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wave, in the earth sciences

(Encyclopedia)CE5 A. Diagram of wave: Wave travels one wavelength during one period B. Diagram of wave: Phase relationships wave, in oceanography, an oscillating movement up and down, of a body of water caused ...

hammerhead shark

(Encyclopedia)hammerhead shark, active, surface-living shark, genus Sphyrina. Its curious head has lateral projections resembling the crossbar of a T, and its eyes and ears are located in the outer tips of the proj...

gull

(Encyclopedia)gull, common name for an aquatic bird of the family Laridae, which also includes the tern and the jaeger. It is found near all oceans and many inland waters. Gulls are larger and bulkier than terns, a...

mir, former Russian peasant community

(Encyclopedia)mir mēr [key], former Russian peasant community. The mir, which antedated serfdom (16th cent.) in Russia, persisted in its primitive form until after the Russian Revolution of 1917. In a community of...

Moore, George

(Encyclopedia)Moore, George, 1852–1933, English author, b. Ireland. As a young man he lived in Paris, studying at various art schools. Inspired by Zola, Flaubert, Turgenev, and the 19th-century French realists, M...

Newton, John

(Encyclopedia)Newton, John, 1725–1807, English clergyman and hymn writer, b. London. Until 1755, his life was spent chiefly at sea, where he eventually became the captain of a slave ship plying the waters between...

needlefish

(Encyclopedia)needlefish, common name for members of the family Belonidae, which comprises species of elongated, surface-swimming predaceous fish abundant in warm seas. They have beaklike jaws armed with sharp teet...

Ontario, Lake

(Encyclopedia)Ontario, Lake, 7,540 sq mi (19,529 sq km), 193 mi (311 km) long and 53 mi (85 km) at its greatest width, between SE Ont., Canada, and NW N.Y.; smallest and lowest of the Great Lakes. It has a surface ...

parrotfish

(Encyclopedia)parrotfish, common name for a member of a large group of colorful reef fishes of warm seas, resembling the wrasses but of a larger size. Long considered a separate family, Scaridae, they are now group...

Pitcairn Island

(Encyclopedia)Pitcairn Island, volcanic island (2005 est. pop. 45), 2.5 sq mi (6.5 sq km), South Pacific, SE of Tuamotu Archipelago. Adamstown is the capital and only settlement. The first British Pacific Islands p...