How much stronger is a magnitude 6 quake than a 3 quake?
336125
It is 1000 times stronger. The richter scale is an exponential scale. So from 1 to 2 is 10 times worse.
16160
its 1, 2, sqrt (3). i dont know what u mean by 6,6 over 3,12
1035781
Japan experiences an average of 3000 tremors a year. That's 10% of all the earth's measurable quakes, making them the most earthquake prone.  The pacific rim experiences 80% of the world's major earthquakes.  That includes the western coast of South, Central and contental North Americas the southern part of Alaska, across to Japan, then down to the Philippines, Papua New Guinea and New Zealand.\n\nIn 2005 there were 8 earthquakes 7.0 to 7.9, and one 8.7.  See link for other years.\n\nGood question!
544138
There are many factors that would determine whether your house would be knocked down by an earthquake or not.\n\nThe most obvious would be the size of the earthquake and your distance from the epicenter. The amount of destruction tends to drop off rapidly with distance from the epicenter.\n\nThe next factor would be what your house is made of.  Wood frame structures tend to stand earthquake stress more readily than a masonry (brick or concrete) building would because the joints between the wood can flex and return to their original form whereas bricks will break apart.  The age of the structure and any earthquake retrofitting will also be a factor.  In homes, one of the most common retrofits is to bolt the house to the concrete foundation so it won't slide off during a quake.\n\nThe third factor is the ground under your house.  There are certain soil types that can magnify the force of the earthquake.  An example of this is the Marina District in San Francisco.  It is largely built on top of debris from the 1906 quake.  During the Loma Prieta quake, the relatively loose rubble vibrated and shifted causing extensive damage to the buildings atop it.
255885
both ar eequally stronger
946669
Earthquakes 10.5 are impossibly big.  Places in America where you get earthquakes as big as 9 only happen along the coast of Alaska.  The biggest earthquake that can happen on the San Andreas is about 8.  Volcanoes in the US are only related to some faults, not all, and they are not interconnected, so one eruption is not related to nor does it cause another.\n\nHere are some basics on earthquakes/volcanism to help you with why this is physically impossible:\n\nEarthquakes: \nIt all comes down to stress and strain from the interaction of different plates, chiefly at the boundaries. It is not 'the plates rubbing together' as many people say; or at least that's a very simplistic view.\n\nPlate tectonics causes stress on the continents and oceans, all over the surface of the earth. In some places, the stress is very small (usually within the plates). Elsewhere, the stress is high, usually where the plates meet each other. Since each plate moves, when two come in contact, the stress each other. They can push on each other and cause compressional stress, they can pull with extensional stress, and they can slide past or shear each other with tensional stress.\n\nFaulting, causing earthquakes, comes from the fact that this stress is building up all the time, but rocks and continents are strong materials. Just like hitting a rock with a small hammer, you do put stress on it, but a small amount. It would take a sledgehammer to put enough strain (effects and accumulation of stress) to build up and cause breakage. In the earth, the area around an active fault builds up strain from the stress of plate tectonics. Most faults become locked, because of this strength, and thus can not release their strain. Away from the fault, the stress produces very small and slow movement of the rock masses as a whole. Eventually, the strain is too much and the rest of the plate has moved too far and the fault releases the strain build-up all at once in a big stress release called an earthquake. This is called the elastic rebound theory, and it explains most (but not all) movements.\n\nThis is why an earthquake's size is relative to the fault size. The bigger the fault, the bigger the strain build up, and the bigger the release in an earthquake. Subduction zones and collision zones, where large portions of plates actually can rub together as a whole, have the really big earthquakes, like the 2004 Sumatra earthquake. In other plate boundaries, the entire plate boundary does not act together, so the faults become spread out and many faults take up the strain from the tectonic stress, like with the San Andreas Fault in California (it only takes up ~3/4 of the stress between the plates).\n\nEarthquakes are really tricky things; there is still so much we need to learn. As of now, there is no way to predict them, but we can say where the danger is highest and about how long between events.\n\nVolcanoes:\nThere are several processes in Plate Tectonics that cause volcanism, but they result in two main types of volcanism.\n\nVolcanism in subduction is caused by volitals, like H2O, CO2. These are carried down by the plate, mainly in the form of weak minerals. These minerals break down with pressure and temperature into stronger minerals that don't contain water and carbon dioxide. The leftover gases and liquids travel into the mantle (the mantle wedge) and hydrate the mantle, causing melting. The melt rises and then... volcano!\n\nThe other main cause is from rising mantle material, which forms decompression melting. Basically, hot mantle is kept from melting by the pressure of the earth at depth. When this material rises, the pressure drops much faster than the temperature, and thus it partially melts. This mainly occurs at divergent boundaries and hot spots, which are areas in plate tectonics that have rising materials or spreading.
