Describe how people prepare for and respond to tectonic hazards through prediction, planning, building design and emergency action

What this dot point is asking

This outcome asks you to describe how people prepare for tectonic hazards before they happen and how they respond during and after an event, in order to reduce death, injury and damage. The central idea is that we cannot stop earthquakes and eruptions, but good preparation and a fast response can make a huge difference to how much harm they cause.

The answer

Monitoring and prediction

Scientists watch hazards using instruments. Volcanoes can often be predicted because they give warning signs: small earthquakes, swelling of the ground, rising temperatures and the release of gases. These are monitored with seismometers and other equipment, and a forecast can be issued. Earthquakes are much harder to predict because they strike suddenly with almost no warning, so the focus shifts to preparation rather than prediction.

Warning systems and education

Where prediction is possible, warning systems alert people in time, for example tsunami warnings broadcast after an undersea earthquake. Education and drills are vital, especially for earthquakes: teaching people what to do (such as "drop, cover and hold") and holding regular practice drills means they react quickly and calmly, which saves lives.

Building design

Strong building design reduces damage from shaking. Earthquake-resistant buildings have deep, firm foundations and flexible frames that sway without collapsing, and may use cross-bracing or special supports. Important buildings such as hospitals are built to the highest standard. Good design means buildings stay standing and protect the people inside.

Planning and evacuation

Communities plan in advance: marking evacuation routes and safe zones, storing emergency supplies (water, food, first aid), and training rescue teams. For volcanoes, danger zones are mapped so people can be moved out before an eruption. Planning means the response is fast and organised rather than chaotic.

Emergency response and recovery

When a hazard strikes, the immediate response is to rescue survivors, treat the injured, and provide shelter, water and food. Afterwards, the longer-term recovery rebuilds homes, roads and services, ideally to a stronger standard so the area copes better next time.

Examples in context

Example 1. Japan's earthquake preparedness. Japan reduces earthquake deaths through strict earthquake-resistant building codes, an early-warning system that can alert phones seconds before strong shaking arrives, and nationwide drills practised from school age. These measures mean even powerful quakes cause fewer casualties than they would in an unprepared country.

Example 2. Volcano monitoring in Indonesia. Indonesia's volcano agency monitors active volcanoes such as Merapi for small earthquakes, ground swelling and gas, raising alert levels and evacuating residents before major eruptions. Successful evacuations have saved many lives, showing how prediction and planning work together for volcanic hazards.

Try this

Q1. Explain why volcanoes are easier to predict than earthquakes. [2 marks]

• Cue. Volcanoes give warning signs (small earthquakes, ground swelling, gas release) that scientists can monitor; earthquakes strike suddenly with almost no warning.

Q2. Describe one feature of an earthquake-resistant building and how it helps. [2 marks]

• Cue. A flexible frame (or deep foundations) lets the building sway without collapsing, protecting the people inside.

Q3. State two things a community should prepare in advance to respond to a tectonic hazard. [2 marks]

• Cue. Marked evacuation routes and safe zones; stored emergency supplies (and trained rescue teams).