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SCI 245 Earthquakes WK 3.

SCI 245 Earthquakes WK 3.

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Earthquakes 1

Earthquakes

Axia College

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Earthquakes 2

Earthquakes

Earthquakes are defined as a series of vibrations found in the earth’s crust including

rupture and the rebound of rocks. Some may define it as the Earth releasing stress, causing a

sudden movement of the crust. This “stress” may be caused by volcanoes or other geologic

faults. Shock waves are generated by the movement of rock masses deep within the crust of the

Earth, usually near tectonic plates, which are also common causes of earthquakes. A plate

margin is known as the meeting place of one plate with another plate. There are two different

types of plate margins, which are convergent margins and divergent margins. Convergent

margins are boundaries in which two plates move towards one another and come together

(Murck, Skinner, and Mackenzie 2008). This can lead to different types of margins, depending

on whether the boundary is between two oceanic plates, two continental plates, or one of each.

Divergent margins are the opposite, as they are boundaries along which two plates are moving

apart (Murck, et al. 2008). They are liable to occur in oceanic crust, as well as continental.

Earthquakes are found to be more common along these plate margins and are shown as the most

active plate margins. An earthquake may occur at either plate margin, and a volcano may be

found among both of the plate margins.

Quake and Shake

For the most part, earthquakes are found to be caused by the abrupt movement of the

Earth’s crust along a fault line (Murck, et al., 2008, p118). If the rocks were to slide past one

another causing a collision, catastrophic earthquakes such as the Sumatra-Andaman would not

take place. It is uncommon for rocks to avoid collision and slide easily past one another.

“Friction between blocks of rocks, cause them to tighten up and grab on to one another, bringing

the motion along the part of the fault to a complete stop” (Murck, et al., 2008. p118). When the

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Earthquakes Axia College Earthquakes Earthquakes are defined as a series of vibrations found in the earth's crust including rupture and the rebound of rocks. Some may define it as the Earth releasing stress, causing a sudden movement of the crust. This "stress" may be caused by volcanoes or other geologic faults. Shock waves are generated by the movement of rock masses deep within the crust of the Earth, usually near tectonic plates, which are also common causes of earthquakes. A plate margin is known as the meeting place of one plate with another plate. There are two different types of plate margins, which are convergent margins and divergent margins. Convergent margins are boundaries in which two plates move towards one another and come together (Murck, Skinner, and Mackenzie 2008). This can lead to different types of margins, depending on whether the boundary is between two oceanic plates, two continental plates, or one of each. Divergent margins are the opposite, as they are boundaries along which two plates are moving apart (Murck, et al. 2008). They are liable to occur in oceanic crust, as well as continental. Earthquakes are found to be more common along these plate margins and are shown as the most active plate margins. An earthquake may occur at either plate margin, and a volcano may be found among both of the plate margins. Quake and Shake For the most part, earthquakes are found to be ca ...
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