Category: Education

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EARTHQUAKE What is earthquake? An earthquake is the result of a sudden release of energy in the Earth's crust that creates seismic waves. The seismicity or seismic activity of an area refers to the frequency, type and size of earthquakes experienced over a period of time. Earthquakes are measured with a seismometer; a device which also records is known as a seismograph. The moment magnitude of an earthquake is conventionally reported, with magnitude 3 or lower earthquakes being mostly imperceptible and magnitude 7 causing serious damage over large areas. Intensity of shaking is measured on the modified Mercalli scale. The depth of the earthquake also matters: the more shallow the earthquake, the more damage to structures. At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacing the ground. When a large earthquake epicenter is located offshore, the seabed sometimes suffers sufficient displacement to cause tsunami . The shaking in earthquakes can also trigger landslides and occasionally volcanic activity.

Things to do during earthquakes :

Things to do during earthquakes EARTHQUAKE > Know your local area, particularly if there is a history of earthquakes > Have an emergency kit on hand, including a battery operated radio, torch and spare batteries > Keep a list of emergency numbers handy > Identify a meeting place in case you become separated from loved ones If an earthquake strikes: > If indoors, stay there > Seek shelter under a door frame, table, or bench > If outdoors, keep well clear of buildings and other structures, power lines, trees etc > If in a vehicle, stop in an open area and listen to your car radio for advice > Do not use elevators or lifts STAY VIGILANT > Expect aftershocks > Keep your radio tuned to local media > Watch for hazards and check for injuries or damage > Turn off electricity, gas and water > Only use telephones in an emergency > Avoid driving unless for emergency > Stay calm and help others if possible

Things to do after Earthquake :

Things to do after Earthquake Listen to local radio Turn off electricity, gas, water Do not light matches Apply first aid if required Check for damage Check on your neighbors Expect aftershocks

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