4 The Effect of Different Degrees or Thicknesses of Insulation
Materials
The same as those used in the experiment, section 1, with the addition of boxes of various sizes, some smaller, some larger, than the one used in the first experiment.
Pack the boxes with one or more of the various insulating materials used in the first experiment, so as to allow varying thicknesses of insulation around the cooker-pail. This should be the same or an exactly similar pail in each case. Fill the pail for all tests with an equal quantity of water, boil it for one minute, and leave it in the boxes for an equal length of time. Record the temperature maintained in each test. Keep the record in tabular form.
What thickness of insulation do you find gives the best result with the materials used in your experiment? Is it necessary to assume that the same thickness will be required with all insulating materials?