PPT-Earthquakes and Earthquake Prediction

Andrei Gabrielov Purdue University West Lafayette IN USA wwwmathpurdueeduagabriel San Francisco April 18 1906 Plate Tectonics Major tectonic plates and world seismicity Plate Tectonics. By. : 10 grade. What is an earthquake ?. Simply, earthquakes are the rumblings, shaking or rolling of the earth's surface. It is usually what happens when two blocks of the earth suddenly slip past one another, or break apart from each other as a result of tension caused by prolonged energy build up. . -Black. Shensi, China. When did this happen?. January 23, 1556. How many people died?. It is estimated that 830,000 people where killed in it.. The geological effects that were reported where ground fissures, uplift, subsidence, liquefaction, and landslides.. Why do people live in tectonic areas and how are the possible effects being managed?. Why do people live in tectonic areas?. In pairs discuss: . Which area of the world has the highest number of people potentially affected by tectonic activity?. They Shape Our Landscape. As plates move, we may feel these movements as earthquakes. If there were no plate motions, our planet would not look like home. There would be no mountains, no valleys, no plateaus . Why you need to prepare for the next earthquake . Alaska has more earthquakes than any other region of the U.S. . And in fact is one of the most seismically active area of the world.. Great earthquakes (Earthquakes larger than magnitude 8) rock the state on average every 13 years since the 1900. . earthquake. (also known as a . quake. , . tremor. or . temblor. ) is the result of a sudden release of energy in the . Earth's. . crust. that creates . seismic waves. . . The . seismicity. , . seismism. . What Is an Earthquake?. An . earthquake. is the vibration of Earth produced by the rapid release of energy. Energy released radiates in all directions from its source, the . focus. . Energy is in the form of waves. (Lesson 22). ENQUIRY QUESTION 3:. How successful is the . management. of tectonic hazards and disasters?. H/W :TASK 4. Read the information . (Hodder page 90 in this booklet) . about two recent tectonic mega disasters : . Content Purpose:. Explore the scientific theory of plate tectonics by describing how the movement of Earth's crustal plates causes both slow and rapid changes in Earth's surface, including volcanic eruptions, earthquakes, and mountain building. . Creation. Flood. Crucifixion. Los Angeles sinking. Sixth seal. 58-0927 - Why Are We Not A Denomination?. When He got it all made, it was just a great big volcanic eruption. . He let them old . volcanics. An earthquake is a motion of the ground surface.. According to A.N. . Strahler. and A.H. . Strahler. ,(1976), ‘An earthquake is a vibration or oscillation of the surface of the earth caused by a transient disturbance of the elastic or gravitational equilibrium of the rocks at or beneath the earth the surface’.. Earthquake is a shaking of the ground caused by the sudden breaking and shifting of large sections of Earth's rocky outer shell. Earthquakes are among the most powerful events on earth, and their results can be terrifying. A severe earthquake may release energy 10,000 times as great as that of the first atomic bomb. Rock movements during an earthquake can make rivers change their course. Earthquakes can trigger landslides that cause great damage and loss of life. Large earthquakes beneath the ocean can create a series of huge, destructive waves called tsunamis that flood coasts for many miles. . has not occurred in . either the San Francisco or the Los Angeles area for over 100 years.. An earthquake . of magnitude 7.0 or . greater has not occurred . in either the San Francisco or the Los Angeles area for over 100 years.. An . earthquake. is a sudden motion or trembling of the Earth caused by the abrupt release of energy that is stored in rocks. . Modern . geologists know that most earthquakes occur along plate boundaries, where huge tectonic plates separate, converge, or slip past one another.