What is one major effect of Earth's geologic plates?
Plate tectonics is the phenomenon of the Earth's plates moving at very slow rates over the ductile mantle. The movement of these plates destroyed the continents that used to cover the Earth and created the ones that are here now. The different directions that plates move relative to each other can create different geologic events along their boundaries, and these events are often the most violent and destructive on the planet.
Answer and Explanation:
Of the many effects that Earth's plate movements have, one major effect is the generation of earthquakes. Large-scale earthquakes are generated by violent and sudden movements between Earth's plates, since these are the only structures that have enough mass and momentum to generate enormous seismic waves.
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Learn more about this topic:
from Earth Science 101: Earth ScienceChapter 21 / Lesson 6