tectonic plates Tectonic plates move slowly This movement causes earthquakes The plates move three different ways This creates three types of boundaries between the plates CONVERGENT BOUNDARY Some plates move toward each other They press together One plate may slide under the other plate This can cause mountains to form The Cascade Range in western North America was formed this way