- Rock - Social Change, Cultural Evolution, Music Revolution | Britannica
Rock - Social Change, Cultural Evolution, Music Revolution: How, then, should rock’s contribution to music history be judged? One way to answer this is to trace rock’s influences on other musics Another is to attempt a kind of cultural audit (What is the ratio of rock masterworks to rock dross?) But such approaches come up against the problem of definition
- rock - Kids | Britannica Kids | Homework Help
Rock, or stone, is a hard material made up of one or more minerals Rock makes up the outer layer of Earth, called the crust The lower parts of this layer are solid rock, or…
- Standing Rock protests | Summary, Violence, Outcome | Britannica
The Standing Rock protests were a campaign undertaken in North Dakota in 2016 and 2017 to halt the construction of the Dakota Access pipeline Early resistance to the pipeline was launched by members of the Standing Rock Sioux Tribe, but over time the demonstrations drew thousands of supporters from all across the United States
- Obsidian | Rock, Color, Composition, Uses | Britannica
Obsidian generally contains less than 1 percent water by weight Under high pressure at depth, rhyolitic lavas may contain up to 10 percent water, which helps to keep them fluid even at a low temperature Eruption to the surface, where pressure is low, permits rapid escape of this volatile water and increases the viscosity of the melt Increased viscosity impedes crystallization, and the lava
- Rock and roll | History, Songs, Artists, Facts | Britannica
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 known as rock music, though the latter also continued to be known as rock and roll Learn more about the history of rock and roll in this article
- Rock, Massachusetts, Colony, Map, History, Facts - Britannica
Plymouth, town (township), Plymouth county, southeastern Massachusetts, U S It lies on Plymouth Bay, 37 miles (60 km) southeast of Boston It was the site of the first permanent settlement by Europeans in New England, Plymouth colony, known formally as the colony of New Plymouth The town was founded by Pilgrims (Separatists from the Church of England) who, in their search for religious
- Rock - 1960s, British Invasion, Psychedelic | Britannica
Rock - 1960s, British Invasion, Psychedelic: Whatever the commercial forces at play (and despite the continuing industry belief that this was pop music as transitory novelty), it became clear that the most successful writers and producers of teenage music were themselves young and intrigued by musical hybridity and the technological possibilities of the recording studio In the early 1960s
- Rock - Structure, Texture, Composition | Britannica
Rock - Structure, Texture, Composition: Physical properties of rocks are of interest and utility in many fields of work, including geology, petrophysics, geophysics, materials science, geochemistry, and geotechnical engineering The scale of investigation ranges from the molecular and crystalline up to terrestrial studies of the Earth and other planetary bodies Geologists are interested in
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