Super Simple Earthquake Projects: Science Activities for Future Seismologists
SUPER SIMPLE EARTH INVESTIGATIONS SUPER SIMPLE EARTHQUAKE PROJECTS Science Activities for Future Seismologists JESSIE ALKIRE CONSULTING EDITOR DIANE CRAIG M A READING SPECIALIST Super Sandcastle An Imprint of Abdo Publishing abdopublishing com
4 WHAT IS AN EARTHQUAKE An earthquake is when the ground shakes It begins deep beneath Earth's surface An earthquake can cause a lot of damage There is sometimes a sequence of three earthquake stages FORESHOCKS The first stage is foreshocks These are small quakes that occur before a larger one But a quake isn't called a foreshock until a larger one happens after it EARTHQUAKE DAMAGE
5 MAIN SHOCK The second stage is the main shock It is larger than any of its foreshocks The main shock can be very dangerous It can cause large structures to fall down AFTERSHOCKS The third stage is aftershocks These are smaller quakes that follow the main shock Aftershocks can happen weeks or months after the main shock Some continue for years EPICENTER An earthquake starts in one area This is called the epicenter The earthquake is strongest at the epicenter The quake gets weaker as it moves away from the epicenter EARTHQUAKE WEAKENS WITH DISTANCE EPICENTER
