Extrusive igneous rocks are formed on the surface of the earth. These rocks are formed as a result of a volcanic eruption. Most have a fine grained texture made of small crystals due to rapid cooling. However, some of the lava cools so quickly that no crystals have time to form. An example of this type of rock is obsidian, commonly called black glass or volcanic glass.
Hurricane Sandy (unofficially known as Superstorm Sandy) was the deadliest and most destructive hurricane of the 2012 Atlantic hurricane season, and the second-costliest hurricane in United States history.
On October 29, 2012, Hurricane Sandy approached the densely populated U.S. East Coast. An estimated 60 million Americans were expected to be affected by rain, wind, snow, or ocean surges from the storm. The Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi NPP satellite acquired this natural-color image of Sandy at 1:35 p.m. Eastern Daylight Time (17:35 Universal Time) on October 29.