Laser Jet Toner: a Magnetic Fluid
Laser Jet Toner: a Magnetic Fluid
Grade Level: 7th to 9th; Type: Physical Science
Objective:
In this experiment, you will experience a magnetic fluid as it moves, bubbles, and forms unique shapes.
Research Questions:
- Why does the fluid contort into different shapes?
- Are there other fluids that are magnetic?
- What makes them magnetic?
Materials:
- Magnets of varying size and strength
- Laser jet toner (Ferro fluid)
- Beaker
- Pure vegetable oil
- Stirring stick
- Long, clear bottle, jar or flask
Experimental Procedure
- Pour 50mL of toner into the beaker.
- Pour in 30mL of pure vegetable oil.
- Stir it to a nice thin consistency. (If it is too thin, it might not work properly.)
- Pour the mixture into the long container.
- Touch a magnet to the container. Observe what happens to the fluid. (It should move with the magnet and contort into intriguing shapes.)
- Experiment with using other magnets. See what happens when you drop the magnets into the liquid.
Terms/Concepts: magnetism, magnetic fluid
References: Magnetism: http://www.factmonster.com/ce6/sci/A0831162.html
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