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Project title How to build a homemade magnetometer to study how the earth's magnetic fields are affected by solar stormsFeatured science project
Difficulty Level High school
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Description
Solar storms can affect the Earth's magnetic field causing small changes in its direction at the surface which are called 'magnetic storms'. A magnetometer operates like a sensitive compass and senses these slight changes. The soda bottle magnetometer is a simple device that can be built for under $5.00 which will let students monitor these changes in the magnetic field that occur inside the classroom. When magnetic storms occur, you will see the direction that the magnet points change by several degrees within a few hours, and then return to its normal orientation pointing towards the magnetic north pole. Please refer to the attached primer Studying the magnetosphere in the Classroom for additional background information.  
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