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    h2_yoho's Avatar
    h2_yoho Posts: 9, Reputation: 1
    New Member

    Oct 15, 2004, 08:21 PM
    Earths Crust
    Can anyone tell me the thickness, in miles, of the earths crust, and scale for scale, how thick would that leave the shell of a table tennis ball?
    Thank you.
    urmod4u's Avatar
    urmod4u Posts: 248, Reputation: 4
    Full Member

    Nov 11, 2004, 09:31 AM
    The oceanic crust avarages to 5 km.
    The continental crust avarages to 30-35 km, with a maximum of 100 km (Himalaya).
    Earth's radius is 6367 Km.
    The thickness of the layer on a table-tennis ball would then be 0.03 mm avarage for the oceanic crust and 0.2 mm avarage for the continental crust.

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