How do archeologists use scientific analysis of artifacts to study life within the past? How can an object’s molecular composition illustrate larger themes such as trade and cultural interaction? Este plan de clase con actividades incluido también está disponible en español. Objective 1. Learn how and why archeologists use molecular analysis, specifically x-ray fluorescence (XRF), to learn more about ancient objects and people. 2. Understand the scientific process behind XRF and how archeologists interpret their results. 3. Gain knowledge of scientific principles such as atomic structure and b Duration: 60 Minutes.