I just took a test in school today. What question was I asked?

Question I was asked: A geologist conducts an investigation to determine the absolute age of a fossil. She then repeats the procedure three times. Which best explains why she repeated the procedure several times?

I just took a test in school today. What question was I asked?

Question I was asked: As a sample of mercury changes state from liquid to solid, the atoms of the sample

I just took a test in school today. What question was I asked?

Question I was asked:
A small ice cube at a temperature of 0C is dropped into a glass of water at 28C and melts. What is the temperature of the water in the glass just after the ice cube melts?