Tim and Dan should expect to measure simple evaporation to happen at the end of their experiment.
Answer:
Heat Energy...
Explanation:
As it is covered with the plastic wrap and inside is covered in Aluminium foil. The temperature on the inside will rise eventually as exposure to the sunlight. This is because of the better thermal conductivity of the aluminium. The thermometer in contact will eventually give a high temperature reading based to the time of exposure.
