The Science of Earthquakes A normal (dip-slip) fault is an inclined fracture where the rock mass above an inclined fault moves down (Public domain.) What is an earthquake? An earthquake is what happens when two blocks of the earth suddenly slip past one another. The surface where they slip is called the fault or fault plane. The location below the earth’s surface where the earthquake starts is called the hypocenter, and the location directly above it on the surface of the earth is called the epicenter.
tectonique des plaques at DuckDuckGo Ignore this box please. DuckDuckGo We don't track you. Plate tectonics - Simple English Wikipedia, the free encyclopedia The tectonic plates of the world were mapped in the second half of the 20th century. Tectonic plates on a different map projection Global plate tectonic movement global earth history This presentation uses a series of paleogeographic and plate-tectonic reconstructions to show the broad patterns of Phanerozoic Earth history. Organization is by region and in geologic order from oldest to youngest for each region. The Time Slice link shows all maps and globes of all regions by geologic time (the Periods). Menu
Layers Of The Earth: What Lies Beneath Earth's Crust The layers of Earth provide geologists and geophysicists clues to how Earth formed, the layers that make up other planetary bodies, the source of Earth's resources, and much more. Modern advances have allowed scientists to study what lies beneath our feet in more detail than ever before and yet there still remains significant gaps in our understanding. I hope this guide will walk you through the layers of the Earth, provide a general sense of our understanding and our current gaps. Keep in mind that this is an area of ongoing research and is likely to become more refined in the coming years and decades. L’étude des zones de convergence avec Tectoglob Travail réalisé par Jean-Christophe Bernard Objectif : Utiliser le logiciel Tectoglob pour mettre en évidence les mécanismes qui se produisent dans les zones de convergence des plaques. Lien avec le programme : L’activité interne du globe.
Earthquake - Simple English Wikipedia, the free encyclopedia Earthquakes are usually quite brief, but may repeat over a period of time. They are the result of a sudden release of energy in the Earth's crust. This creates seismic waves, which are waves of energy that travel through the Earth. What is Tectonic Shift? The Earth is in a constant state of change. Earth’s crust, called the lithosphere, consists of 15 to 20 moving tectonic plates. The plates can be thought of like pieces of a cracked shell that rest on the hot, molten rock of Earth’s mantle and fit snugly against one another.
Sciences de la vie et de la Terre Le Rallye Sciences 2015 Le Rallye se déroulera le mardi 27 janvier 2015 Thème choisi : La science en lumière -> Affiche -> Appel à candidatures