Question 3 options: 1. The Mercalli Scale is based on observable earthquake damage. It is relatively easy to acquire the necessary materials and build your own seismometer. They move in one direction. The primary goal of U.S. Geological Survey (USGS) Natural Hazards Response is to ensure that the disaster response community has access to timely, accurate, and relevant geospatial products, imagery, and services during and after an emergency event. The violent shaking of the ground produces the greatest property losses and personal injuries. Both arrive after P waves. The Richter scale was originally devised to measure the magnitude of earthquakes of moderate size (that is, magnitude 3 to magnitude 7) by assigning a number that would allow the size of one earthquake to be compared with another. You can specify conditions of storing and accessing cookies in your browser. Gamma rays are a kind of electromagnetic wave. How do identical twins (See the table of major earthquakes.). When tectonic plates move, it also causes movements at the faults. b. 2. Professor Emeritus of Earth and Planetary Science, University of California, Berkeley. Earthquake A has a Richter magnitude of 7 as compared with earthquake B's 6. CEA - Earthquake Damage, Danger & Destruction How does the duration affect the magnitude? They result from movement on Earths surface. . The result is called the moment magnitude. earthquake, any sudden shaking of the ground caused by the passage of seismic waves through Earths rocks. They are installed in the ground throughout the world and operated as part of a seismographic network. The shaking of the Earth's surface, taking place due to the sudden discharge of energy in the lithosphere of the Earth, which leads to formation of seismic waves is known as an earthquake. In order for an earthquake to occur, two blocks of crust must slip past one another, and it is impossible for this to happen at or above the surface of the earth. At this level doors would rattle, dishes break and weak or poor plaster would crack. re They travel the fastest through rocks. Create a meal from natural foods that The streams on one side of the fault have shifted in relation to the streams on the other side of the fault. They begin at epicenter where their magnitude is highest. plate This photograph shows the San Andreas Fault, a 750-mile-long fault in California. Credit: NASA-JPL/Caltech. Which statement describes the focus of an earthquake? The direction of the water flow in the streams has changed as a result of a change in the slope. Official websites use .gov A: They live in permanent villages. Intensity scales, like the Modified Mercalli Scale and the Rossi-Forel scale, measure the amount of shaking at a particular location. Earth's crust suddenly slips along a fault. - This scale produces a single rating for earthquakes that reach the surface. What was the duration of the earthquake? Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. 3. Which statement describes the moment magnitude scale?
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