We will use the following procedure to control for the amount of water used in each test well as for possible differences temperature of the water and the room: Start a timer and record the temperatur...We will use the following procedure to control for the amount of water used in each test well as for possible differences temperature of the water and the room: Start a timer and record the temperature of the room and the water simultaneously, leave the thermometers in place. Compared to the plastic cup, by what factor did changing to a foam cup increase the half-life of the temperature difference?