Which materials keep us warm? - Investigation instructions

Embarking on a scientific investigation, students are tasked with working in groups of four to explore the insulating properties of different materials. The aim is to determine which materials are most effective at retaining heat within a bottle full of hot water. To conduct this experiment, each group will require four identical bottles and a selection of four distinct types of materials, which they will choose through group discussion, considering the thermal properties of each. Additionally, a thermometer is necessary to accurately measure and compare the temperature of the water over time.

Before commencing the experiment, the group must engage in a critical discussion to establish the principles of a fair test. This ensures that the results obtained are reliable and can be attributed solely to the insulating effects of the materials being tested. The students will then ponder over the various materials that surround us in our daily lives, with a focus on identifying those that possess qualities conducive to warmth retention. The outcome of this practical investigation will not only reveal which materials are superior insulators but will also deepen the students' understanding of conducting scientific experiments and the concept of fair testing.