EARTH SCIENCE
EARTHQUAKES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
the sudden return of deformed rock traits undeformed shape
|
|
|
the gradual return of deformed rock to its undeformed shape
|
|
|
the sudden return of undeformed rock to its deformed shape
|
|
|
the gradual return of undeformed rock to its deformed shape
|
Detailed explanation-1: -Earthquakes are a result of elastic rebound. Elastic rebound is the sudden return of elastically deformed rock to its undeformed shape.
Detailed explanation-2: -Elastic rebound is what happens to the crustal material on either side of a fault during an earthquake. The idea is that a fault is stuck until the strain accumulated in the rock on either side of the fault has overcome the friction making it stick.
Detailed explanation-3: -Elastic rebound is the sudden return of elastically deformed rock to its undeformed shape. Elastic rebound occurs when more stress is applied to rock than the rock can withstand.
Detailed explanation-4: -Like the return of the broken rubber-band pieces to their unstretched shape, elastic rebound is the sudden return of elas-tically deformed rock to its original shape. Elastic rebound occurs when more stress is applied to rock than the rock can.
Detailed explanation-5: -A theory called the elastic rebound theory explains why an earthquake takes place. This theory basically states the a release of the stored strain in rocks cause movement along the fault. From there, tectonic forces act on a mass of rocks as they move pass each other. This makes the bending of the rock more severe.