Note that the magnetic anomalies form a striped

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weak magnetic field are unshaded.Note that the magnetic anomalies form a striped pattern on the map of Geoworld.Note also that the pattern in the Elrond Sea is symmetrical while that in the Aragorn Ocean isasymmetrical. This is because there is an active spreading ridge in the Elrond Sea but not in theAragorn Ocean. The center of symmetry in the Elrond Sea is right along the spreading ridge. *Permission is granted to reproduce this document for classroom use. Copies may not be distributed for profit. Please notify the author ([email protected]) that you are using this material and please describe where and how you are using it. Thank you!1Part 1: Analysis of the Present State of GeoworldElrond SeaAragorn Ocean 
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31.On the map on page 9, highlight the mid-ocean ridge in the Elrond Sea and label it the Hobbit Ridge. 2.Draw a diagram and explainthe origin of the striped magnetic anomaly pattern visible in the Elrond Sea. 3.The pattern of positive and negative magnetic anomalies in the Elrond Sea can be correlated with the pattern ofnormal and reversed magnetism on the magnetic polarity time scale. Based on this correlation, how manymillion years (m.y.) ago did sea floor spreading begin in the Elrond Sea?
4.Using the magnetic anomaly pattern in the Elrond sea, determine the 1/2-spreading rate on the Hobbit Ridge(i.e., determine how fast the Frodo continent is moving away from the Hobbit ridge). Give your answer in mm/y(millimeters per year).

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