- Rock climbing men. It originated in the United States and spread to other English-speaking countries and across Europe in the 1960s. The three major classes of rock are igneous, sedimentary, and metamorphic rock. Oct 2, 2025 · Rock, in geology, naturally occurring and coherent aggregate of one or more minerals. Folk musicians, led by Bob Dylan, went electric, amplified their instruments, and sharpened their beat. First, that rock is so broad a musical category that in practice people organize their tastes around more focused genre labels: the young Presley was a rockabilly, the Beatles a pop group, Dylan a folkie, Madonna a disco diva, Marley and the Wailers a reggae act, and Public Enemy rappers. The Beatles’ success suggested that it was possible to enjoy the commercial, mass-cultural power of rock and roll while remaining an artist. Rock - 80s, 90s, Pop: The music industry was rescued from its economic crisis by the development in the 1980s of a new technology, digital recording. Other successful rock singers, musicians, and groups include Eric Clapton, Jimi Hendrix, the Beatles, Tina Turner, Led Zeppelin, Courtney Love, Bob Dylan, and Patti Smith. Vinyl records were replaced by the compact disc (CD), a technological revolution that immediately had a conservative effect. Yet, at the beginning of the 21st century, rock and the music industry faced a new crisis. He was one of the first known Hollywood celebrities to die of AIDS-related complications. Rock is a form of popular music that emerged in the 1950s and that by the end of the 20th century was the world’s dominant form of popular music. Rock is a form of popular music that emerged in the 1950s and that by the end of the 20th century was the world’s dominant form of popular music. Such aggregates constitute the basic unit of which the solid Earth is composed and typically form recognizable and mappable volumes. Sep 10, 2025 · Sedimentary rock, rock formed at or near Earth’s surface by the accumulation and lithification of sediment or by the precipitation from solution at normal surface temperatures. Aug 19, 2025 · Rock - Electrical Properties: The electrical nature of a material is characterized by its conductivity (or, inversely, its resistivity) and its dielectric constant, and coefficients that indicate the rates of change of these with temperature, frequency at which measurement is made, and so on. Rock's origins lie in rock and roll, a new form of American popular music in the 1950s that was personified early on by Elvis Presley. Sep 28, 2025 · Rock Hudson, American actor noted for his good looks and movie roles during the 1950s and ’60s, including Magnificent Obsession, Giant, and Pillow Talk, and for the TV series MacMillan and Wife in the 1970s. Rock remains the most democratic of mass media—the only one in which voices from the margins of society can still be heard out loud. . The immediate consequence was folk rock. kp7fnjwx 56exwn sfci trnq ipu hhyd9yq qxrjzolr dztue6 3pax7g y2kaqt
