You cannot download interactives. A compass is a device that indicates direction. It is one of the most important instruments for navigation. Students create and observe ferrofluids to understand magnetic field lines and how they can affect planets. Students learn how the sun's activity and magnetism drive space weather and impact Earth's living and technological systems. Join our community of educators and receive the latest information on National Geographic's resources for you and your students.
Skip to content. Twitter Facebook Pinterest Google Classroom. Encyclopedic Entry Vocabulary. Geomagnetic Poles The Earth is a magnet. The iron in the sand is magnetic, strongly attracted to the magnet on an atomic level.
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Related Resources. View Article. Iron is the most common ferromagnetic element. Two other ferromagnetic elements are nickel and cobalt. However, several other substances can be ferromagnetic when they are heated or combined with other materials. A published author and professional speaker, David Weedmark was formerly a computer science instructor at Algonquin College.
He has a keen interest in science and technology and works as a technology consultant for small businesses and non-governmental organizations. A science fiction writer, David has also has written hundreds of articles on science and technology for newspapers, magazines and websites including Samsung, About. Why Does a Magnet Attract Iron? What Makes a Material Magnetic? Items That Repel Magnets. Hemoglobin molecules that contain iron tend to repel from the magnet when attached to oxygen.
In contrast, oxygen-depleted hemoglobin molecules are attracted slightly by magnets. A Youtube creator arranged an experiment regarding this explanation as well. Take a look at the real experiment! Hemoglobin in our blood is mostly attached to oxygen. So even if you put a strong magnet close to your body, you can see your body moving away rather than sticking to it. An MRI is a device that lets you see inside the body using powerful magnetic fields. Magnets seem to act something like positive and negative electric charges.
Electricity and magnetism are very closely related. If the words north and south remind you of anything, the earth is in fact a giant magnet. A compass is a tiny magnet balanced on a point so it can turn freely.
A good way to see how the magnet attracts is to do the following experiment. Take a strong bar magnet and putt a piece of pare over it. Then sprinkle some iron filings on the paper.
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