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Earthquakes occur at
1. Divergent plate boundaries.
2. Ocean-ocean convergent plate boundaries.
3. Ocean-continent plate boundaries.
4. Transform boundaries.
Which of the above statements is/are correct?
- a)1, 3 and 4 only
- b)1, 2 and 4 only
- c)1 and 3 only
- d)All of the above
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
Earthquakes occur at 1. Divergent plate boundaries.2. Ocean-ocean con...
- The boundaries where the plates meet experience most earthquakes. Locations of earthquakes and the kinds of ruptures they produce serve as a great source of information to scientists to define the plate boundaries. The three types of plate boundaries are spreading zones, transform faults and subduction zones. At spreading zones, molten rock rises, which pushes two plates apart and adds new material at their corners.
- Divergent boundaries are those at which crustal plates move away from each other, such as at mid-oceanic ridges.
- The formation of a new ocean crust that is pushed away from both sides of the ridge fault creates a tension setting that results in the formation of the graben. Earthquakes arc located along the normal faults that form the sides of the rift or beneath the floor of the rift.
- Transform faults are found where plates slide past one another. Shallow-focus earthquakes occur along transform boundaries where two plates move past each other.
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Earthquakes occur at 1. Divergent plate boundaries.2. Ocean-ocean con...
Divergent Plate Boundaries
- Divergent plate boundaries occur where tectonic plates are moving away from each other.
- This movement creates a gap between the plates, known as a rift.
- As the plates separate, molten rock from the mantle rises to fill the gap, creating new crust.
- The process of new crust formation is known as seafloor spreading.
- Earthquakes can occur along divergent plate boundaries as the movement of the plates generates stress and strain on the rock, leading to fractures and faults.
Ocean-Ocean Convergent Plate Boundaries
- Ocean-ocean convergent plate boundaries occur where two oceanic plates collide.
- One plate is usually subducted beneath the other, forming a deep-sea trench.
- As the subducting plate sinks into the mantle, it can cause intense pressure and deformation in the surrounding rock.
- This can lead to the formation of earthquakes, particularly in the subduction zone where the plates are in direct contact.
Ocean-Continent Plate Boundaries
- Ocean-continent plate boundaries occur where an oceanic plate collides with a continental plate.
- The denser oceanic plate is usually subducted beneath the less dense continental plate.
- This subduction can cause significant deformation and uplift of the continental crust, leading to the formation of mountain ranges.
- Earthquakes can occur along ocean-continent plate boundaries, particularly in the subduction zone where the plates are in contact and the stress and strain on the rock are high.
Transform Boundaries
- Transform boundaries occur where two plates slide past each other horizontally.
- This movement can result in significant stress and strain on the rock, leading to fractures and faults.
- Earthquakes can occur along transform boundaries as the plates grind against each other.
- The San Andreas Fault in California is an example of a transform boundary where frequent earthquakes occur.
Conclusion
- All of the statements mentioned in the options (1, 2, 3, and 4) are correct.
- Earthquakes can occur at divergent plate boundaries, ocean-ocean convergent plate boundaries, ocean-continent plate boundaries, and transform boundaries.
- The movement and interaction of tectonic plates at these boundaries create stress and strain on the rock, resulting in seismic activity.
- Divergent plate boundaries occur where tectonic plates are moving away from each other.
- This movement creates a gap between the plates, known as a rift.
- As the plates separate, molten rock from the mantle rises to fill the gap, creating new crust.
- The process of new crust formation is known as seafloor spreading.
- Earthquakes can occur along divergent plate boundaries as the movement of the plates generates stress and strain on the rock, leading to fractures and faults.
Ocean-Ocean Convergent Plate Boundaries
- Ocean-ocean convergent plate boundaries occur where two oceanic plates collide.
- One plate is usually subducted beneath the other, forming a deep-sea trench.
- As the subducting plate sinks into the mantle, it can cause intense pressure and deformation in the surrounding rock.
- This can lead to the formation of earthquakes, particularly in the subduction zone where the plates are in direct contact.
Ocean-Continent Plate Boundaries
- Ocean-continent plate boundaries occur where an oceanic plate collides with a continental plate.
- The denser oceanic plate is usually subducted beneath the less dense continental plate.
- This subduction can cause significant deformation and uplift of the continental crust, leading to the formation of mountain ranges.
- Earthquakes can occur along ocean-continent plate boundaries, particularly in the subduction zone where the plates are in contact and the stress and strain on the rock are high.
Transform Boundaries
- Transform boundaries occur where two plates slide past each other horizontally.
- This movement can result in significant stress and strain on the rock, leading to fractures and faults.
- Earthquakes can occur along transform boundaries as the plates grind against each other.
- The San Andreas Fault in California is an example of a transform boundary where frequent earthquakes occur.
Conclusion
- All of the statements mentioned in the options (1, 2, 3, and 4) are correct.
- Earthquakes can occur at divergent plate boundaries, ocean-ocean convergent plate boundaries, ocean-continent plate boundaries, and transform boundaries.
- The movement and interaction of tectonic plates at these boundaries create stress and strain on the rock, resulting in seismic activity.
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Earthquakes occur at 1. Divergent plate boundaries.2. Ocean-ocean convergent plate boundaries.3. Ocean-continent plate boundaries.4. Transform boundaries.Which of the above statements is/are correct? a) 1, 3 and 4 onlyb) 1, 2 and 4 onlyc) 1 and 3 onlyd) All of the aboveCorrect answer is option 'D'. Can you explain this answer?
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