Rock | Definition, History, Artists, Songs, & Facts | Britannica
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. It originated in the United States and spread …
Rock | Definition, Characteristics, Formation, Cycle, Classification ...
Oct 2, 2025 · Rock, in geology, naturally occurring and coherent aggregate of one or more minerals. Such aggregates constitute the basic unit of which the solid Earth is composed and …
Rock and roll | History, Songs, Artists, & Facts | Britannica
Oct 11, 2025 · Rock and roll, style of popular music that originated in the United States in the mid-1950s and that evolved by the mid-1960s into the more encompassing international style …
Sedimentary rock | Definition, Formation, Examples,
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.
What is rock music? - Britannica
Rock music is a form of popular music that emerged in the 1950s and can be defined as “a form of music with a strong beat”—it is difficult to be much more precise. It is also called rock and roll.
The Myth of Sisyphus | Summary, Analysis, & Facts | Britannica
The Myth of Sisyphus, philosophical essay by Albert Camus, published in French in 1942 as Le Mythe de Sisyphe. Published in the same year as Camus’s similar novel L’Etranger (The …
Dome of the Rock | History, Architecture, & Significance | Britannica
The Dome of the Rock is a shrine in Jerusalem built in the late 7th century CE that is the oldest extant Islamic monument in the world, believed to be the site of Muhammad’s ascent to …
Rock Island | Mississippi River, Quad Cities, Fort Armstrong
Rock Island, city, seat (1833) of Rock Island county, northwestern Illinois, U.S. It lies on the Mississippi River (bridged to Iowa) at the mouth of the Rock River and opposite the island for …
Rock - Structure, Texture, Composition | Britannica
Oct 2, 2025 · Rock - Structure, Texture, Composition: Physical properties of rocks are of interest and utility in many fields of work, including geology, petrophysics, geophysics, materials …
Sigiriya | Rock Fortress, Ancient Palace, UNESCO Site | Britannica
Sigiriya, site in central Sri Lanka consisting of the ruins of an ancient stronghold that was built in the late 5th century ce on a remarkable monolithic rock pillar.