Description: We want to assess what materials will be the greatest opinion for making a thermos sleeve. We try to cover a water bottle with a towel, styrofoam, newspapers, cardboard and bubble wrap respectively and compare them with a normal water bottle without any cover, also filled with hot water, in order to find out which thermos sleeve design can keep the water warm and slow down the time of getting water becomes cool. In this experiment, students can know what is energy lost. School: Hong Chi Morninghope School, Tuen Mun (Special School)
