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Consider the following statements:
Assertion (A): Shallow-focus earthquakes occur along transform boundaries.
Reason (R): Transform faults are found where plates slide past one another.
In the context of the above, which of these is correct?
- a)A is correct, and R is an appropriate explanation of A.
- b)A is correct, but R is not an appropriate explanation of A.
- c)A is correct, but R is incorrect.
- d)Both A and R are incorrect.
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements: Assertion (A): Shallow-focus earth...
Assertion (A): Shallow-focus earthquakes occur along transform boundaries.
Reason (R): Transform faults are found where plates slide past one another.
The correct answer is option 'A' - A is correct, and R is an appropriate explanation of A.
Explanation:
- Shallow-Focus Earthquakes:
- Shallow-focus earthquakes are earthquakes that occur within the upper 70 kilometers of the Earth's surface.
- The focus refers to the location within the Earth where the seismic energy is released.
- Shallow-focus earthquakes are typically associated with tectonic plate boundaries.
- Transform Boundaries:
- Transform boundaries are areas where tectonic plates slide past one another horizontally.
- These boundaries are characterized by transform faults, which are large strike-slip faults that accommodate the horizontal movement of the plates.
- Transform boundaries are found along oceanic ridges, where they connect segments of spreading mid-ocean ridges, and on land where they form the boundaries between two plates.
- Relationship between Shallow-Focus Earthquakes and Transform Boundaries:
- Transform boundaries are associated with shallow-focus earthquakes because of the intense stress and friction generated by the sliding of the plates.
- As the plates slide past each other, they can become locked due to friction. When the stress along the fault exceeds the strength of the rocks, it is released in the form of an earthquake.
- The shallow-focus earthquakes along transform boundaries are often characterized by strong shaking and can cause significant damage in populated areas.
- Assertion and Reason:
- The assertion (A) states that shallow-focus earthquakes occur along transform boundaries, which is true.
- The reason (R) provides an appropriate explanation for this phenomenon by stating that transform faults are found where plates slide past one another.
- The sliding motion at transform boundaries generates stress and friction, leading to the occurrence of shallow-focus earthquakes.
- Conclusion:
- Based on the above explanation, it can be concluded that assertion (A) is correct, and reason (R) is an appropriate explanation of assertion (A).
- Therefore, the correct answer is option 'A'.
Reason (R): Transform faults are found where plates slide past one another.
The correct answer is option 'A' - A is correct, and R is an appropriate explanation of A.
Explanation:
- Shallow-Focus Earthquakes:
- Shallow-focus earthquakes are earthquakes that occur within the upper 70 kilometers of the Earth's surface.
- The focus refers to the location within the Earth where the seismic energy is released.
- Shallow-focus earthquakes are typically associated with tectonic plate boundaries.
- Transform Boundaries:
- Transform boundaries are areas where tectonic plates slide past one another horizontally.
- These boundaries are characterized by transform faults, which are large strike-slip faults that accommodate the horizontal movement of the plates.
- Transform boundaries are found along oceanic ridges, where they connect segments of spreading mid-ocean ridges, and on land where they form the boundaries between two plates.
- Relationship between Shallow-Focus Earthquakes and Transform Boundaries:
- Transform boundaries are associated with shallow-focus earthquakes because of the intense stress and friction generated by the sliding of the plates.
- As the plates slide past each other, they can become locked due to friction. When the stress along the fault exceeds the strength of the rocks, it is released in the form of an earthquake.
- The shallow-focus earthquakes along transform boundaries are often characterized by strong shaking and can cause significant damage in populated areas.
- Assertion and Reason:
- The assertion (A) states that shallow-focus earthquakes occur along transform boundaries, which is true.
- The reason (R) provides an appropriate explanation for this phenomenon by stating that transform faults are found where plates slide past one another.
- The sliding motion at transform boundaries generates stress and friction, leading to the occurrence of shallow-focus earthquakes.
- Conclusion:
- Based on the above explanation, it can be concluded that assertion (A) is correct, and reason (R) is an appropriate explanation of assertion (A).
- Therefore, the correct answer is option 'A'.
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Community Answer
Consider the following statements: Assertion (A): Shallow-focus earth...
- Most earthquakes occur at the boundaries where the plates meet. The locations of earthquakes and the kinds of ruptures they produce help scientists define the plate boundaries.
- There are three types of plate boundaries: spreading zones, transform faults and subduction zones. Transform Plate Boundaries are locations where two plates slide past one another. The fracture zone that forms a transform plate boundary is known as a transform fault. Most transform faults are found in the ocean basin and connect offsets in the mid-ocean ridges.
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Consider the following statements: Assertion (A): Shallow-focus earthquakes occur along transform boundaries.Reason (R): Transform faults are found where plates slide past one another.In the context of the above, which of these is correct? a) A is correct, and R is an appropriate explanation of A.b) A is correct, but R is not an appropriate explanation of A.c) A is correct, but R is incorrect.d) Both A and R are incorrect.Correct answer is option 'A'. Can you explain this answer?
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