Earthquake
Earthquakes remind us that we are all moving on the surface of a restless planet. An earthquake is a natural phenomenon that occurs when the earth's crust moves, causing the ground to shake. It is a result of the release of energy that has been stored in the earth's crust. This energy is usually caused by the movement of tectonic plates, which are large slabs of rock that make up the earth's crust. Earthquakes can vary in size, intensity, and duration. The size of an earthquake is usually measured by its magnitude on the Richter scale, which is a logarithmic scale that ranges from 0 to 10. An earthquake with a magnitude of 5 or higher is considered to be significant, while an earthquake with a magnitude of 7 or higher is considered to be a major earthquake. The intensity of an earthquake is measured by the amount of shaking that is felt at a particular location. The duration of an earthquake refers to how long the shaking lasts. The effects of an earthquake can be devas...