Polka dot rouge). Although the King of the Mountains was first recognised in the 1933 Tour de France, the distinctive jersey was not introduced until 1975. Much of the Japanese artist's Yayoi Kusama's work features a polka dot motif. The world's first crack pipe vending machines are polka dotted. There were many other "polka" items, some of which include "polka-hats" and "polka-jackets". Most disappeared with the fad of the actual polka dance. Only the polka dot fabric pattern remained popular, and the name has been left intact over the years. The polka dot also appears in popular music. "Itsy Bitsy Teenie Weenie
Types of volcanic eruptions Types of volcanic eruptions Several types of volcanic eruptions—during which lava, tephra (ash, lapilli, volcanic bombs and volcanic blocks), and assorted gases are expelled from a volcanic vent or fissure—have been distinguished by volcanologists. These are often named after famous volcanoes where that type of behavior has been observed. Some volcanoes may exhibit only one characteristic type of eruption during a period of activity, while others may display an entire sequence of types all in one eruptive series. There are three different types of eruptions. The most well-observed are magmatic eruptions, which involve the decompression of gas within magma that