183464
The Richter scale measuring their intensity is a logarithmic scale.\n\nhttp://en.wikipedia.org/wiki/Richter_scale
596332
It is true that when asked for a sign that would mark his presence and the nearness of the conclusion of this system of things, Jesus gave one to his apostles.  But it should be remembered that the sign given by Christ in Matthew 24 and Luke 21 is a composite one made up of different facets.  The sign takes on significance, not when some facets are seen as isolated events in isolated areas, but when all facets are seen globally and within the same time frame. It may be likened to a finger print – unique in character.  One characteristic of the sign is earthquakes.  While it is certainly true that earthquakes have been occurring for millennia, in the context of the entire sign, something radically different occurred in the 20th century and is occurring here in the infancy of the 21st century.  So what about earthquakes, mentioned in Luke 21:10 and Matthew 24:7?\n\nThe U.S. Geological Survey (USGS) reported that  “2003 closed as the deadliest year for earthquakes since 1990, 25 times more fatal than 2002,” according to a press release from the agency. “In 2002, 1711 people died in quakes around the world,” while 43,819 perished last year. About 41,000 of those deaths occurred in Iran when a magnitude 6.6 earthquake hit the city of Bam on December 26. The most severe quake, and the only one to qualify as a “great” quake, was the one that struck Hokkaido, Japan, on September 25. It had a magnitude of 8.3. According to the report, “the USGS locates about 50 earthquakes each day. . . . On average, there are 18 major earthquakes (magnitude 7.0 to 7.9) and one great earthquake (8.0 or higher) each year worldwide. Several million earthquakes occur in the world each year, but many go undetected because they occur in remote areas or have very small magnitudes.”  \n\nCertainly many say that the number of earthquakes has not substantially increased in recent decades. In this regard, the U.S. National Earthquake Information Center reports that earthquakes of 7.0 magnitude and greater remained “fairly constant” throughout the 20th century.\n\nBut take another look at Jesus’ prophecy.  The fulfillment does not require an increase in the number of earthquakes or in their power. Jesus simply said there would be great earthquakes in one place after another.  Moreover, he said that these events would mark the beginning of pangs of distress.  Matthew 24:8  We do not measure distress by the number of earthquakes or how they rate on the Richter scale; we measure distress by the effect those earthquakes have on people.  Can anyone reasonably suggest that earthquakes have not caused great distress in our day?\n\nIt is noteworthy that when giving this prophecy, Jesus also said that, just as in the days of Noah before the flood, many would take no note, carrying on their lives as if nothing at all were different.  Matthew 24:39.  This failure to take note and keep on the watch would not only be a part of the sign itself, but ultimately, would cost them their lives.\n\nEarthquakes are but one facet of the sign. Taken by themselves, they mean little.  Taken as an integral part of the entire sign, they mean much.  We all do well to consider the sign in its entirety.
