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DK Earth: Continents

HAVE EARTH’S CONTINENTS ALWAYS LOOKED THE SAME?WHY DO EARTH’S CONTINENTS MOVE? BIOGRAPHY: ALFRED LOTHAR WEGENER GERMAN, 1880–1930 TECTONIC PLATESFIND OUT MOREDry land covers just under one-third of…

DK Science: Islands

CONTINENTAL ISLANDSCORAL ISLANDSISLAND ARCSFIND OUT MOREIslands are land masses entirely surrounded by water. They are found in oceans, seas, rivers, and lakes. Islands vary in size from tiny…

DK Science: Rock Cycle

HOW ROCKS ARE FORMEDFIND OUT MOREThe rocks under our feet seem permanent, but they are constantly being changed. This process is called the rock cycle. Rocks exposed on the Earth’s surface…

DK Earth: Caves

HOW ARE CAVES FORMED? FIND OUT MORECaves are hollow spaces carved into hillsides or underground by the action of water and the wind. On coasts, pounding waves sometimes hollow out caves in the…

DK People & Places: Scandinavia & Iceland

NORWEGIAN FJORD WHERE DO MOST SCANDINAVIANS LIVE? WHY IS TIMBER SO IMPORTANT TO FINLAND? DO SCANDINAVIANS HAVE A GOOD STANDARD OF LIVING? DO SCANDINAVIANS PROTECT THE ENVIRONMENT? WHERE IS THE LAND…

Danakil

(Encyclopedia) Danakil, desert region, NE Ethiopia and neighboring portions of Djibouti and Eritrea, c.350 mi (560 km) long and 50–250 mi (80–400 km) wide, between the gulfs of Zula and Tadjoura. It…

volcano

(Encyclopedia) volcano, vents or fissures in the earth's crust through which gases, molten rock, or lava, and solid fragments are discharged. Their study is called volcanology. The term volcano is…

DK Science: Groundwater

EGYPTIAN OASISFIND OUT MOREGroundwater is water under the Earth’s surface. Most groundwater is found in porous rocks, which have tiny holes in them. If a hole is bored straight down through…

Vulcan, in Roman religion and mythology

(Encyclopedia) Vulcan, in Roman religion and mythology, fire god. Chiefly a god of destructive fire, Vulcan seems to have originated as a god of volcanoes. His festival, the Volcanalia, was held on…