Match the geological feature with its primary plate boundary type: 1. Mid-ocean ridge 2. Mariana Trench 3. San Andreas Fault

Correct — A. A mid-ocean ridge is where plates pull apart and new crust wells up: divergent.

The Mariana Trench is where the Pacific Plate sinks beneath the plate to its west: convergent, a subduction zone.

At the San Andreas Fault the Pacific and North American plates slide past each other, creating and destroying no crust: transform → option (a).

Why the others are wrong

• (b)
  1-Convergent 2-Divergent 3-Transform — It swaps the first two. A mid-ocean ridge is where plates separate (divergent), and a trench is where one plate dives under another (convergent).
• (c)
  1-Transform 2-Convergent 3-Divergent — It swaps the ridge and the fault. The San Andreas is a transform boundary, and a mid-ocean ridge is divergent.
• (d)
  1-Divergent 2-Transform 3-Convergent — It swaps the trench and the fault. The Mariana Trench is a subduction zone (convergent), and the San Andreas slides sideways (transform).

NCERT's Class 11 geography sorts plate boundaries by what happens to crust.

At divergent boundaries crust is created as plates spread apart; the Mid-Atlantic Ridge is the standard example.
At convergent boundaries crust is destroyed as one plate sinks under another, in a subduction zone.
At transform boundaries crust is neither created nor destroyed, as plates slide horizontally past each other.

Key facts

• The Mariana Trench holds the Challenger Deep, the deepest known point in the oceans.
• The San Andreas Fault in California marks the boundary between the Pacific and North American plates.
• Iceland sits on the Mid-Atlantic Ridge, a divergent boundary.

Common traps

• Reading 'trench' as a crack where plates split. A trench is where one plate descends under another, a convergent boundary.
• Calling the San Andreas convergent because it causes large earthquakes. Its plates slide sideways past each other.

No directly related past PYQ was found.