A student conducts an investigation to determine which magnet is strongest: the horseshoe, the bar, or the ring.
The student tests each magnet one time using the same metal object and announces that the bar magnet is
strongest.
What is wrong with the student's reasoning?
A scientist is unable to be certain of results without repeated investigations to test the reliability of the
results.
A scientist must always report the results of their investigations in a graph, instead of announcing the
results.
A bar, a ring, and a horseshoe magnet are unable to be tested against each other because they are
too different.
It is not necessary to test the strength of the magnets because they all have the same strength of
force.
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