Explore how small amounts of water can mobilize loose rock to form lahars by making a small lahar within the safety of a beaker or jar and analyzing it using scientific methods. By the end of the lesson, students will be able to answer the question: What are lahars and why are they the greatest volcanic hazard at Mount Rainier?
Recommended level: Middle School: Sixth Grade through Eighth Grade
1. Lahars: Volcanic Mudflows at Mount Rainier