This document provides summaries of different types of natural disasters: - Droughts occur in virtually all climates and are second only to hurricanes in economic impacts in the US. - Earthquakes can range from small to large, with large ones capable of destroying buildings and causing deaths and injuries. - Floods occur when a river or other body of water receives too much water, overflowing its normal path onto dry land in a flash or due to other events like tsunamis or large storms. - Tsunamis are generated by underwater disturbances like earthquakes, volcanic eruptions, explosions, landslides, meteor impacts that displace large volumes of water.