Earthquakes: Causes and Measurement

Active learning engages students physically and cognitively with the forces behind earthquakes, making abstract concepts like seismic waves and fault mechanics tangible. By modeling real-world processes, students move beyond memorization to explain why and how earthquakes occur and their impacts on communities.

• Year 10
• Geography
• 3 activities
• 20 min–50 min

Learning Objectives

1. Explain the primary mechanisms that generate seismic waves at fault lines.
2. Compare and contrast the Richter and Mercalli scales, analyzing their strengths and weaknesses in measuring earthquake impact.
3. Analyze the spatial relationship between major fault lines and the historical occurrence of significant earthquakes.
4. Calculate earthquake magnitude using seismograph data, demonstrating an understanding of wave amplitude and distance.

Mock Trial

⏱ 50 min·Whole Class

Mock Trial: The Flooding Blame Game

Following a simulated flood event, students take on roles such as the Environment Agency, local farmers, property developers, and residents. They must argue who is responsible for the damage and who should pay for future defenses.

Prepare & details

Explain how seismic waves are generated and measured during an earthquake.

Facilitation Tip: For the Mock Trial, assign roles clearly and provide a simple evidence sheet so students focus on applying geological knowledge rather than debating personalities.

Setup: Desks rearranged into courtroom layout

Materials: Role cards, Evidence packets, Verdict form for jury

• Analyze
• Evaluate
• Create
• Decision-Making
• Social Awareness

Think-Pair-Share

⏱ 20 min·Pairs

Think-Pair-Share: Social Media vs. Official Warnings

Students compare a Met Office weather warning with a viral social media post about an upcoming 'weather bomb.' They discuss the dangers of misinformation and how to communicate risk effectively to different age groups.

Prepare & details

Compare the Richter and Mercalli scales for measuring earthquake intensity.

Facilitation Tip: During Think-Pair-Share, model how to distinguish between emotional social media posts and factual official warnings by sharing a real example of each before students begin.

Setup: Standard classroom seating; students turn to a neighbor

Materials: Discussion prompt (projected or printed), Optional: recording sheet for pairs

• Understand
• Apply
• Analyze
• Self-Awareness
• Relationship Skills

Inquiry Circle

⏱ 40 min·Small Groups

Inquiry Circle: UK Weather Records

Groups are given data sets of UK temperature and rainfall from the last 100 years. They must identify trends and 'extreme' outliers, then link these outliers to specific historical weather events they have studied.

Prepare & details

Analyze the relationship between fault lines and earthquake occurrence.

Facilitation Tip: In Collaborative Investigation, assign each group one record (e.g., rainfall, temperature, flood level) and ask them to present a one-minute summary to the class before compiling findings.

Setup: Groups at tables with access to source materials

Materials: Source material collection, Inquiry cycle worksheet, Question generation protocol, Findings presentation template

• Analyze
• Evaluate
• Create
• Self-Management
• Self-Awareness

Teaching This Topic

Teach this topic by starting with students’ prior experiences of minor tremors or news reports, then connect those moments to the science of plate boundaries and stress build-up. Avoid overloading students with jargon; instead, use analogies like a bent stick snapping to explain energy release. Research shows students grasp wave behavior better when they first feel vibrations through a simple table-top experiment before analyzing seismograph traces.

What to Expect

Students will confidently identify the causes of earthquakes, interpret seismograph data, and compare measurement scales to explain variations in earthquake effects. They will also articulate the limitations of early warning systems and hazard assessments in the UK context.

Watch Out for These Misconceptions

Common Misconception

During Mock Trial: The Flooding Blame Game, watch for students assuming that the most expensive damage equals the worst hazard.

What to Teach Instead

Use the trial’s evidence board to redirect students: ask them to compare flood depth maps, rainfall records, and evacuation notices to identify that infrastructure vulnerability amplifies natural hazard effects.

Common Misconception

During the dice-rolling simulation in Collaborative Investigation, watch for students interpreting '1 in 100 year flood' as a one-time event.

What to Teach Instead

Pause the simulation and ask students to plot their results on a timeline, highlighting clusters of high rolls to demonstrate that probabilities are recurring, not scheduled.

Assessment Ideas

Quick Check

After the Collaborative Investigation, provide students with a simplified seismograph strip showing P-wave and S-wave arrivals. Ask them to measure the time gap and use a travel-time graph to estimate the earthquake’s distance from the station.

Discussion Prompt

During the Mock Trial, use the closing arguments to assess understanding: present two earthquake scenarios and ask students to vote on intensity using Richter and Mercalli scales, then justify their choices in pairs before a class vote.

Exit Ticket

After Think-Pair-Share, ask students to sketch a simple diagram on an index card showing a fault line, focus, and epicenter, and write one sentence explaining how movement at the focus generates seismic waves.

Extensions & Scaffolding

• Challenge students to design a tweet-length warning for a simulated earthquake using seismograph data they interpret themselves.
• For students who struggle, provide a partially completed fault diagram with key terms missing, so they focus on sequencing the cause-and-effect chain.
• Deeper exploration: Have students research how UK building codes have changed after major earthquakes abroad and present a short report linking geological knowledge to policy decisions.

Key Vocabulary

Fault Line	A fracture or zone of fractures between two blocks of rock. Movement along fault lines is a primary cause of earthquakes.
Seismic Waves	Waves of energy that travel through the Earth's layers, originating from the point of an earthquake's origin or an explosion.
Epicenter	The point on the Earth's surface directly above the focus, where an earthquake's rupture begins.
Magnitude	A measurement of the energy released by an earthquake, typically determined by the amplitude of seismic waves recorded on a seismograph.
Intensity	A measure of the effects of an earthquake at a particular place, based on observed damage and human reactions.