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"Will the size of magnetism change?" Magnet PPT
Part 1: Measuring magnetism and collecting data
Is the magnetic force of a magnet constant? Can we change the magnetic force of this magnet?
If a magnet is attached to another magnet, will the magnetic force of the magnet change?
If the magnetic force changes, will it increase or decrease?
If we continue to attract the magnet, how will the magnetic force change?
How to compare the magnitude of magnetic force?
Notice:
1. The size of the magnetic force is expressed by the number of paper clips attracted by the magnet.
2. The magnetic force of several magnets should be the same.
3. The method of measuring magnetic force should remain the same.
Will the size of the magnetic force change? PPT, part 2: analyze the data and draw conclusions
What conclusions can you draw from analyzing the experimental data?
Two or more magnets are attracted together to increase the magnet's magnetic force.
Is the number of paper clips that are attracted more after each addition of magnets consistent with our initial expectations?
If you attach another ring magnet to a ring magnet, the magnetic force will increase a little, but not exponentially. If you continue to attract the magnet, the magnetic force will continue to increase, but the increase will decrease in sequence.
After-class exploration: When two mutually repelling magnets are combined together, how will the magnitude of the magnetic force change?
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