The correct answer is 1-Divergent, 2-Convergent, 3-Transform. Explanation & Key Takeaways: • Mid-ocean ridge (Divergent Plate Boundary): • Mid-ocean ridges are geological features formed at divergent plate boundaries, where two tectonic plates move away from each other. • These boundaries are characterized by the upwelling of magma from the mantle, which solidifies to form new oceanic crust. • Examples include the Mid-Atlantic Ridge and the East Pacific Rise. • Hence, mid-ocean ridges correspond to divergent boundaries. • Mariana Trench (Convergent Plate Boundary): • The Mariana Trench is formed at a convergent plate boundary, where one tectonic plate subducts beneath another. • It represents the deepest part of the world's oceans, where the Pacific Plate subducts beneath the smaller Mariana Plate. • This subduction zone leads to the formation of deep oceanic trenches and associated volcanic activity. • Hence, the Mariana Trench corresponds to a convergent boundary. • San Andreas Fault (Transform Plate Boundary): • The San Andreas Fault is a classic example of a transform plate boundary, where two tectonic plates slide past each other horizontally. • This fault system is located in California, USA, and marks the boundary between the Pacific Plate and the North American Plate. • Transform boundaries are typically associated with shallow earthquakes and do not produce significant volcanic activity. • Hence, the San Andreas Fault corresponds to a transform boundary. Related Concepts: • Plate Boundaries: • Divergent Boundaries: These occur where tectonic plates move apart. They are found mainly along mid-ocean ridges, where new crust is created by magma upwelling. Example: Mid-Atlantic Ridge. • Convergent Boundaries: These occur where plates move toward each other, leading to subduction zones (oceanic-oceanic or oceanic-continental) or mountain formation (continental-continental). Example: Himalayas (continental-continental convergence) and Mariana Trench (oceanic-oceanic subduction). • Transform Boundaries: These occur where plates slide past one another. They are associated with fault lines and earthquakes. Example: San Andreas Fault. • Characteristics of Each Geological Feature: • Mid-ocean Ridge: Found in oceans, these are underwater mountain ranges formed by magma at divergent boundaries. They are sites of new crust formation. • Mariana Trench: Formed at a subduction zone, it is the deepest part of the ocean and a site of intense geological activity, including earthquakes and volcanic eruptions. • San Andreas Fault: A transform fault characterized by strike-slip movement and frequent earthquakes. It is not associated with volcanic activity but is a source of seismic hazards. Important Notes: • Mid-ocean Ridge: • Examples: Mid-Atlantic Ridge, East Pacific Rise. • Associated with processes like seafloor spreading and magma upwelling. • Mariana Trench: • Depth: 10,994 meters (Challenger Deep). • Formed by the subduction of the Pacific Plate beneath the Mariana Plate. • San Andreas Fault: • Length: 1,200 kilometers. • Location: California, USA. • Plates involved: Pacific Plate and North American Plate.