Earthquakes are sudden, violent shaking of the ground caused by movements along faults or volcanic activity, releasing energy stored in the Earth's crust. Articles are a unique way for readers to learn about the world around them. In addition to building reading comprehension skills and increasing vocabulary, articles can be used for writing and research. Earthquakes is broken into 6 single-page sections: What are Earthquakes?, How Earthquakes Happen, Measuring Earthquakes, Effects of Earthquakes, Staying Safe, and Words to Know.