Do all earthquakes occur in earthquake zones?
439545
No, they can occur just about anywhere. They are most common in the seismically active areas, like tectonic lines, but they can also happen from other reason, like in the mountains if a piece of the rock would crumble and fall down, or if a meteor falls on earth, or if there is an underground cave or a river and it collapses... there are many reasons.
948942
Go to http://en.wikipedia.org/wiki/Earthquake#Size_and_frequency_of_occurrence for your answer.\n\nGood Luck!!!
1100253
Deep-focus earthquakes are associated with convergent plate boundaries (subduction zones).\n\nSee source.
941226
There are no earthquake-safe bridges or buildings. They  can be re-inforced to be earthquake resistant but when the 'big one' hits, they're all coming down. I'm talking about the 9.5 subduction zone quake that is due on the US west coast at any time.
872859
Most earthquake happens around the edge of the Pacific Ocean. Namely Japan, Alaska, California, etc. Its been called the Ring of Fire, because numerous volcano eruptions have been caused by earthquakes in these areas. The cause of the earthquake is due to the movement of 2 or more underground plates rubbing against each other either in a vertical or horizontal movement. Usually these movement goes smoothly without anyone noticing, but when a big shift - slippage occur we observe this as a major earthquake. Just like rubbing your hands together, most of the time it will go smoothly, but once in a while you will catch and cause a big jerk.
149677
Subduction zones occur where oceanic crust collides with continental crust.  Since oceanic crust has more density, it is always subducted underneath continental crust.
403621
In a nutshell, their is no way to predict earthquakes because there are little to no warnings signs. For example in California, This is a transform fault where two plates are sliding past each other... Eventually the stress builds up so much that it moves a lot at one time.. This is what causes Earth Quakes there, and when they happen they are devastating... We just cant tell when the stress is so much that an earthquake is going to happen.. It is not possible and probably will never be.
989327
Naturally occurring earthquakes\n\nMost naturally occurring earthquakes are related to the tectonic nature of the Earth. Such earthquakes are called tectonic earthquakes. The Earth's lithosphere is a patch work of plates (see plate tectonics) in slow but constant motion caused by the heat in the Earth's mantle and core. Plate boundaries glide past each other, creating frictional stress. When the frictional stress exceeds a critical value, called local strength, a sudden failure occurs. The boundary of tectonic plates along which failure occurs is called the fault plane. When the failure at the fault plane results in a violent displacement of the Earth's crust, the elastic strain energy is released and elastic waves are radiated, thus causing an earthquake. It is estimated that only 10 percent or less of an earthquake's total energy is ultimately radiated as seismic energy, while most of the earthquake's energy is used to power the earthquake fracture growth and is eventually converted into heat. Therefore, earthquakes lower the Earth's available potential energy and thermal energy, though these losses are negligible. To describe the physical process of occurrence of an earthquake, seismologists use the Elastic-rebound theory.\n\nThe majority of tectonic earthquakes originate at depths not exceeding a few tens of kilometers. Earthquakes occurring at boundaries of tectonic plates are called interplate earthquakes, while the less frequent events that occur in the interior of the lithospheric plates are called intraplate earthquakes.\n\nWhere the crust is thicker and colder, earthquakes occur at greater depths of hundreds of kilometers along subduction zones where plates descend into the Earth's mantle. These types of earthquakes are called deep focus earthquakes. They are possibly generated when subducted lithospheric material catastrophically undergoes a phase transition (e.g., olivine to spinel), releasing stored energy—such as elastic strain, chemical energy or gravitational energy—that cannot be supported at the pressures and temperatures present at such depths.\n\nEarthquakes may also occur in volcanic regions and are caused by the movement of magma in volcanoes. Such quakes can be an early warning of volcanic eruptions.\n\nA recently proposed theory suggests that some earthquakes may occur in a sort of earthquake storm, where one earthquake will trigger a series of earthquakes each triggered by the previous shifts on the fault lines, similar to aftershocks, but occurring years later, and with some of the later earthquakes as damaging as the early ones. Such a pattern was observed in the sequence of about a dozen earthquakes that struck the Anatolian Fault in Turkey in the 20th Century, the half dozen large earthquakes in New Madrid in 1811-1812, and has been inferred for older anomalous clusters of large earthquakes in the Middle East and in the Mojave Desert.