31025
September 2006 is still in the future, so that one will be very hard to explain, but there was a 7.6 magnitude quake in Pakistan on October 8, of 2005. This was a complex earthquake, with at least one more event occurring about 5 seconds after the initial onset. \n\nThe earthquake was produced by the northward movement of the India Plate relative to the Eurasian Plate. The rate of motion has been characterized as between 43 and 47 mm/year. There are complex vectors of convergence, divergence, and transform motion taking place in this region. The convergence is being expressed as crustal folding, uplift, thrust faulting and subduction. In the more immediate area around the epicenter of this quake the motion is convergent.\n\nTo see the seismic amplitude and the pattern of the event I suggest you examine these seismograms. You may note the way the event is 'compressed' in the stations nearer to the epicenter and 'spread' as they traveled further.\nHere is a relatively close seismic station at Diego Garcia:\nhttp://neic.usgs.gov/neis/seismogram/2005_10_08/DGAR.html\nHere are a couple of stations in Australia:\nhttp://neic.usgs.gov/neis/seismogram/2005_10_08/MBWA.html\nhttp://neic.usgs.gov/neis/seismogram/2005_10_08/NWAO.html\nHere is one in South Africa:\nhttp://neic.usgs.gov/neis/seismogram/2005_10_08/SUR.html\n \n\nThe epicenter of the quake was 34.493°N, 73.629°E, and the hypocenter was 26 km (16.2 miles) beneath the surface. Relative to the surrounding geography it was located:\n105 km (65 miles) NNE of ISLAMABAD, Pakistan\n115 km (70 miles) ESE of Mingaora, Pakistan\n125 km (75 miles) WNW of Srinagar, Kashmir\n165 km (105 miles) SSW of Gilgit, Kashmir\n\nA map of P-wave travel times can be examined here:\nhttp://neic.usgs.gov/neis/eq_depot/2005/eq_051008_dyae/neic_dyae_t.html\nA total of 280 seismic stations reported this quake and all 280 were included in the calculations of the location and depth. The estimated energy dissapated in the quake was 3.1 x 10^15 Newton meters. \n\nThe earthquake was preceeded by a Magnitude 5.5 on July 23, 2005, a 5.5 on July 15, '05, and a 5.5 on July 1, '05. There have been dozens, if not hundreds of aftershocks, including at least 19 earthquakes in the region that were magnitude 5.0 and higher. On December 12, 2005 a Magnitude 6.7 earthquake occurred in the Hindu Kush region of Afghanistan about 235 km from the epicenter of the 10/8/05 quake. \n\nHere is the main USGS page for that 10/8 earthquake:\nhttp://earthquake.usgs.gov/eqcenter/eqinthenews/2005/usdyae/
890603
a difference in 0.1 on the richter scale will mean 100% increase in amplitude of shaking and about 3.1 times the energy.
607630
yea.. it's Helicorder Images, a way to record the earthquake in a given area.. even it is minimum. for reading of this, you need to do a bit study. surf the net, also go here:
502327
There was one yesterday on Leyte Philippines bad enough to wipe out the electricity for 75% of the Visayas, we lost power for a total of five hours.\nAt present there are conflicting reports as to it's strength, and the major earthquake reporting site hasn't recorded it.\nNow if we are talking big as in really big say a Nine or nearly, there are many places overdue an earthquake. So my answer would be very, very soon.
274866
this site is the best\nhttp://earthquake.usgs.gov/learning/
55918
An earthquake is the shaking of the ground caused by an abrupt shift of rock along a fracture in the Earth, called a fault. Within seconds, an earthquake releases stress that has slowly accumulated within the rock, sometimes over hundreds of years. ... \nThe size of an earthquake is indicated by a number called its magnitude. Magnitude is calculated from a measurement of either the amplitude or the duration of specific types of recorded seismic waves. Magnitude is determined from measurements made from seismograms and not on reports of shaking or interpretations of building damage. ... The intensity of and earthquake is a measure of the amount of ground shaking at a particular site, and it is determined from reports of human reaction to shaking, damage done to structures, and other effects. ... \n\nEarth scientists believe that most earthquakes are caused by slow movements inside the Earth that push against the Earth's brittle, relatively thin outer layer, causing the rocks to break suddenly. This outer layer is fragmented into a number of pieces, called plates. Most earthquakes occur at the boundaries of these plates. In Washington State, the small Juan de Fuca plate off the coast of Washington, Oregon, and northern California is slowly moving eastward beneath a much larger plate that includes both the North American continent the land beneath part of the Atlantic Ocean. Plate motions in the Pacific Northwest result in shallow earthquakes widely distributed over Washington and deep earthquakes in the western parts of Washington and Oregon. The movement of the Juan de Fuca plate beneath the North America plate is in many respects similar to the movements of plates in South America, Mexico, Japan, and Alaska, where the world's largest earthquakes occur. ...
746545
There are earthquakes all the time.  Do you mean a destructive one?  That would be the quake that interrupted a game during the 1989 World Series when the Giants were playing at home.  Do you mean one some people just barely felt or noticed?  Earlier this month.  Do you mean one detected only by seismograph?  Probably within the last fifteen minutes.\nThe San Andreas fault runs right through San Francisco Bay, and there are plenty of other active faults in the area.
234732
X times Y^Z\nexample\n1 x 10^8.3 = magnitude 8.3 quake
1144646
Stronger in terms of physical power:\n\n\nS P I D E R M A N