Science Olympiad Dynamic Planet Practice Test

Which of the following is NOT a characteristic of subduction zones?

1. High rates of volcanism

2. Mountain building

3. Flat topography

4. Earthquakes

The correct answer is: Flat topography

In the context of subduction zones, these geological features are characterized by the oceanic plate being forced under a continental plate or another oceanic plate, leading to significant geological activity. High rates of volcanism are commonly associated with subduction zones due to the melting of the subducted plate, which generates magma that rises to form volcanoes. Mountain building occurs in subduction zones as the intense pressure and friction from the collision of tectonic plates can result in the uplift of mountain ranges. Earthquakes are another defining characteristic, as the movement and interaction of the plates often lead to significant seismic activity. In contrast, flat topography is not associated with subduction zones. Instead, these regions typically exhibit dramatic elevations like volcanic arcs and mountain ranges due to the intense geological processes at play. Thus, flat topography is not a characteristic of subduction zones, making it the correct answer.