Question

for an additional fifteen minutes. jen and ori record the temperature of each beaker at one - minute intervals. how could jen and ori have increased the reliability of their experiment? used smaller beakers so that their measurements would be more precise repeated the experiment multiple times to see if they obtained the same results let the beakers cool for 20 minutes instead of 15, so that they could gather more data used another heat source in addition to the hot plate to see if different sources of heat changed the amount

Explanation:

Repeating an experiment multiple times helps to identify and reduce random errors, thus increasing the reliability of the results. Gathering more data by increasing the cooling time (option C) mainly affects the amount of data rather than reliability. Using smaller beakers (option A) impacts precision not reliability. Adding another heat - source (option D) changes the experimental conditions rather than increasing reliability of the original experiment.

Answer:

B. repeated the experiment multiple times to see if they obtained the same results