Earthquakes are caused by the movement of tectonic plates, sending shock waves through the earth. This can harm cities and towns near fault lines, or even cause tsunamis on coasts. This book introduces readers to what happens during an earthquake, as well as its causes and effects. Readers will get an up-close look at the threats posed by earthquakes, and how people can be prepared to survive this natural disaster. Vibrant photographs and achievable text will hook readers' interest as they encounter some of the most catastrophic quakes on Earth.