\n\nInduced earthquakes\nSome earthquakes are the result of a number of anthropogenic sources, such as extraction of minerals and fossil fuel from the Earth's crust, the removal or injection of fluids into the crust, reservoir-induced seismicity, massive explosions, and collapse of large buildings. These seismic events caused by human activity are referred to by the term induced seismicity. They however are not strictly earthquakes and usually show a different seismogram than earthquakes that occur naturally.\n\nA rare few earthquakes have been associated with the build-up of large masses of water behind dams, such as the Kariba Dam in Zambia, Africa, and with the injection or extraction of fluids into the Earth's crust (e.g. at certain geothermal power plants and at the Rocky Mountain Arsenal). Such earthquakes occur because the strength of the Earth's crust can be modified by fluid pressure. Earthquakes have also been known to be caused by the removal of natural gas from subsurface deposits, for instance in the northern Net
1062718
Earthquakes happen every day around the world.  I'm sure there is a likely hood of an earthquake happening on June 20.  If someone is really into those predictions, they will re-interpretate the prediction after the fact to mean some other location or bla bla blah.
830892
There are literally hundreds of earthquakes every day.  Thankfully most are small.\n\nSome faults are well documented and a loose prediction that they will slip sometime in the near to middle future can be made but with very little accuracy.
189604
yes, exactly earth quakes repeated many times, so it is not sure when they repeat, and whts ur question exactly u wanna earthquake completely to the earth at the same time.?\ntil now it is not discovered and can not be detected when they wil occur to take precautions
305725
Yes, the seismic activity that causes one can also cause the other.  When the Earth's techtonic plates shift but experience some resistance, they shake, jump, rattle the area around that resistance.  Sometimes a crack in the Earth's crust is created or widened which creates the eventual environment for a volcano.  Othertimes volcanoes are created over a hot spot (thin crust) in the Earth's crust, like the Hawaiian islands.  This is somewhat different, although some tremors can be felt.
745553
Visit my slide show at URL\nhttp://asia.pg.photos.yahoo.com/ph/quake\nMost of the earthquakes occurs at tectonic plate boundaries.\nThis will occur when the accumulated stress (because of the movement of plates ) exceeds the bearable limit of the tectonic plates at that place.
1034765
It's impossible to say when an earthquake will strike, it's only possible to predict statistically when an earthquake might happen. However, this prediction will be so broad in real terms that it will have no value to anyone in terms of safety or doing anything pre-emptive.\n\n\nThe earthquake regions are however well known and follow the recognised earth's fault lines.\n\nIt will however give people some idea of the frequency or expectation of experiencing earthquakes in their own area and allow services to be put in place. The San Andreas fault is due to have another big one soon based on past patterns but the exact date cannot be predicted and I seem to remember reading that it's already late. Only when it's actually happened will it be possible to accurately predict when it was!
890167
volcanoes and earthquakes (faults)
655585
No,\nEarthquakes are caused by the movement of the tectonic plates making up the Earth's crust.  As they slide across eachother, they can cause Earthquakes, this is why areas which are "Earthquake prone" tend to lie along major fault lines.\n\nThe gravitational effects of other plants upon Earth are minimum at most.  Although according to Newton's law of universal gravitation, anything with mass in the universe is gravitationally attracted to anything else with mass in the universe, this attraction diminishes with the square of the distance.  Although massive by everyday standards, the other plants are just too small and too far away to have any significant impact on the Earth.
855026
Most earthquakes happen along the edge of the oceanic and continental plates. [Oceanic plates are under water, continental plates are above.] The earth's crust (the outer layer of the planet) is made up of a bunch of pieces, called plates. The plates get moved around by the liquid layers of magma underneath the Earth's crust. The plates are always bumping into each other, and pulling away from each other or past eachother. Earthquakes usually happen when two plates are running into each other or sliding past each other. They can also happen along faults, too though.