Seismic Patterns

Overview

In this lesson, students investigate what causes earthquakes and how their effects can be explained using Earth structure, plate motion and energy release. Students interpret simple evidence and build clear cause-and-effect explanations.

Learning intentions

• Students will investigate how earthquakes form at plate boundaries.
• Students will explain how stress builds in Earth materials and is released as seismic waves.
• Students will analyse impacts of earthquakes on people, infrastructure and ecosystems.
• Students will use scientific language to justify claims with evidence from observations or data.

Success criteria

• I can describe where earthquakes commonly occur and link this to plate boundaries.
• I can explain how stress, rock fracture and seismic waves lead to ground shaking.
• I can identify likely effects of earthquakes and justify them using evidence or examples.
• I can communicate my explanation clearly using appropriate science terms (with support if needed).

Curriculum links

• Earth and space sciences: tectonic activity and how Earth systems change.
• Physical sciences: forms of energy and energy transfer linked to natural events.
• Science as a human endeavour: using evidence and models to explain events and reduce risk.
• Scientific literacy: interpreting and using data to support explanations.

Lesson structure ({total minutes})

1. 00–05 — WALT and hook Share WALT: “We Are Learning To analyse earthquakes.” Show a short, teacher-prepared scenario (e.g., “a sudden ground shake and broken roads”) and ask: “What causes this, and what decides how bad it is?”

2. 05–12 — Build background with a model Teacher explains the sequence: tectonic plates move, friction causes stress build-up, rock breaks suddenly, energy travels as seismic waves. Use a simple diagram or physical model (foldable layers or paper “plates” with an elastic strip/crease to represent stress and release). Students do a quick sketch of the process.

3. 12–22 — Investigate: causes and effects evidence In pairs, students use a provided evidence pack (printed cards or worksheet) showing:

• plate boundary location map snippets
• a “fault line” cartoon with stress indicators
• simple intensity/effect examples (e.g., light shaking vs severe shaking impacts) Students sort evidence into “cause” and “effect” categories, then choose one cause chain to explain.

4. 22–32 — Guided explanation writing (sentence starters) Students complete an explanation template:

• Claim (what causes earthquakes)
• Evidence (what the map/model/data shows)
• Reasoning (how stress becomes seismic waves, then shaking, then impacts) Provide sentence starters for students who need literacy support, such as: “Earthquakes occur when…”, “As plates move…”, “When stress exceeds strength…”, “Seismic waves cause…”, “This leads to…”.

5. 32–45 — Whole-class reasoning check + misconceptions Facilitate discussion: “What might be a misconception?” (e.g., “earthquakes happen because the ground is cracking only at the surface”; “all earthquakes are equally damaging”). Students use one-minute “think-pair-share” to correct or refine an explanation. Teacher records key phrases on the board (stress, fracture, seismic waves, intensity, impacts).

6. 45–55 — Mini-assessment: explain and interpret Students answer 2 questions independently:

• “Explain how earthquakes occur using a cause-and-effect sequence.”
• “Use the provided evidence to predict likely impacts in a described setting.” Collect quickly for formative feedback.

7. 55–60 — Exit ticket + consolidation Exit ticket prompt: “One scientific idea about earthquakes I understand better now is…” and “One question I still have is…”. Teacher checks for use of key reasoning words (stress, waves, plate boundaries, impacts).

Resources

• Teacher-prepared diagram/model of plate boundary and stress release
• Evidence pack (maps or simplified plate boundary visuals, fault cartoon, intensity/effect examples)
• Explanation template with cause-and-effect structure
• Sentence starters and word bank (stress, friction, fracture, seismic waves, shaking, impacts)
• Coloured pencils/highlighters for sorting “cause” vs “effect”
• 2-question mini-assessment sheet
• Exit ticket slips
• Display or projector for WALT and key terms

Assessment

• Formative: observation during evidence sorting and template completion
• Formative: mini-assessment responses scored against success criteria
• Informal: exit ticket to identify misconceptions and next-lesson needs

Differentiation

• Provide sentence starters, structured templates and a word bank for students who struggle with literacy.
• Offer dyslexia-friendly reading options: larger font, reduced text density, and audio read-through by teacher or student-supported recording.
• Use visuals and colour coding (cause/effect) to reduce reliance on dense writing.
• For students ready for more challenge, ask them to include additional reasoning linking intensity to distance/effect and to compare at least two evidence sources.

Extension (optional)

• Create a safety plan for earthquake preparation: students design a simple “Before, During, After” plan for a school or home context, justifying each step using scientific reasoning about ground shaking and risk.