Eratosthenes determined the circumference of earth by conducting an
experiment. put his steps...
Eratosthenes determined the circumference of earth by conducting an
experiment. put his steps in order as they correlate to the scientific method.
conduct an experiment: measure the angle of a shadow at high noon
in syene and alexandria.
make observations: in syene, the sun's rays are vertical at noon. at
the same time in alexandria, the rays are 7.2 degrees from the
vertical.
t
make a hypothesis: if the sun casts shadows at different angles at
the same time of day in different places, we can determine how much
earth curves.
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