- Rock - Social Change, Cultural Evolution, Music Revolution | Britannica
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 Yet, at the beginning of the 21st century, rock and the music industry faced a new crisis
- 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 to other English-speaking countries and across Europe in the 1960s
- 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…
- Rock - 1960s, British Invasion, Psychedelic | Britannica
The Beatles’ success suggested that it was possible to enjoy the commercial, mass-cultural power of rock and roll while remaining an artist The immediate consequence was folk rock Folk musicians, led by Bob Dylan, went electric, amplified their instruments, and sharpened their beat
- Rock - 80s, 90s, Pop | Britannica
Fifty years after rock’s birth as an alternative to mainstream pop, mainstream pop had become rock Whatever now happens to the music industry, it is certain that rock will remain the soundscape for most people’s lives
- List of Musical Bands | Rock, Pop, Grunge | 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
- sedimentary rock - Kids | Britannica Kids | Homework Help
Introduction Sedimentary rock is one of three types of rock found on Earth The others are called igneous and metamorphic Igneous and metamorphic rocks are the most common rock types in Earth’s crust Sedimentary rock is the most common rock type found at its surface
- metamorphic rock - Kids | Britannica Kids | Homework Help
Limestone is a sedimentary rock that can be metamorphosed, or changed, to make marble Limestone and marble are both formed from a chemical called calcium carbonate
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