WELCOME

WELCOMESUBMITTED BY,BINDHU.S SOCIAL SCIENCE NO:16914351004STRUCTURE OF THE EARTHTHE EARTH CONSISTS OF THREE LAYERS:

CRUST MANTLE CORECRUSTIT IS THE OUTER MOST LAYER OF THE EARTHCONTINENTS AND OCEANS LIEIN THIS LAYERIT IS MADE UP OF ROCKSIT CONTAINS EVERYTHING THAT IS ESSENTIAL FOR LIFE

MANTLETHIS LAYER IS BELOWTHE CRUST.ITS UPPER PART IS MADE OF SOLID ROCKS,WHEREAS THE LOWER PART CONSISTS OF MOLTEN ROCKS.IT IS FROM HERE THE MAGMA(MOLTEN ROCK)COMES OUT WHEN A VOLCANO ERUPTS.IT CONTAINS A LOT OF IRON AND MAGNESIUM.COREIT FORMS THE CENTRE OF THE EARTH.THE OUTER CORE CONTAINS IRON AND NICKEL IN A MOLTEN STATE.SOME SULPHUR IS ALSO PRESENT.THE INNER CORE IS A SOILKD BALL ALMOST ENTIRELY MADE UP OF IRON.THANKYOU