Human Impacts Earth

Overview

In this lesson, students research how earthquakes and volcanoes affect human populations, including immediate hazards, longer-term recovery, and how communities prepare and respond.

Learning intentions

• Students will be able to describe how tectonic events (earthquakes and volcanoes) can harm people and disrupt communities.
• Students will be able to explain how risk depends on both hazards and exposure (where people live, building quality, preparedness).
• Students will be able to discuss recovery efforts and factors that influence how quickly communities return to normal.

Success criteria

• I can explain at least two direct impacts of tectonic events on humans (for example injuries, deaths, housing damage, displacement).
• I can describe at least one indirect impact (for example supply shortages, disease risk, long-term economic effects).
• I can discuss how preparedness and response affect outcomes for people.

Curriculum links

• Earth processes and natural hazards, including how tectonic activity can create hazards for humans.
• Using evidence to explain impacts of natural events on people, including risk and mitigation ideas.
• Scientific thinking: evaluating information from sources and using it to support claims.
• Communicating science ideas using clear explanations, including cause-and-effect reasoning.

Lesson structure (60 minutes)

1. 5 min — Starter: “Hazard to impact” quick write

• Display two prompts: “What can earthquakes and volcanoes do to people?” and “Why do impacts differ between places?”
• Students do a 2–3 minute quick write, then share one idea with a partner. Teacher records key words (hazard, risk, shelter, recovery).

2. 10 min — Mini-lesson: impacts and risk factors

• Briefly teach the difference between hazard (the event) and risk (how serious the outcome is for people).
• Use a simple cause-and-effect sequence: tectonic event → physical effects → human impacts (injury, displacement) → recovery needs (shelter, water, rebuilding).
• Emphasise that impacts depend on things like building standards, emergency planning, time of day, population density, and access to medical care.

3. 35 min — Group research task (structured)

• Organise students into groups of 4–5 with mixed literacy levels.
• Each group investigates one case study theme: either earthquakes or volcanoes, and addresses three questions:
• What were the main tectonic event effects?
• What were the immediate human impacts?
• What were the recovery and long-term effects?
• Provide a research sheet with sentence stems to reduce writing load, for example:
• “The event caused…”
• “People were affected because…”
• “Recovery was difficult when…”
• Teacher circulates, checking understanding and guiding students to use evidence from what they find (facts, numbers if available, clear examples).

4. 7 min — Share-out: “Claim–Evidence–Reasoning”

• Each group shares one key insight using: Claim (impact) → Evidence (what happened) → Reasoning (why it matters for people).
• Class listens for whether statements clearly link tectonic causes to human impacts.

5. 3 min — Exit ticket

• Students answer: “One factor that changes risk for people is _____. I know this because _____.”
• Collect to identify misconceptions (for example confusing hazard with risk).

Resources

• Case study fact sheets (teacher-prepared, age-appropriate reading levels)
• Research question sheet with sentence stems and graphic organiser (cause → impacts → recovery)
• Timer and checklist for group roles (reader, summariser, evidence finder, speaker)
• Note-taking template (short dot points allowed)
• Visuals: photos/diagrams of earthquake/volcano impacts (damage, evacuation, shelters)
• Optional scaffold: simplified text version (dyslexia-friendly formatting)
• Highlighters or sticky notes for evidence tagging
• Exit ticket slips
• Markers, A3 paper or shared slide for group summary

Assessment

• Formative: teacher observation during group research (use of evidence and cause-and-effect links).
• Formative: group share-out using Claim–Evidence–Reasoning.
• Summative-formative check via exit ticket to assess understanding of impacts and risk factors.

Differentiation

• Support (literacy and language)
• Provide simplified reading passages and audio recordings of the case study text where possible.
• Offer sentence stems and a partially completed organiser (students fill missing words).
• Allow responses as dot points, diagrams, or annotated images rather than full paragraphs.
• Support (grouping and roles)
• Assign roles so every student contributes (evidence finder can highlight facts; summariser completes stems).
• Pre-teach key terms verbally and anchor them on a word wall (hazard, risk, evacuation, rebuilding).
• Extension (advanced learners)
• Students add a “mitigation and preparation” element: identify two strategies that reduce harm (building codes, early warning, evacuation planning).
• Students compare two places (or two time periods) and explain why outcomes differed using risk factors.
• EAL/SEN
• Provide bilingual or simplified keyword supports if available.
• Use visual models and consistent sentence frames to reduce cognitive load.
• Check understanding with targeted prompts (“What was the effect? Who was affected? What changed after?”).
• Dyslexia-friendly reading options
• Use dyslexia-friendly text: larger font, clear spacing, minimal busy backgrounds.
• Provide shorter paragraphs, consistent headings, and optional audio versions of readings.
• Permit oral summarising into a recorder or teacher notes.

Extension (optional)

• Develop a short presentation on recovery efforts for the class or another group: students include (1) immediate actions, (2) rebuilding and long-term support, and (3) one lesson learned for future preparedness.