In this activity students will discover information about the four mass movement types: creeps, slides/falls, flows, slumps. They will discover the most costly and deadliest landslides in the USA. You can either print out copies for students or have them use Google Docs. Other words discussed are erosion, deposition, and lahar. Students will research what natural events and human events can trigger landslides. They will also research methods that humans are currently using to try and prevent mass movement.