Good Learning Co.
SavannahYear 8
← Geography
GeographyRestless Earth: plates, earthquakes and volcanoes25 min★★★ difficulty

Living with tectonic hazards: prediction, protection and planning

Around a tenth of the world's population lives within reach of an active volcano. That is not carelessness. It is a trade-off, and the job of a geographer is to weigh both sides.

Part of your national curriculum
  • Human and physical geography: Understand tectonic processes and hazards, including earthquakes and volcanic activity
  • Place knowledge: Understand the physical and human characteristics of an area of the UK and a wider region of the world beyond Europe

Lesson overview

What you'll learn in this lesson

Evaluate why people live in hazardous places and how risk is reduced.

Key learning points

  • • Why people stay
  • • Prediction
  • • Protection
  • • Planning and preparedness

This lesson at a glance

  • 25 minutes
  • 17 parts to scroll through
  • 4 quick checks
  • Marked quiz at the end
  • Gentle pace: short sittings with pauses

Words to know

peoplehazardousplacesreducedprediction

Scroll down — the lesson carries on below

Part 1 of 17 · Discover6%
1

Watch & discover

Part 1 of 17

Watch first

Living with tectonic hazards: prediction, protection and planning

An English teaching video on this topic from Equatoro. Watch it, then scroll down for the lesson.

In a nutshell

Evaluate why people live in hazardous places and how risk is reduced.

2

Learning cycle

Part 2 of 17

Learning cycle 1 of 2

Part 1 · Why people stay

A short piece of teaching, then a check to make sure it has landed.

3

Explore the idea

Part 3 of 17

Learn

Why people stay

Volcanic soils are extremely fertile, which supports dense farming on the slopes of Etna or in Java. Geothermal energy heats and powers most of Reykjavik. Tourism brings jobs and money. Minerals such as sulphur, copper and diamonds are mined in tectonic zones. Beyond the benefits, many people simply cannot afford to move, have family and work there, or believe an event is unlikely in their lifetime.

4

Explore the idea

Part 4 of 17

Learn

Prediction

Volcanoes can be monitored and often predicted: seismometers detect rising magma, tiltmeters and satellites measure the bulge of the volcano's flank, and gas sensors pick up increasing sulphur dioxide. That warning allows evacuation. Earthquakes cannot be predicted with useful precision. The best available is a probability forecast for a region over decades, plus seconds-long automated warnings that stop trains and shut off gas once shaking begins.

5

Quick check

Part 5 of 17

Quick check

Which hazard can be predicted reliably enough to evacuate?

6

Quick check

Part 6 of 17

Quick check

What does a base isolator do?

7

Learning cycle

Part 7 of 17

Learning cycle 2 of 2

Part 2 · Protection

A short piece of teaching, then a check to make sure it has landed.

8

Reset break

Part 8 of 17

Pause

That's sitting 1 of 2 done

Stretch, get a drink, look out of the window. There is no timer and nothing is counting down — your place is saved, so you can come back in five minutes or tomorrow.

Stop here for now
9

Explore the idea

Part 9 of 17

Learn

Protection

Aseismic design uses cross-bracing, deep foundations anchored into bedrock, counterweights or base isolators that let the building move independently of the ground, and automatic shut-off valves. Retrofitting older buildings is expensive but saves the most lives. Against lava and lahars, engineers use diversion channels, barriers and, for smaller flows, water cooling.

10

Explore the idea

Part 10 of 17

Learn

Planning and preparedness

Hazard maps keep hospitals, schools and fuel depots off the highest risk ground. Drills, such as Japan's annual national exercise, mean people act automatically. Emergency supplies, insurance, evacuation routes and clear public information turn a disaster into a manageable emergency. Planning is usually the cheapest of the three and gives the best value per pound spent, which is a strong evaluation point.

11

Quick check

Part 11 of 17

Quick check

Why do people farm the slopes of active volcanoes?

12

Quick check

Part 12 of 17

Quick check

Which measure gives the best protection per pound in a lower income country?

