Energy Detective 7A: A well-insulated house vs. a poorly-insulated house

You can select one of two houses, A and B, which have identical shape as shown in the model but different quality of construction. The yellow object in the middle of the house is a heater. Unlike the previous models, the temperature coloring is initially turned off. You may turn it on using the "Heat map" radio button if it helps your diagnosis.

Your task is to find which house requires higher power to heat. Try to maintain a temperature near the window at about 20°C. Note that the heater has two power levels and can also be turned off and on as the model runs. Turn on the graph to observe the temperatures recorded by the thermometers.

After you have completed your investigation, answer the questions in your workbook.