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.
Many media outlets started calling it Superstorm Sandy after the storm made landfall, weakened and was downgraded from hurricane status. At one point, Sandy's hurricane-force winds (at least 74 mph) extended up to 175 miles (280 kilometers) from its center and tropical storm-force winds (39 mph) out to 485 miles (780 km). Even so, according to the NHC, Sandy was still only the second-largest Atlantic tropical cyclone on record.