A student uses a hot plate, a thermometer, and a stopwatch to investigate the rate at which a metal object conducts heat. The ensure the most reliable results, which of the following should the student do?

Question

Vocaloid · Answer

answer choices:

A Perform a second investigation using different tools
B Use several thermometers to measure temperature
C Develop a hypothesis before starting the investigation
D Repeat the entire investigation several Times

Vocaloid · Answer

thoughts about this one?

the point is to determine the rate at which that piece of metal conducts heat. introducing new thermometers/tools is actually a bad idea because you'd be introducing new variables, making the data less valid.

with that in mind, what do you think might be the best choice?