Question
2. Marlia picks up two things that have been sitting outside in the cold (5°C) for hours. One is a
jacket that someone left, and the other is a set of metal keys. Why do the keys feel cold, but the
jacket doesn't? (Hint: Use the terms "conduction" and "insulator" in your answer)
Answer
The keys feel cold because metal is a good conductor of heat, while the jacket is an insulator, meaning it does not conduct heat as well.