A situation which poses immediate threat to our life and property is called an emergency. Wars and natural disasters may lead to an emergency buring such times, many people become homeless and lose their means of livelihood. They require immediatel help in terms in terms of food clothing medicines and shelter.   An act of nature which results in loss of life and property is called a natural disasters. Earthquake cyclones tsunamis and floods are some common natural disasters. The major types of disasters are explained below. When surface of  the earth trembles it is called an earthquake we can feel shocks of an earthquake. The shocks many be mild or severe. When a strong. Buildings can develop completely collapse. Many people are.injured and many of them die. Rescue teams try to reach quickly to the spot and start their rescue operations. They bring out the injured people from the debris and rush them to the hospital.