GED Social Studies TestGeography and the WorldEasy
A geographer is analyzing a region where the Earth's crust is being pushed together, resulting in the formation of mountain ranges and deep ocean trenches. Which type of plate boundary is this geographer most likely studying?
- AConvergent plate boundary
- BConservative plate boundary
- CDivergent plate boundary
- DTransform plate boundary
Show answer & explanationAnswer & explanation
Correct answer: A. Convergent plate boundary
Convergent plate boundaries occur where two tectonic plates move towards each other, leading to collisions that form mountain ranges or subduction zones that create ocean trenches. The description directly matches the characteristics of a convergent boundary.
Why the other options are wrong
- B. Conservative boundaries are another name for transform boundaries, meaning plates slide past each other.
- C. Divergent boundaries involve plates moving apart, causing rift valleys and mid-ocean ridges.
- D. Transform boundaries involve plates sliding past each other horizontally, causing earthquakes but not mountain building or trenches.
Convergent Plate Boundary
A convergent plate boundary is an area where two or more tectonic plates move toward each other and collide.
- Results in mountain ranges when continental plates collide.
- Forms deep ocean trenches and volcanic arcs when oceanic and continental or two oceanic plates collide.
- Associated with significant seismic and volcanic activity.
Memory trick: Plates meet, world changes; some pull, some push, some slide.