![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgpM_kgyEK9F-i8RVRujGR9p5JfmmCnPQsJMd8LbJif8sOWz1tMGHyhNVj6DsoZUo34P8M1UBkqCr237ykKMKJ1Q0ozQgsj1oUVopQTetFGtiORSJSdDGUOYsg7wcrmza4nS2yWnkJmWL4C/s320/uesc_04_img0203.jpg)
I am writing about earthquakes as part of the element earth. Earthquakes occur when there is a sudden release of energy from the earth's crust. This energy creates seismic waves. Earthquakes are recorded using a seismograph. The Richter scale measures the amount of seismic activity, above 7 causing serious damage and below 3 being imperceptible. The Mercalli scale measures the intensity of shaking. When the epicentre of a big earthquake occurs off-shore then there might be enough movement on the seabed to cause a Tsunami.
I got this image from www.scienceclarified.com/Di-El/Earthquake.html
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