Geography · Secondary 3

Active learning ideas

Earthquake Causes and Measurement

Active learning helps students grasp dynamic geologic processes that are otherwise invisible. By manipulating models and data, students connect abstract concepts like energy release and wave propagation to concrete outcomes they can observe and measure.

• MOE Syllabus Outcomes
• MOE: Living with Tectonic Hazards - S3
• MOE: Earthquake Hazards - S3

• 25–40 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Plan-Do-Review
• 35 min · Small Groups

Model Building: Fault Line Simulation

Provide trays with jelly or dough to represent Earth's crust. Students cut faults, apply pressure to simulate plate movement, and observe 'earthquake' effects. Record wave-like ripples and measure 'displacement'. Discuss how this mirrors elastic rebound.

Explain the relationship between fault lines and earthquake occurrence.

Facilitation Tip

During the Fault Line Simulation, circulate to ensure students are applying consistent pressure and noting where the 'earthquake' releases energy.

What to look for

Provide students with a diagram of Earth's layers and a set of seismic wave types (P-wave, S-wave, Surface wave). Ask them to draw the path each wave type would take from the earthquake's focus to the surface and briefly describe how each wave moves.

• Remember
• Apply
• Analyze
• Self-Management
• Decision-Making
• Self-Awareness

Activity 02

• Plan-Do-Review
• 30 min · Pairs

Data Analysis: Scale Comparison

Distribute earthquake data tables with Richter and Mercalli values from past events. Pairs plot graphs comparing scales, identify patterns in damage vs magnitude. Share findings in class debrief.

Differentiate between the Richter and Mercalli scales for measuring earthquakes.

Facilitation Tip

For the Scale Comparison activity, provide calculators and pre-printed Richter scale charts so students focus on pattern recognition rather than computation.

What to look for

Pose the following question to small groups: 'If two earthquakes have the same magnitude on the Richter scale, why might they cause vastly different levels of damage in different cities?'. Students should discuss and present their reasoning, referencing both scales.

• Remember
• Apply
• Analyze
• Self-Management
• Decision-Making
• Self-Awareness

Activity 03

• Plan-Do-Review
• 25 min · Whole Class

Wave Demo: Seismic Wave Types

Use slinky toys or springs for P and S waves: compress for P, shake sideways for S. Whole class observes propagation speeds and effects on a model building. Note how waves refract through layers.

Analyze how seismic waves propagate through the Earth's interior.

Facilitation Tip

When demonstrating seismic waves with the slinky, ask students to verbalize the differences in movement before labeling the wave types.

What to look for

On a slip of paper, ask students to write down one key difference between the Richter and Mercalli scales. Then, have them describe a scenario where one scale would be more useful than the other for understanding an earthquake's impact.

• Remember
• Apply
• Analyze
• Self-Management
• Decision-Making
• Self-Awareness

Activity 04

• Plan-Do-Review
• 40 min · Small Groups

Seismograph Station: Hands-On Build

Groups construct simple seismographs with weights, strings, and paper rolls. Simulate quakes by shaking tables, record traces. Compare to real seismograms.

Explain the relationship between fault lines and earthquake occurrence.

Facilitation Tip

Have students test their seismographs on different table surfaces during the build to troubleshoot sensitivity issues before final testing.

What to look for

Provide students with a diagram of Earth's layers and a set of seismic wave types (P-wave, S-wave, Surface wave). Ask them to draw the path each wave type would take from the earthquake's focus to the surface and briefly describe how each wave moves.

• Remember
• Apply
• Analyze
• Self-Management
• Decision-Making
• Self-Awareness

A few notes on teaching this unit

Teach this topic through cycles of prediction, observation, and explanation. Start with students' prior knowledge about earthquakes, then use models to confront misconceptions. Avoid over-relying on diagrams; hands-on experiences help students internalize wave behavior and scale differences. Research shows concrete experiences improve retention of spatial and logarithmic concepts.

Students will explain how plate movements generate earthquakes and compare seismic waves and scales using evidence from models and data. They will also justify why some earthquakes cause more damage than others despite similar magnitudes.

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Watch Out for These Misconceptions

• During the Fault Line Simulation, watch for students attributing earthquakes to volcanic activity. Redirect by asking them to trace plate boundary maps and note that most earthquakes occur along faults far from volcanoes.

  During the Fault Line Simulation, ask students to observe where the 'earthquake' occurs on their model and compare this to a world map of plate boundaries. Have them identify nearby volcanoes versus fault lines to clarify the distinction.

• During the Scale Comparison activity, watch for students confusing Richter and Mercalli scales as measuring the same thing. Redirect by asking them to compare magnitude values and intensity descriptions side by side.

  During the Scale Comparison activity, provide a table with the same earthquake event listed under both scales. Ask students to compare the Richter magnitude value to the Mercalli intensity description to highlight that one measures energy, the other measures effects.

• During the Wave Demo: Seismic Wave Types, watch for students assuming all waves travel at identical speeds. Redirect by timing wave travel across the slinky with a stopwatch.

  During the Wave Demo: Seismic Wave Types, have students use a stopwatch to time how long each wave type takes to travel a fixed distance on the slinky. Ask them to explain why P waves arrive first at seismic stations based on their measurements.

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Methods used in this brief

• Plan-Do-Review