PPT-Seismic Waves Large strain energy released during an earthquake

travels as seismic waves in all directions through the Earths layers reflecting and refracting at each interface These waves are of two types body waves and surface waves the latter are restricted to near the. Mr. Altorfer. Science. EARTHQUAKES. Earthquakes. A. . . What are earthquakes?. 1. . . Earthquakes. are vibrations in the ground that result from movement along breaks in Earth's lithosphere.. 2. . The forces that move . 11/4/15. If you were a scientist, what would you do or look for to try and find out where the center of the earthquake was?. Objective . Tonight’s Homework. To learn how earthquakes move and how we locate them. Surveying: . Predicting . Earthquake. Hazard; Finding Geothermal Energy. John N. . Louie. Nevada . Seismological . Lab. oratory. Dept. of Geological Sciences & Engineering. www.seismo.unr.edu. Why do I care. Earthquake. – shaking and trebling that results from the movement of rock beneath Earth’s surface.. Plate movement causes earthquakes from stress and faults in Earth’s crust. When the rock breaks earthquakes happen. Part 3: Earthquakes.   . outline differences in P, S and L energy waves produced by an earthquake .   . identify energy transfers and transformations involved in L waves as they travel along the earth’s crust . Stage 1.. Magma rises to the crust within the mantle. This creates friction and causes the plates to move.. What are the 3 main ways plates move. 1.. 2.. 3. . Stage 2. Pressure builds between plates and sometimes small earthquakes are felt. . 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. Seismic . Waves. . are shock . waves . given off by earthquakes. . There are 2 types:. 1. . Body Waves. . originate from the . focus. (. F. ). travel . through. . the earth. . They’re used to locate . 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. . Part 1. Seismic Waves and Interior of the Earth. The behaviour of seismic waves in the different layers of the earth provides the most authentic evidence about the composition and structure of the earth. The different types of waves, generated during the occurrence of an earthquake, are generally divided into three broad categories: . For a quick laugh…. Geologists use 2 terms when discussing the location of an earthquake:. Focus. . = The area beneath Earth’s surface where the rock that is under stress actually breaks.. Epicenter. Seismic waves: terminology, classification, the transfer of energy, how waves move. Measuring earthquakes. Layers of the Earth and seismic waves. What information a seismologist is able to interpret from a seismogram. (Page 51). BEFORE, you learned. • Most earthquakes occur along tectonic plate boundaries . • Different directions of stress cause normal, reverse, and strike-slip faults. NOW, you will learn. • How energy from an earthquake travels through Earth . Kurdistan Region- Iraq. Ministry of Higher Education . & Scientific Research. . Salahaddin. University- Erbil. Geology - 3th Year. 2. nd. Semester . Jan. . 202. 1. Lec.1. 2. Seismic Method . (Applied Seismology).