By American Geosciences Institute (AGI); Earth Science Week (ESW); United States Geological Survey (USGS)
One of the most frightening and destructive phenomena of nature is a severe earthquake and its terrible aftereffects. An earthquake is a sudden movement of the Earth, caused by the abrupt release of strain that has accumulated over a long time. For hundreds of millions of years, the forces of plate...
Grade Level 7 8 9 10 11 12
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