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Seafloor Spreading Theory Video Lecture - IIT JAM Geology Crash Course
FAQs on Seafloor Spreading Theory
| 1. What is seafloor spreading? |  |
Ans. Seafloor spreading is a geological process where new oceanic crust is formed at mid-ocean ridges as tectonic plates move apart. This process is driven by volcanic activity, resulting in the creation of new material that pushes older crust away from the ridge.
| 2. How does seafloor spreading support the theory of plate tectonics? | |
Ans. Seafloor spreading provides evidence for plate tectonics by demonstrating how tectonic plates can move and interact. As new crust is created at mid-ocean ridges, it pushes existing plates laterally, which explains the movement of continents and the formation of ocean basins.
| 3. What are mid-ocean ridges, and what role do they play in seafloor spreading? | |
Ans. Mid-ocean ridges are underwater mountain ranges formed by tectonic activity. They are significant in seafloor spreading as they are the sites where new oceanic crust is generated, allowing for the continuous cycle of crust formation and movement of tectonic plates.
| 4. What evidence supports the existence of seafloor spreading? | |
Ans. Evidence for seafloor spreading includes the symmetrical pattern of magnetic stripes on either side of mid-ocean ridges, the age of oceanic crust being younger near the ridges and older further away, and the distribution of earthquakes and volcanic activity along these ridges.
| 5. How does seafloor spreading affect oceanic ecosystems? | |
Ans. Seafloor spreading can significantly impact oceanic ecosystems by creating new habitats through volcanic activity, such as hydrothermal vents. These vents provide unique environments that support diverse marine life, influencing biodiversity and ecological interactions in the ocean.
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Apr 20, 2026 Last updated
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Video Description: Seafloor Spreading Theory for Geology 2026 is part of IIT JAM Geology Crash Course preparation. The notes and questions for Seafloor Spreading Theory have been prepared according to the Geology exam syllabus. Information about Seafloor Spreading Theory covers all important topics for Geology 2026 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Seafloor Spreading Theory.
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