Tufts OpenCourseware
Author: Fulcrum Institute Development Team

Why do things end up at room temperature?


1. Suppose you have an insulated container with 500 cc of water at 80° C and you stir into it cold water at 10° C. From the point of view of the moving molecules of water, why does the final temperature in the insulated container depend on how much cold water you add?

2. On a particle scale, the particles that comprise an object are always moving around. If two objects in contact with one another are at the same temperature, don't the particles of one transfer energy to the particles of the other? Explain your reasoning.

See Lesson 2: Challenge Solution document to view the solution.