Activity 01
Inquiry Circle: The Ripple Effect
Using long, shallow water trays, students create 'underwater earthquakes' by moving a submerged flap. They measure the height and speed of the wave at the 'deep' end versus the 'shallow' end (using a sand ramp) to see how the wave changes.
Explain how a distant underwater earthquake can generate a destructive wave thousands of kilometers away.
Facilitation TipDuring The Ripple Effect, have pairs mark two points on their tray with different water levels so they can measure how energy moves from one to the other.
What to look forProvide students with a diagram showing an underwater earthquake and a tsunami approaching a coastline. Ask them to label the points of energy transfer and explain in one sentence what happens to the wave's height as it reaches the shore.
AnalyzeEvaluateCreateSelf-ManagementSelf-Awareness
Generate Complete Lesson→· · ·
Activity 02
Peer Teaching: Warning Systems
Divide the class into 'experts' on different parts of a tsunami warning system (buoys, satellites, sirens, and community education). Experts then move to new groups to teach their peers how their specific part helps save lives.
Analyze the transformation of wave energy as it propagates from deep ocean to shallow coastlines.
Facilitation TipFor Warning Systems, assign each group one component (buoy, siren, evacuation sign) and ask them to prepare a 30-second teaching segment for the class.
What to look forAsk students to write down two key components of a tsunami early warning system and explain why each is important for saving lives.
UnderstandApplyAnalyzeCreateSelf-ManagementRelationship Skills
Generate Complete Lesson→· · ·
Activity 03
Simulation Game: Tsunami Time-Trial
Students use a map of the Indian Ocean and the speed of a tsunami (approx. 800km/h) to calculate how much time different coastal cities have to evacuate after an earthquake occurs near Sumatra.
Evaluate the physical principles behind early warning systems designed to mitigate tsunami impacts.
Facilitation TipIn Tsunami Time-Trial, pause the simulation after each run to let students sketch the wave height at 200 m and 10 m depths, labeling energy transfer points.
What to look forPose the question: 'If a tsunami warning is issued, what are three actions you or your family should take?' Facilitate a class discussion to ensure students understand evacuation procedures and safety measures.
ApplyAnalyzeEvaluateCreateSocial AwarenessDecision-Making
Generate Complete Lesson→A few notes on teaching this unit
Experienced teachers begin with a simple model—water in a tray or a clear tube—to show energy moving through a medium. They avoid overloading students with terminology at first, instead using everyday language like ‘push’ and ‘stretch’ to describe wave formation. Research shows that when students physically manipulate variables (depth, force, distance), they retain the concept better than when they only watch videos or read text.
By the end of these activities, students will explain how seismic energy becomes a tsunami, trace its path from deep ocean to shore, and identify key components of early warning systems. They will use evidence from simulations and discussions to challenge common myths about wave size and visibility.
Watch Out for These Misconceptions
During The Ripple Effect, watch for students who describe the wave as curling like a breaking surf wave. Redirect them by measuring the crest height at the tray’s edge and comparing it to the gentle rise in the center.
Show students that the wave in the tray rises evenly across the surface, not curling, and explain that this same gentle rise becomes a wall of water at the coast.
During Warning Systems, watch for students who think a distant tsunami looks like a visible wall on the horizon. Redirect them by replaying Tsunami Time-Trial footage to emphasize how fast the wave travels and how little time there is to react once it is visible.
Use the simulation to pause at 5-second intervals and ask students to calculate the wave’s speed in meters per second, reinforcing that by the time it is visible, it is often too late to evacuate.
Methods used in this brief