Andrew arrived at school and went directly to his earth science class.
He took off his cap and coat and sat down at his desk. His teacher
gave him a large rock and asked him to find its density. Realizing that
the rock was too large to work with, Andrew got a hammer from the
supply cabinet and hit the rock several times until he broke off a chip
small enough to work with. He partly filled a graduated cylinder with
water and suspended the rock in the water. The water level rose
2 cm. Andrew committed this measurement to memory. He next
weighed the rock on a balance. The rock weighed 4 oz. Andrew
then calculated the density of the rock as follows: He divided 2 cm by
4 oz. He then reported to his teacher that the density of the rock was
0.5 cm/oz.

He was not wearing goggles when using the hammer.
He made the mistake in the unit for volume
Andrew should have recorded the data on paper
Weight is not measured on a balance.
oz is not an appropriate measurement in a science experiment as mass is measured in kg or g.
The mistake Andrew made was that he measured density as the ratio of volume to mass.

Density is the ratio of the mass of a substance to its volume.

Considering the procedure followed by Andrew:

The safety rule that he broke is that of not wearing goggles when using the hammer.

He made the mistake in the unit for volume

Andrew should have recorded the data on paper rather than committing it to memory.

The statement 'He next weighed the rock on a balance' is wrong because weight is not measured on a balance.

oz is not an appropriate measurement in a science experiment as mass is measured in kg or g.

The mistake Andrew made was that he measured density as the ratio of volume to mass.

In conclusion, the procedure followed by Andrew to measure the density of the rock was erroneous.

Learn more about density at: https://brainly.com/question/1354972

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