Cite Earth + PLANET EARTHHOW WAS EARTH FORMED? IS EARTH THE SAME ALL THE WAY THROUGH? HOW DOES EARTH SUPPORT LIFE? HOW DOES EARTH MOVE THROUGH SPACE? SEASONSFIND OUT MORE+ EARTH SCIENCESWHY IS EARTH SCIENCE USEFUL? HOW DO EARTH SCIENTISTS WORK? GEOLOGYFIND OUT MORE+ CONTINENTSHAVE EARTH’S CONTINENTS ALWAYS LOOKED THE SAME?WHY DO EARTH’S CONTINENTS MOVE? BIOGRAPHY: ALFRED LOTHAR WEGENER GERMAN, 1880–1930 TECTONIC PLATESFIND OUT MORE+ OCEANSOCEAN LIFE SUNLIT ZONE TWILIGHT ZONE DEEP-SEA ZONE WHY IS THE SEA SALTY? WHAT CAUSES THE OCEAN CURRENTS? OCEAN FLOORWAVESFIND OUT MORE+ ISLANDSWHAT IS A CONTINENTAL ISLAND? HOW ARE VOLCANIC ISLANDS FORMED? HOW DO CORAL REEFS FORM? FORMATION OF A CORAL ATOLLFIND OUT MORE+ EARTHQUAKESWHAT CAUSES EARTHQUAKES? WHAT HAPPENS DURING AN EARTHQUAKE? WHERE DO MOST EARTHQUAKES STRIKE? HOW ARE EARTHQUAKES MEASURED? FIND OUT MORE+ VOLCANOESHOW DOES A VOLCANO ERUPT? ARE ALL VOLCANOES DANGEROUS? LAVAFIND OUT MORE+ MOUNTAINSHOW ARE MOUNTAINS FORMED? ARE MOUNTAINS STILL GROWING? WHY ARE MANY MOUNTAINS SNOW-CAPPED? MOUNTAINS AT SEA RANGESFIND OUT MORE+ ROCKSTHE ROCK CYCLE WHAT ARE IGNEOUS ROCKS? WHAT ARE SEDIMENTARY ROCKS MADE OF? HOW ARE METAMORPHIC ROCKS CREATED? MINERALSCRYSTALSGEMSTONESFIND OUT MORE+ SOILHOW IS SOIL FORMED? ARE THERE DIFFERENT TYPES OF SOIL? HOW DO LIVING THINGS HELP THE SOIL?SOIL LAYERSFIND OUT MORE+ ATMOSPHEREDOES THE ATMOSPHERE REMAIN THE SAME FROM EARTH TO SPACE? WHAT IS ATMOSPHERIC PRESSURE? FIVE ATMOSPHERE LAYERSOZONE LAYERFIND OUT MORE+ WEATHERWHAT CAUSES THE WEATHER? FORECASTSFIND OUT MORE+ WINDSWHY DO WINDS BLOW? WHAT FORCES AFFECT THE WORLD’S WINDS? GLOBAL WINDS MONSOONSFIND OUT MORE+ RAINWHY DOES IT RAIN? DO SOME PARTS OF THE WORLD RECEIVE MORE RAIN THAN OTHERS? THE WATER CYCLECLOUDSSNOWHAILFIND OUT MORE+ STORMSWHAT CAUSES LIGHTNING? WHAT CAUSES THUNDER? HURRICANESFIND OUT MORE+ EROSIONHOW DOES EROSION HAPPEN? LANDSLIDESFIND OUT MORE+ RIVERSHOW DO RIVERS BEGIN? WHAT IS A RIVER’S LOAD? HOW DO RIVERS SHAPE THE LANDSCAPE? WHAT IS AN ESTUARY? HOW ARE DELTAS FORMED? LAKESFIND OUT MORE+ CAVESHOW ARE CAVES FORMED? FIND OUT MORE+ ICEHOW DO GLACIERS FORM? WHAT ARE ICE CAPS? ICEBERG FIND OUT MORE+ COASTSHOW DO WAVES CHANGE COASTAL LANDSCAPES? TIDESFIND OUT MORE+ ENERGY RESOURCESWHAT IS FUEL? FOSSIL FUELSNUCLEAR ENERGYRENEWABLE ENERGYFIND OUT MORE+ CLIMATEWHAT AFFECTS AN AREA’S CLIMATE? WHY DO TROPICAL REGIONS HAVE HOT CLIMATES? WHAT IS A CONTINENTAL CLIMATE? FIND OUT MORE+ CLIMATE ZONESCLIMATE 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 MORE+ HUMAN IMPACTHOW DOES FARMING CHANGE THE LANDSCAPE? HOW DOES INDUSTRY AFFECT THE LANDSCAPE? WHAT CHALLENGES FACE THE HUMAN POPULATION? POLLUTIONGLOBAL WARMINGFIND OUT MORE+ FARMINGWHICH KINDS OF ANIMALS ARE DOMESTICATED? HOW HAVE MODERN CROPS BEEN DEVELOPED? WHAT ARE STAPLE FOOD CROPS? WHERE IS RICE GROWN? MECHANIZED FARMING WHAT IS ORGANIC FARMING? FIND OUT MORE+ FISHINGWHAT IS OVERFISHING? WHAT METHODS ARE USED BY THE FISHING INDUSTRY? FIND OUT MORE+ FORESTRYWHAT ARE THE MAIN USES OF TIMBER? WHAT IS DEFORESTATION? FIND OUT MORE DK Earth: Planet Earth DK Space: Space Stations ✖
