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DK Earth: Ice

HOW DO GLACIERS FORM? WHAT ARE ICE CAPS? ICEBERG FIND OUT MOREAt the poles and on high mountains, vast areas are covered in ice—in rivers of ice called glaciers, and in layers of ice called ice…

DK Earth: Islands

WHAT IS A CONTINENTAL ISLAND? HOW ARE VOLCANIC ISLANDS FORMED? HOW DO CORAL REEFS FORM? FORMATION OF A CORAL ATOLLFIND OUT MOREAn island is an area of land smaller than a continent and entirely…

DK Earth: Mountains

HOW ARE MOUNTAINS FORMED? ARE MOUNTAINS STILL GROWING? WHY ARE MANY MOUNTAINS SNOW-CAPPED? MOUNTAINS AT SEA RANGESFIND OUT MOREA mountain is a steep-sided mass of rock, rising at least 2,000 ft (…

DK Earth: Oceans

OCEAN LIFE SUNLIT ZONE TWILIGHT ZONE DEEP-SEA ZONE WHY IS THE SEA SALTY? WHAT CAUSES THE OCEAN CURRENTS? OCEAN FLOORWAVESFIND OUT MOREEarth’s five oceans (the Pacific, Atlantic, Indian, Southern…

DK Earth: Atmosphere

DOES THE ATMOSPHERE REMAIN THE SAME FROM EARTH TO SPACE? WHAT IS ATMOSPHERIC PRESSURE? FIVE ATMOSPHERE LAYERSOZONE LAYERFIND OUT MOREMost life on Earth depends on the atmosphere, a bubble of gases…

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 Earth: Climate Zones

CLIMATE ZONE CLASSIFICATIONWHAT IS A MICROCLIMATE? HAS THE EARTH’S CLIMATE CHANGED OVER TIME? WILL EARTH’S CLIMATE CHANGE IN THE FUTURE? BIOGRAPHY: LOUIS AGASSIZ Swiss, 1807–1873FIND OUT MOREEarth…

DK Earth: Climate

WHAT AFFECTS AN AREA’S CLIMATE? WHY DO TROPICAL REGIONS HAVE HOT CLIMATES? WHAT IS A CONTINENTAL CLIMATE? FIND OUT MORE Every part of the world has its own climate—a characteristic…

DK Earth: Coasts

HOW DO WAVES CHANGE COASTAL LANDSCAPES? TIDESFIND OUT MORECoasts are border zones where the land meets the ocean. There is about 312,000 miles (502,000 km) of coastline worldwide. TIDES, waves,…

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…