Hazard or Disaster?

Overview

Students distinguish between a hazard and a disaster, applying their prior learning about earthquakes, Earth’s layers, impacts, and responses. They will consider how the same natural hazard can have different outcomes depending on exposure, vulnerability, preparedness and management.

Learning intentions

• WALT explain the difference between a hazard and a disaster.
• WALT classify earthquake effects as direct or indirect, and short-term or long-term.
• WALT use evidence to explain why an earthquake becomes a disaster.
• WALT evaluate how planning and management can reduce disaster impacts.

Success criteria

• I can define hazard and disaster in my own words.
• I can explain that a hazard does not always become a disaster.
• I can classify examples of earthquake impacts accurately.
• I can justify one way people can reduce disaster risk.

Curriculum links

• Geography — Hazard management: global locations affected by different natural hazards.
• Geography — Case study of hazard management: direct and indirect effects of hazards.
• Geography — Case study of hazard management: evaluation of how hazards were managed.
• Geography — Earthquakes and volcanic eruptions: planning can manage earthquake risk even though earthquake timing and strength cannot be predicted.

Lesson structure (25 minutes)

1. 0–3 min · Hook and retrieval. Display the opening hazard-or-disaster image: two contrasting earthquake scenes, such as an empty rural road with cracks and a collapsed urban building. Ask, “Are both of these disasters?” Students silently choose hazard, disaster or unsure, then share one reason with a partner. Briefly revisit that earthquakes are caused by movement in Earth’s crust and cannot be predicted precisely.

2. 3–7 min · Clarify key ideas. Use the definition and comparison slides to establish: a hazard is a potentially harmful natural event or process; a disaster occurs when a hazard seriously disrupts a community and causes major impacts beyond its ability to cope. Emphasise that an earthquake in an unpopulated area may be a hazard without becoming a disaster. Students record a one-sentence definition of each on the hazard-versus-disaster worksheet.

3. 7–14 min · Impact sorting. Display the earthquake impact examples and read the first example aloud: “A building collapses during strong shaking.” In pairs, students classify examples on the worksheet in two ways: direct or indirect impact, and short-term or long-term impact. Include examples such as injury, liquefaction, power cuts, loss of income, damaged roads, disrupted schooling, disease risk, displacement and rebuilding costs. Take answers from several pairs, asking, “What evidence supports your choice?” Accept that some impacts may overlap, provided students justify their reasoning.

4. 14–20 min · Community case challenge. Present the community comparison scenario: two towns experience an earthquake of similar strength. Town A has strict building codes, emergency supplies, public education, evacuation plans and strong communications. Town B has older buildings, limited emergency services, little planning and many people living in unsafe locations. Groups of four use the worksheet to answer: “Which town is more likely to experience a disaster, and why?” Students must include at least two factors and one direct or indirect impact. Invite two groups to share; highlight that disaster risk is shaped by human decisions and vulnerability, not only by the hazard’s physical strength.

5. 20–23 min · Evaluate management. Use the management discussion prompt. Students choose one management action—stronger buildings, earthquake drills, emergency kits, land-use planning or public warning systems—and complete: “This could reduce disaster impacts because…” Partners compare responses and identify whether the action mainly reduces immediate impacts, longer-term impacts, or both. Reinforce that earthquakes cannot be stopped or accurately predicted, but communities can prepare and reduce risk.

6. 23–25 min · Exit check. Students complete the final three questions on the hazard-versus-disaster worksheet: define hazard, define disaster, and explain why an earthquake might be a hazard in one place but a disaster in another. Collect worksheets to identify misconceptions for the next lesson.

Resources

• the hazard-versus-disaster slide deck
• the hazard-versus-disaster worksheet
• Projector or interactive board
• Pens or pencils
• Timer
• Board and markers

Assessment

• Listen during pair sorting and question students about the evidence behind their classifications.
• Check group explanations for accurate use of hazard, disaster, vulnerability, preparedness, direct, indirect, short-term and long-term impacts.
• Use the exit responses to assess whether students understand that the same earthquake can have different consequences in different communities.

Differentiation

• Provide a word bank and sentence starters on the worksheet, such as “A hazard is…”, “This becomes a disaster when…”, and “This impact is indirect because…”.
• Read examples aloud, pair students strategically, and allow students to explain ideas orally before writing. Use clear visual symbols for direct/indirect and short-term/long-term.
• For students needing further support, offer two choices rather than all classifications at once and revisit the definition using the opening images.
• Extend confident students by asking them to rank the community’s management actions and justify which would have the greatest effect on both immediate and long-term impacts.