10 free HiSET practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
HiSET Practice Test 13Tutor mode
Question 1 of 10
Science
Students filled five identical metal cans with 200 mL of water at 80 °C. They left one can unwrapped and wrapped each of the others in a layer of a different material of the same thickness. They measured the water temperature in each can after 20 minutes.
Based on the graph, which material was the best insulator?