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Earthquakes take place in the Earth's tectonic plates, which are not thick enough to have earthquakes deeper than 20 km. Below the plates is the magma of the Earth's mantle, and being liquid, the magma does not experience quakes, just currents.

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Which depth range has the most earthquakes and the fewest earthquakes?

Most earthquakes occur at a depth of between 13-18 km. This is the Brittle-Ductile Transition zone and marks the strongest part of Earth's crust. The depth of the focus can be categorized as shallow, up to 70 km below the surface, or deep which is greater than 300 km. The fewest earthquakes have a depth range greater than 70 km.


A shallow earthquake occurs less than km below earth's surface?

Earthquakes occurring at a depth of less than 70 km are classified as 'shallow-focus' earthquakes, while those with a focal-depth between 70 and 300 km are commonly termed 'mid-focus' or 'intermediate-depth' earthquake.


Why is water greater at a greater depth than at a shallow depth?

Because of the weight of the water above.


Is 5.5 inches in depth greater than 5.375 inches in depth?

Yes


What is the focal depth of the Great Sumatra Andaman Earthquake?

The focal depth of an earthquake is how far beneath the earth's surface the hypo-center of the earthquake.Because of its location in the Indian Ocean, however, its focal depth is measured as 30 kilometers below mean sea level, rather than being measured at the seabed.


What is a large earthquake rated on the moment magnitude scale?

Earthquakes with a magnitude greater than or equal to 6 are termed strong earthquakes. 7 or larger are termed major earthquakes. Earthquakes greater than or equal to 8 are termed great earthquakes. The term "large" is not actually used.However based on the above it could be argued that any earthquake with a magnitude greater than 6 is a large earthquake.


What is the scale that rates earthquakes?

The Richter scale. For larger earthquakes (magnitude greater than 7) and for those with an epicentral distance greater than 700 km from the seismometer station, the Moment magnitude scale is used.


If an object is placed at a distance greater than twice the focal length of a convex lens what type of an image will be produced?

If an object is placed at a distance greater than twice the focal length of a convex lens, a real and inverted image will be produced. The image will also be smaller than the object.


Name and distribution of earthquake with regard to location and depth of focus?

Earthquakes that occur at depths less than 70 km are classified as shallow-focus earthquakes, while those between 70-300 km are called intermediate-focus earthquakes. Deep-focus earthquakes occur at depths greater than 300 km. The location and distribution of earthquakes are governed by the movement of tectonic plates along fault lines, with seismic activity concentrated at plate boundaries such as subduction zones and transform boundaries.


The depth of field in a photograph is controlled by the?

Depth of field on a camera is controlled by the aperture. The aperture is basically the size of the opening in the lens. A large aperture (or opening) creates a shallower depth of field and a small aperture creates a greater depth of field. Aperture, along with shutter speed, determine how much light goes into the camera. The size of the aperture is indicated by the f/stop number. The numbers usually range from about f/1 to around f/64. The smaller the number is, the larger the aperture is and the shallower the depth of field, meaning less space is in focus.Additional AnswerDepth of field is also affected by the focal length of your camera's lens. For any given aperture, longer focal length lenses (telephoto lenses) have a much narrower depth of field than a standard lens, and shorter focal length lenses (wide-angle lenses) have a much wider depth of field than a standard lens.


Why do earthquakes occur at depth less than 100 km?

Earthquakes occur primarily within the Earth's crust and upper mantle, which generally extends to a depth of about 100 km. This is due to the build-up of stress caused by the movement of tectonic plates at these shallow depths, leading to the sudden release of energy in the form of an earthquake. Deeper earthquakes at greater depths can also occur, but shallow earthquakes are more common due to the closer interaction of tectonic plates in the Earth's crust.


Which lens provides more magnification-a low power or a high power?

A lens of short focal length has a greater power (than a lens of large focal length)