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HS-ENV03

How does salinity affect magnet strength?

Environmental Studies
Henry Gummerson

Grade:
10
Teacher:
Elyse Wexler

Pollution in our ocean is an increasing problem around the world, from plastic filling the oceans, to being able to access to clean water, but there is not a lot of discussion about metals polluting our waters. Many researchers have used magnets and displayed magnets universal use. My experiment was to determine whether salinity could affect a magnet's ability to attract an oxidated and non-oxidated nail. The purpose of this was to determine whether researchers can remove metals from the ocean to help recycle more. By testing a rusted and non-rusted nail, we can determine how we can recover metals that have been dumped recently or been in the water for years on end. A clear bucket was filled with water and salt was added to imitate 4 different types of oceans; The Dead Sea, Mediterranean Sea, Baltic Sea and the World Ocean, the control group was water without any salt. A cloth measuring tape was placed under the bucket to determine when the magnet attract the rusted/non-rusted nail. The rusted/non-rusted nail was placed in the bucket with a magnet, the magnet was pushed forward to record at what distance it would attract the rusted/non-rusted nail. The non-rusted nail had a greater distance of connection in all types of water tested compared to the rusted nail. With no current experiments known, future experiments in this field could allow scientist to discover a way to remove heavy metals, nails, screws, scrap metals and other objects from the water to give access to clean water to more around the world.


Project presentation

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Lab journal excerpts

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Research paper

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