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Turner Valley
(Encyclopedia)Turner Valley, village (1991 pop. 1,352), SW Alta., Canada, at the foot of the Rocky Mts., on the Sheep River, SW of Calgary. It is in the center of the Turner Valley oil and natural gas fields, opene...Wyoming Valley
(Encyclopedia)Wyoming Valley, c.20 mi (30 km) long and 3 to 4 mi (4.8–6.4 km) wide, in Luzerne co., NE Pa., through which flows the Susquehanna River. Wilkes-Barre is the major city of this once-rich anthracite c...Castro Valley
(Encyclopedia)Castro Valley, uninc. city (2020 pop. 66,441), Alameda co., W Calif., near San Francisco Bay. Chiefly residential, it also has light industries. ...Central Valley
(Encyclopedia)Central Valley, great trough of central Calif., c.450 mi (720 km) long and c.50 mi (80 km) wide, between the Sierra Nevada and the Coast Ranges. The Sacramento and San Joaquin rivers drain much of the...abrasive
(Encyclopedia)abrasive, material used to grind, smooth, cut, or polish another substance. Natural abrasives include sand, pumice, corundum, and ground quartz. Carborundum (silicon carbide) and alumina (aluminum oxi...grinding
(Encyclopedia)grinding, process by which surface material is removed from an object, usually metal, by the abrasive action of a rotating wheel or a moving belt that contains abrasive grains. A grinding wheel can be...bronze, in metallurgy
(Encyclopedia)bronze, in metallurgy, alloy of copper, tin, zinc, phosphorus, and sometimes small amounts of other elements. Bronzes are harder than brasses. Most are produced by melting the copper and adding the de...Glen Roy
(Encyclopedia)Glen Roy, valley, Highland, W Scotland, E of Loch Lochy. The Parallel Roads, three terraces on each side of the valley at corresponding heights, are believed to mark receding levels of a lake that onc...boron
(Encyclopedia)boron bōrˈŏn [key] [New Gr. from borax], chemical element; symbol B; at. no. 5; interval in which at. wt. ranges 10.806–10.821; m.p. about 2,300℃; sublimation point about 2,550℃; sp. gr. 2.3 ...Sacramento, river, United States
(Encyclopedia)Sacramento, longest river of Calif., c.380 mi (610 km) long, rising near Mt. Shasta, N Calif., and flowing generally SW to Suisun Bay, an arm of San Francisco Bay, where it forms a large delta with th...Browse by Subject
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