Earthquakes are caused by sudden movement in opposing tectonic plates in the earth. As plates move against each other, sometimes the rocky edges catch against one another. The rest of the plate remains in motion, putting... More »

When a tsunami occurs, it's typically in response to an earthquake, and oceanic waves grow to large proportions, increasing their rate of causing damage. Other natural earth forces can cause tsunamis as well, including m... More »

Earthquakes have a number of profound effects on local ecosystems, but the most important effect earthquakes have is that they change habitats abruptly. Earthquakes can cause trees to fall, cliffs to crumble and caves to... More »

The earthquake in Haiti was the result of sliding plates between North America and the Caribbean. The plates are slabs that cover the Earth and resemble a giant jigsaw puzzle. The plates are constantly creeping past each... More »

Alexander Besant of the Global Post explains that the 2012 Sumatra earthquake resulted from up to five faults in the tectonic plates under the ocean floor. Besant makes reference to a study explaining that the faults act... More » Science Earth Science Earthquakes

Like most earthquakes, the 1556 Shaanxi earthquake occurred due to the sudden shifting of tectonic plates against each other. Tectonic plates are large chunks of the earth’s crust, and the cracks between these chunks are... More »

An earthquake is defined as a series of vibrations within the earth's crust that are caused by the rupture of its rocks. This rupture is due to the gradual accumulation of elastic strain within the crust. More »