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Earth's Systems and Layers

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    Earth's Systems
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  • What is the shape of the Earth?
    Sphere- shaped like a ball with all points on the surface equal distance from the center. Earth is not a perfect sphere. It is flattened at the poles.
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  • This layer of the Earth is the thinnest layer and is made of Silicon, Iron, Aluminum and Calcium.
    crust
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  • This layer of the Earth is solid and is made of iron and nickel.
    inner core
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  • This is the molten layer under the crust that is 2,900 km thick.
    Mantle
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  • The rigid layer of the crust that is made up of the plates.
    lithosphere
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  • The partially molten (magma) layer of the crust.
    asthenosphere
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  • This sphere includes all the air and gasses on and around the Earth.
    atmosphere
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  • The sphere that contains all of the water on Earth.
    Hydrosphere
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  • This sphere is made up of all life on Earth.
    Biosphere
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  • This sphere of Earth is made up of all the rocks, minerals, soil and landforms on Earth.
    geosphere
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  • The lowest layer of the atmosphere where weather occurs is called the
    troposphere
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  • Name the layers of the atmosphere in order from closest to the Earth to farthest.
    troposphere, stratosphere, mesosphere, thermosphere, exosphere
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  • What percentage of the Earth is covered in water
    70%
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  • What percentage of the water on Earth is saltwater?
    96%
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  • Which is the largest ocean?
    Pacific ocean
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  • What are the two types of crust?
    Oceanic crust and Continental Crust
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