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Learn about the geophysics behind earthquakes, how they are measured, and where the most powerful earthquake ever witnessed occurred. To understand why earthquakes usually happen at plate boundaries. The surface where they slip is called the fault or fault plane. On average, 34,620 people died as a result of earthquakes, 10. This powerpoint on dipslip geologic faults is geared to any middle school or high school earth science or geology class. Intermediatefocus earthquakes are 70300 km deep, and deepfocus. The purpose of this powerpoint is to compare and contrast the differences between. Causes of earthquakes an earthquake is a shaking of the earths crust cause by a release of energy.
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