13

Explore the idea

Part 13 of 17

Worked example

Worked answer: 'Prediction is the most effective way to reduce the effects of tectonic hazards.' Evaluate (9 marks)

Argue for: volcanic prediction genuinely works, and monitoring plus timely evacuation has saved thousands of lives, so where the hazard is a volcano prediction is powerful. Argue against: earthquakes cannot be predicted, so in the world's most densely populated seismic cities prediction offers almost nothing, and warning is only useful if people have somewhere to go. Compare: protection through aseismic building saves lives in every earthquake without any warning, and planning through drills and hazard maps is cheap enough for lower income countries to afford. Conclude with a judgement that is conditional: prediction is most effective for volcanoes, but for earthquakes a combination of building design and preparedness saves far more lives, so the statement is only partly true.

14

Challenge round

Part 14 of 17

Game · Sort it

Which of these are true?

Drag each card into the right column. Tap a card first if dragging is fiddly.

True

Not true

15

Challenge round

Part 15 of 17

Game · Fill the gaps

Finish the sentences

Choose the word that belongs in each gap.

Beyond the benefits, many ____ simply cannot afford to move, have family and work there, or believe an event is unlikely in their lifetime.

16

Mastery quiz

Part 16 of 17

Marked quiz

End of lesson quiz: Living with tectonic hazards: prediction, protection and planning

4 questions, marked with the reasoning shown. No timer.

  1. 1. Which hazard can be predicted reliably enough to evacuate?

  2. 2. What does a base isolator do?

  3. 3. Why do people farm the slopes of active volcanoes?

  4. 4. Which measure gives the best protection per pound in a lower income country?

17

Lesson round-up

Part 17 of 17

Lesson round-up

Ready when you are

Quiz score

Not sat

Games

Not played

Points this lesson

0

Best run

0 in a row

Luna: 0 out of 4 on the practice checks. Only if you feel up to it — one more?

Ask Luna

Do the work

Your written work for this lesson

This is the part you'd do in your book at school. Pick the pieces below, write here or on paper, and photograph anything you draw or work out.

Case study

Flooding on the River Calder

The town of Harbrook sits where a steep valley opens onto a flat floodplain. In December 2015, 120 mm of rain fell in 36 hours onto ground that was already saturated. The river rose 2.4 m in five hours, and 380 homes and 54 businesses flooded. Two roads and the railway closed for eleven days.

Geographers pointed to physical causes — steep slopes, impermeable rock, heavy rainfall — and human causes: moorland drained upstream, new housing built on the floodplain, and drains designed for smaller storms.

Since then the town has planted 40 hectares of woodland upstream, built leaky dams in small streams, and raised flood walls to 1.8 m. In the storm of 2020 the peak river level was 0.3 m lower and 40 homes flooded, not 380.

Written for Good Learning Co.

Reading questions

  1. List two physical and two human causes of the 2015 flood.
  2. Explain how planting woodland upstream lowers the river's peak level.
  3. Using the figures, judge how successful the scheme has been. Quote data in your answer.

  • Case study notes

    Writing

    Write the place, the facts and the figures from this lesson so you can revise them later.

    Half a page

  • Explain answer

    Writing

    Answer in full sentences, giving causes and effects. Use one figure or place name as evidence.

    8–10 sentences

  • Map or sketch

    Diagram

    Draw the map, cross-section or field sketch with a key, title and labels, then photograph it.

    1 map with a key

  • Data work

    Working out

    Plot your figures as a graph on paper and write one sentence about the pattern.

    1 graph + 1 sentence

Saved as you type.

Part 1 of 17 · Watch & discover

How this is going

  • Not looked at yet

    Understand tectonic processes and hazards, including earthquakes and volcanic activity

  • Not looked at yet

    Understand the physical and human characteristics of an area of the UK and a wider region of the world beyond Europe

Good Learning Co. — personalised UK curriculum learning, built around what each learner loves.