Your body goes through lots of changes after having your baby. These changes help your body recover from pregnancy and help you get ready to care for your new baby. Itâs normal to feel some discomfort, like soreness and fatigue, as your body heals after giving birth. However, other discomforts and health problems may be a sign that you need medical care.
A road broken by an earthquake. The definition of an earthquake is the release of sudden and extreme energy that is caused by shifting in the Earth's crust. Facts About Earthquakes. A seismometer is used to record and measure the strength of an earthquake. The Mercalli scale is used to measure the earthquake. Anything seven or above is considered extremely dangerous. Earthquakes usually occur along fault lines, or cracks that occur within the Earthâs crust.
Earthquake, shaking of the earth's surface caused by rapid movement of the earth's rocky outer layer. Earthquakes occur when energy stored within the earth, usually in the form of strain in rocks, suddenly releases. This energy is transmitted to the surface of the earth by earthquake waves.