Question

They all want to take water with them but want to make sure it stays cold as long as possible. They plan to freeze the bottles overnight but aren’t sure how to make them stay cold all day while on the trip. Using what you know about thermal energy transfer, design and construct a device that will keep their bottles cold all day.

Answer 1

You should create a device with walls that are of high insulation. This is important because it will prevent heat loss through the walls.