Earthquakes are formed by a sudden, violent underground movement of the Earth's crust. These natural phenomena typically occur along a fault line or fault plane, which is a geological region of compressed rocks dividing ... More » Science Earth Science Earthquakes

Earthquakes are usually triggered when rock located beneath the ground, on top of fault lines, breaks and suddenly releases a significant amount of energy. The immediate and rapid release of energy caused by earthquakes ... More » Science Earth Science Earthquakes

The circum-Pacific seismic belt, often referred to as the Ring of Fire, experiences more earthquakes than anywhere else on Earth. The belt stretches from the southern tip of the Americas north to Alaska, across the Beari... More »

While earthquakes can occur almost anywhere, they are most common around the edges of the great tectonic plates of the Earth's crust. The plates are always in motion, and the edges tend to rub up against one another, bui... More »

Most earthquakes happen along the boundaries of the tectonic plates that make up the Earth's crust, though earthquakes can happen anywhere on the planet. Earthquakes are also common along faults, which are deep fissures ... More »

Earthquakes occur due to the movement of tectonic plates in the Earth's crust. Plates constantly shift and move, building energy. The release of that energy is an earthquake. More » Science Earth Science Earthquakes

Faults form in the Earth's crust when stress from underlying rock movements causes the more brittle surface rock to crack or slip. The result is a discontinuity in the landscape that can be either laterally displaced, su... More »