The Earth
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Why are the terrestrial planets rocky?

The terrestrial planets are rocky because they are earth-like and are made up of rocks and metals and have relatively high densities.
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    Which one of the following has the longest duration ?
    • Eons
    • Period
    • Era
    • Epoch
    Answer
    Which one of the following figures represents the age of the earth ?
    • 4.6 million years
    • 13.7 billion years
    • 4.6 billion years
    • 13.7 trillion years
    Answer
    Which one of the following is not related to the formation or modification of the present atmosphere ?
    • Solar winds
    • Differentiation
    • Degassing
    • Photosynthesis
    Answer

    What is the basic difference in the arguments related to the origin of the earth given by :


    (a) Kant and Laplace

    (b) Chamberlain and Moulton?

    Answer
    First 1 2 Last
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