Cambridge Secondary (7-9). Stage 9. MCE Science. Workbook - Unit 10: Transfer of Thermal Energy - Question 1

Three identical small plastic cups contain equal amounts of hot water, three-quarters full. One cup is wrapped in aluminium foil and insulating material, placed in a larger cup supported by sand, with extra insulation in the gap, a lid and plastic wrap sealing the larger cup. A second cup is uninsulated with a lid; the third is uninsulated without a lid. Thermometer bulbs dip fully into the water. The cups are kept in the same surroundings. Handle hot water carefully; an adult should prepare any holes with a knife cutter.



Measure and record the initial temperature of the hot water. Then use the same amount of hot water to fill the three small cups until they are three-quarters full.