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- 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
- Rocky Mountains | Location, Map, History, Facts | Britannica
Rocky Mountains, mountain range forming the cordilleran backbone of the great upland system that dominates the western North American continent Generally, the ranges included in the Rockies stretch from northern Alberta and British Columbia southward to New Mexico, a distance of some 3,000 miles (4,800 km) In places the system is 300 or more miles wide
- Sedimentary rock | Definition, Formation, Examples, Characteristics . . .
Sediments and sedimentary rocks are confined to Earth’s crust, which is the thin, light outer solid skin of Earth ranging in thickness from 40–100 kilometres (25 to 62 miles) in the continental blocks to 4–10 kilometres in the ocean basins Igneous and metamorphic rocks constitute the bulk of the crust The total volume of sediment and sedimentary rocks can be either directly measured
- 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
- List of U. S. Cities | Britannica
Many Americans perceive social tension as the product of their society’s failure to extend the traditional dream of equality of opportunity to all people Ideally, social, political, economic, and religious freedom would assure the like treatment of everyone so that all could achieve goals in accord with their individual talents, if only they worked hard enough
- Claystone | Sedimentary Rock, Shale Mudstone | Britannica
claystone, hardened clay Some geologists further restrict the term to a sedimentary rock that is composed primarily of clay-sized particles (less than 1 256 millimetre in diameter) and is not laminated or easily split into thin layers; such rocks that show cleavage roughly parallel to the bedding plane often are classed as clay shales Claystones that are massive and blocky are sometimes
- Definition, Formation, Properties, Uses, Facts - Britannica
Clay, soil particles the diameters of which are less than 0 005 millimeter; also a rock that is composed essentially of clay particles Rock in this sense includes soils, ceramic clays, clay shales, mudstones, glacial clays, and deep-sea clays Clay materials are plastic when wet and coherent when dry
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