+ PLANET EARTHHOW WAS EARTH FORMED? IS EARTH THE SAME ALL THE WAY THROUGH? HOW DOES EARTH SUPPORT LIFE? HOW DOES EARTH MOVE THROUGH SPACE? SEASONSFIND OUT MORE+ EARTH SCIENCESWHY IS EARTH SCIENCE USEFUL? HOW DO EARTH SCIENTISTS WORK? GEOLOGYFIND OUT MORE+ CONTINENTSHAVE EARTH’S CONTINENTS ALWAYS LOOKED THE SAME?WHY DO EARTH’S CONTINENTS MOVE? BIOGRAPHY: ALFRED LOTHAR WEGENER GERMAN, 1880–1930 TECTONIC PLATESFIND OUT MORE+ OCEANSOCEAN LIFE SUNLIT ZONE TWILIGHT ZONE DEEP-SEA ZONE WHY IS THE SEA SALTY? WHAT CAUSES THE OCEAN CURRENTS? OCEAN FLOORWAVESFIND OUT MORE+ ISLANDSWHAT IS A CONTINENTAL ISLAND? HOW ARE VOLCANIC ISLANDS FORMED? HOW DO CORAL REEFS FORM? FORMATION OF A CORAL ATOLLFIND OUT MORE+ EARTHQUAKESWHAT CAUSES EARTHQUAKES? WHAT HAPPENS DURING AN EARTHQUAKE? WHERE DO MOST EARTHQUAKES STRIKE? HOW ARE EARTHQUAKES MEASURED? FIND OUT MORE+ VOLCANOESHOW DOES A VOLCANO ERUPT? ARE ALL VOLCANOES DANGEROUS? LAVAFIND OUT MORE+ MOUNTAINSHOW ARE MOUNTAINS FORMED? ARE MOUNTAINS STILL GROWING? WHY ARE MANY MOUNTAINS SNOW-CAPPED? MOUNTAINS AT SEA RANGESFIND OUT MORE+ ROCKSTHE ROCK CYCLE WHAT ARE IGNEOUS ROCKS? WHAT ARE SEDIMENTARY ROCKS MADE OF? HOW ARE METAMORPHIC ROCKS CREATED? MINERALSCRYSTALSGEMSTONESFIND OUT MORE+ SOILHOW IS SOIL FORMED? ARE THERE DIFFERENT TYPES OF SOIL? HOW DO LIVING THINGS HELP THE SOIL?SOIL LAYERSFIND OUT MORE+ ATMOSPHEREDOES THE ATMOSPHERE REMAIN THE SAME FROM EARTH TO SPACE? WHAT IS ATMOSPHERIC PRESSURE? FIVE ATMOSPHERE LAYERSOZONE LAYERFIND OUT MORE+ WEATHERWHAT CAUSES THE WEATHER? FORECASTSFIND OUT MORE+ WINDSWHY DO WINDS BLOW? WHAT FORCES AFFECT THE WORLD’S WINDS? GLOBAL WINDS MONSOONSFIND OUT MORE+ RAINWHY DOES IT RAIN? DO SOME PARTS OF THE WORLD RECEIVE MORE RAIN THAN OTHERS? THE WATER CYCLECLOUDSSNOWHAILFIND OUT MORE+ STORMSWHAT CAUSES LIGHTNING? WHAT CAUSES THUNDER? HURRICANESFIND OUT MORE+ EROSIONHOW DOES EROSION HAPPEN? LANDSLIDESFIND OUT MORE+ RIVERSHOW DO RIVERS BEGIN? WHAT IS A RIVER’S LOAD? HOW DO RIVERS SHAPE THE LANDSCAPE? WHAT IS AN ESTUARY? HOW ARE DELTAS FORMED? LAKESFIND OUT MORE+ CAVESHOW ARE CAVES FORMED? FIND OUT MORE+ ICEHOW DO GLACIERS FORM? WHAT ARE ICE CAPS? ICEBERG FIND OUT MORE+ COASTSHOW DO WAVES CHANGE COASTAL LANDSCAPES? TIDESFIND OUT MORE+ ENERGY RESOURCESWHAT IS FUEL? FOSSIL FUELSNUCLEAR ENERGYRENEWABLE ENERGYFIND OUT MORE+ CLIMATEWHAT AFFECTS AN AREA’S CLIMATE? WHY DO TROPICAL REGIONS HAVE HOT CLIMATES? WHAT IS A CONTINENTAL CLIMATE? FIND OUT MORE+ CLIMATE ZONESCLIMATE 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 MORE+ HUMAN IMPACTHOW DOES FARMING CHANGE THE LANDSCAPE? HOW DOES INDUSTRY AFFECT THE LANDSCAPE? WHAT CHALLENGES FACE THE HUMAN POPULATION? POLLUTIONGLOBAL WARMINGFIND OUT MORE+ FARMINGWHICH KINDS OF ANIMALS ARE DOMESTICATED? HOW HAVE MODERN CROPS BEEN DEVELOPED? WHAT ARE STAPLE FOOD CROPS? WHERE IS RICE GROWN? MECHANIZED FARMING WHAT IS ORGANIC FARMING? FIND OUT MORE+ FISHINGWHAT IS OVERFISHING? WHAT METHODS ARE USED BY THE FISHING INDUSTRY? FIND OUT MORE+ FORESTRYWHAT ARE THE MAIN USES OF TIMBER? WHAT IS DEFORESTATION? FIND OUT MORE DK Earth: Planet Earth DK Space: Space Stations
