Question

Brent and Carry know that materials that conduct heat well tend to warm up quickly. They set up an experiment to compare how well four different materials conduct heat. They place a sample of each material on a hot plate and put a piece of wax on top, as shown below.

Brent predicts that sample 1 will heat up the fastest, causing its wax to melt first.

Which of the following is a different, reasonable prediction that Carry could make?

Answer 1

Answer: Sample 4 will heat up the fastest, causing its wax to melt first.

Explanation: Before conducting the experiment, Brent and Carry do not know which sample will conduct heat the best and warm up the fastest. They do know, however, that whichever sample heats up the fastest will melt its wax first.

Carry could predict that any of the four samples will heat up the fastest and cause its wax to melt first. So there are several predictions that she could make, including that sample 4 will heat up the fastest, causing its wax to melt first.

Answer 2

Sample 4 will heat up the fastest causing its wax to melt first (study island) (evaluating scientific investigations)