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Astronomy Science Fair Project

Magnetic Storms: A Homemade Magnetometer

Magnetic Storms: A Homemade Magnetometer | Science Fair Projects | STEM Projects
Have you ever wondered how the Earth's magnetic fields are affected by solar storms? With this project, you can build a magnetometer to monitor changes in the magnetic field and detect magnetic storms.


The hypothesis is that solar storms can affect the Earth's magnetic field, causing small changes in its direction at the surface.

Method & Materials

You will create a magnetometer to monitor changes in the Earth's magnetic field for signs of magnetic storms.
You will need a clean 2 liter soda bottle, 2 pounds of sand, 2 feet of sewing thread, a small bar magnet, a 3x5 index card, a 1 inch piece of soda straw, a mirrored dress sequin or small craft mirror, super glue, 2 inch clear packing tape, a meter stick, and an adjustable high intensity lamp with a clear bulb.


With this project, you can detect magnetic storms and measure the changes in the light spot position to detect magnetic storm events. You can even determine the direction of a car's motion by seeing if the spot initially moves east or west!

Why do this project?

This project is interesting and unique because it allows students to monitor changes in the magnetic field that occur inside the classroom. It is also a great way to learn about the effects of solar storms on the Earth's magnetic field.

Also Consider

Experiment variations to consider include measuring the magnetic activity from day to day by measuring the distance between the reference spot and the current spot, and measuring the magnetic activity from different geographic locations.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

Related video

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!
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