Rock | Definition, History, Artists, Songs, & Facts | Britannica
2024年12月9日 · rock, form of popular music that emerged in the 1950s.. It is certainly arguable that by the end of the 20th century rock was the world’s dominant form of popular music. Originating in the United States in the 1950s, it spread to other English-speaking countries and across Europe in the ’60s, and by the ’90s its impact was obvious globally (if in many different …
Rock | Definition, Characteristics, Formation, Cycle, Classification ...
2024年12月7日 · 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 typically form recognizable and mappable volumes. Rocks are commonly divided into three major classes according to the processes that resulted in their formation. These classes are (1) …
Fossil record | Definition & Facts | Britannica
fossil record, history of life as documented by fossils, the remains or imprints of organisms from earlier geological periods preserved in sedimentary rock.In a few cases the original substance of the hard parts of the organism is preserved, but more often the original components have been replaced by minerals deposited from water seeping through the rock.
New Hampshire | Capital, Population, Map, History, & Facts
2024年12月19日 · New Hampshire, constituent state of the United States of America.One of the 13 original U.S. states, it is located in New England at the extreme northeastern corner of the country. It is bounded to the north by the Canadian province of Quebec, to the east by Maine and a 16-mile (25-km) stretch of the Atlantic Ocean, to the south by Massachusetts, and to the …
Rock - Structure, Texture, Composition | Britannica
2024年12月7日 · 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. …
list of presidents of the United States - Encyclopedia Britannica
As the head of the government of the United States, the president is arguably the most powerful government official in the world. The president is elected to a four-year term via an electoral college system. Since the Twenty-second Amendment was adopted in 1951, the American presidency has been limited to a maximum of two terms.. Click on a president below to learn …
Rock and roll | History, Songs, Artists, & Facts | Britannica
2024年12月20日 · 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.
Dwayne Johnson | Biography, Wrestling, Films, & Facts | Britannica
6 天之前 · Dwayne Johnson (born May 2, 1972, Hayward, California, U.S.) is an American professional wrestler and actor whose charisma and athleticism made him a success in both fields. His popular films include several installments of The Fast and the Furious franchise, Tooth Fairy (2010), and Baywatch (2017). Wrestling. Johnson was born into a wrestling family.
What is rock music? | Britannica - Encyclopedia Britannica
What is rock music? 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 d
On This Day - What Happened Today In History | Britannica
Though the precise origin of the date is unclear, Christmas, commemorating the birth of Jesus Christ, is celebrated on this day, having been first identified as the date of Jesus' birth by Sextus Julius Africanus in 221. Explore how Christian and secular communities worldwide have embraced Christmas