earthquakes are caused mostly by rupture(破裂, 裂开) of geological faults(断层), but also by volcanic activity, landslides, mine blasts, and nuclear experiments. an earthquake's point of initial rupture is called its focus or hypocenter. the term epicenter means the point at ground level directly above this.反馈 收藏
Thousands of temblors occur every day. Here’s what you need to know about where they usually take place and how they're measured.
called the "Ring of Fire" because of the preponderance of volcanic activity there as well. Most earthquakes occur at fault zones, where tectonic plates—giant rock slabs that make up the Earth's upper layer—collide or slide against each other. These i...
few millimeters to thousands of kilometers and are found all over the world. However, many faults are inactive, meaning they do not have earthquakes that occur. Active faults are faults where earthquakes do occur. The term fault came from the Old French termfalte, which means opening or gap...
Earthquakes happen at places calledfaults(orfault lines) where the jagged edges of tectonic plates grind against one another. Most earthquake activity happens in the middles of the oceans where tectonic plates are pushing apart on the floor of the sea. Some of the most violent earthquakes happen...
How do earthquakes happen? Earthquakes happen all the time, on land and in the ocean – but the majority are so small that people do not even feel them. "The surface of the earth is made of tectonic plates, which are about 100 kilometers thick, they move around together. ...
Initsmostgenericsense,thewordearthquakeisusedtodescribeanyseismicevent—whetheranaturalphenomenonoraneventcausedbyhumans—thatgeneratesseismicwaves.Earthquakesarecausedmostlybyrupture(破裂,裂开)ofgeologicalfaults(断层),butalsobyvolcanicactivity,landslides,mineblasts,andnuclearexperiments。 Anearthquake'spointofinitialrup...
A fault refers to a fracture in the Earth's crust, and can either be active or inactive. This crack allows rocks to move, thus generating earthquakes. When we talk about faults, we'll also encounter the terms fault line and fault zone. A fault line is where two sides intersect along ...
Faults are cracks in the crust of the Earth where the earth is moving apart, coming together, or slipping past each other. Each of these movements on the surface of the earth cause earthquakes. Home near the epicenter of the 1989 Loma Prieta earthquake . USGS P waves & S waves P waves...
Are the Andes Mountains an example of fault-block mountains? Are the Alps an examples of fault-block mountains? What faults are at the Eurasian Plate boundaries? What is mountain building and what causes it? What plate boundaries create fold mountains? What causes earthquakes, volcanoes and mount...