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This is an activity about Earth's magnetic field. Learners will construct a soda bottle magnetometer, collect data, and analyze the results to detect magnetic storm events. Ideally, learners should collect data for at least a month. If several months are available for data collection, this is ideal. This is the first activity as part of the iMAGiNETICspace: Where Imagination, Magnetism, and Space Collide educator's guide. Instructions for downloading the iBook educator's guide and the associated Transmedia book student guide are available at the resource link.