The Earth's Inner and Outer Structure
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The Earth's Inner and Outer Structure

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Created by María Jesús Campos, teacher of Social Studies, Geography and History in a bilingual section in Madrid

Created by María Jesús Campos, teacher of Social Studies, Geography and History in a bilingual section in Madrid

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    The Earth's Inner and Outer Structure The Earth's Inner and Outer Structure Presentation Transcript

    • María Jesús Camposlearningfromgeography.wikispaces.com
    • The Layers of the EarthThe Earh has three layers:  The crust: a solid outer part of the Earht’s surface. It represents around a 1% of the Earth.  The mantle: it is located under the crust. It represents an 84% of the Earth. It is formed by some solid materials but mainly by melted rocks that forms the magma.  The core: it is the inner part of the Earth. It represents a 15% of the Earth. It has two parts: the inner core which is extermely hot but solid as its materials are under high pressures and the outer core also very hot but formed by melted materials.
    • The Earth’s SurfaceTo make investigationseasier the surface of theEarth has been dividedup into four interconectedspheres:  Lithosphere  Hydrosphere  Atmosphere  Biosphere
    • LITHOSPHERE It comes from the ancient Greek “lithos”, stone, and “sphaira”, sphere. It refers to the rocky crust that covers the Earth.
    • HYDROSPHERE It comes from the ancient Greek “hydro” which means water and “sphaira” which means sphere. It refers to water on, under and over the surface of the Earth.
    • ATMOSPHERE It comes from the ancient Greek “atmo” which means air and “sphaira” which means sphere. It refers to the body of air which surrounds the Earth. These layers of gases are retained by the Earth’s gravity.
    • BIOSPHERE It comes from the ancient Greek “bio” which means life and “sphaira” which means sphere. It is formed by all living organisms: animals, plants and microbes. It is the global sum of the ecosystems. An ecosystem is a community of living organisms interacting with their environment (air, water, soil…)
    •  It is the branch of Geography that focuses on the study of the activities that take place in the lithosphere, the hydrosphere, the atmosphere and the biosphere of the Earth.
    • Developed by María Jesús CamposChusteacherWikiteacher