What Causes Earthquakes?
Earthquakes are caused by the sudden release of energy in the Earth's lithosphere that creates seismic waves. They can occur due to volcanic activity, tectonic movements, or even man-made events. Most earthquakes happen along fault lines where tectonic plates meet and move.
Seismic Waves and Their Impact
Seismic waves shake the ground and can cause buildings and other structures to collapse. The magnitude and intensity determine the level of destruction. Scientists use tools called seismographs to measure and analyze earthquake data.
Historical Earthquakes
Some of the most significant earthquakes in history include:
- Lisbon Earthquake of 1755
- The Great Kanto Earthquake in 1923
- Alaska Earthquake of 1964
- Indian Ocean Earthquake and Tsunami of 2004