In the activity Tsunamis, students will predict and observe the wave properties of a Tsunami.The content and activities in this resource will work towards building an understanding of the causes of tsunamis, natural hazards that can devastate low lying coastal areas. This lesson consists of four parts: A question set, two activities and further investigations. In order to complete the question set, students must utilize text, interpret diagrams and data tables. In the first activity: Sendai, Japan, which focuses on the Sendai Tsunami of 2011. It is important that the teacher familiarize themselves with the animation controls and for the students to practice with the animation controls and switching between the “Wave energy map” and the “Tsunami animation”. Students will record the data from the animations on the included data table along with any other observations, in the “observations” column of the data table.In the second activity: Tsunami Warning System Poster, students create a sign or a flyer and include important facts needed to educate people about Tsunami safety. The last section on further investigations lists additional research questions and goes into historical information about tsunamis and their causes. This lesson should take 3 hours; however, if the further investigations are included, an additional 2 hours may be needed to complete the work.