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Famous eruptions and living with volcanoes

Tests: 6 of 10 right · Exam: 2 of 4 right · Kind: ★★ · Understood: 8 of 14 · Run: 2026-10-18, commit f3c23ea72

Lesson 47 of the geography course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: the lesson in the corpora.

Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.

Test 1 · ★★ · wrong ✗

A cartoon shows the people of Pompeii slowly drowned by a river of lava they could easily outwalk. What's closer to the truth?

  • 1. Cold lava froze them in ice — no support
  • 2. The town was just abandoned with no eruption — no support
  • 3. They were all killed by a tsunami from the bay and nothing else — ← Mova's choice · score 6
  • 4. Ash fall and fast pyroclastic flows buried the towns — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 3 with score 6, the only option with support. Its support: lesson 47, line 10: «Krakatoa's eruption in 1883 was heard nearly 5,000 km away, and its tsunamis killed over 36,000 people.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «tsunamis» (+3); the same action «kill» (+2); the same thing acted on «36,000 people» (+1). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 2 · ★★ · right ✓

"snow in june?? in 1816?? why"

  • 1. The Moon blocked the Sun all summer, a long eclipse lasting for months — no support
  • 2. A volcano, Tambora, filled the sky with ash and gas that cooled the Earth — ← Mova's choice · ✓ the right answer · score 3
  • 3. A giant glacier slid into Europe — no support
  • 4. The Earth moved much further away from the Sun that year, so the whole planet got cold — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 3, the only option with support. Its support: lesson 47, line 9: «After Tambora, its ash and gas high in the sky cooled the climate, and 1816 became the "year without a summer" in Europe and North America, with snow in June a…», reached through a sentence linked to the one the question matched. What matched: the same action «cool» (+2); the same doer «ash» (+2). Against it: a different thing acted on (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 3 · ★★ · wrong ✗

Your mate says: "Only idiots live next to a volcano." What's the fairer answer?

  • 1. Volcanic soil is rich for farming, and warnings can give time to leave — ✓ the right answer · no support
  • 2. He's right, nobody gets anything good from volcanoes, only danger — no support
  • 3. Volcanoes never erupt where people live — ← Mova's choice · score 3
  • 4. People there are paid by the government to guard the volcano day and night — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 3, the only option with support. Its support: lesson 36, line 13: «Aboriginal and Torres Strait Islander peoples have lived in Australia for at least 50,000 to 65,000 years, among the oldest continuing cultures in the world.», reached through the remembered sentence the question matched. What matched: the same action «live» (+3). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 4 · ★★ · wrong ✗

What would happen today if a Tambora-size eruption happened again?

  • 1. Nothing, modern cities have roofs that stop ash — ← Mova's choice · score 4
  • 2. The Earth would get much warmer for a whole century — no support
  • 3. Harvests could fail around the world for a year or more — ✓ the right answer · no support
  • 4. Only Indonesia would notice anything at all — no support

Why: It took the question to ask what happens next. It chose option 1 with score 4, the only option with support. Its support: lesson 45, line 16: «Tsunamis are sometimes called tidal waves, but they have nothing to do with tides.», reached through what followed the sentence the question matched. What matched: the same thing acted on «nothing» (+4); the same light verb (be, have, do, get, go) (+2). Against it: a different doer (counts against) (-2). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 5 · ★★ · right ✓

A volcano's ground has swollen 50 cm and small quakes are happening every hour. What should the authorities do?

  • 1. Tell everyone to climb up and look — no support
  • 2. Wait until lava appears before doing anything — no support
  • 3. Prepare to move people away, an eruption may be coming — ← Mova's choice · ✓ the right answer · score 5
  • 4. Nothing, those signs mean the volcano is dying — no support

Why: It took the question to ask what is done. It chose option 3 with score 5, the only option with support. Its support: lesson 47, line 15: «Volcanologists watch for small earthquakes, swelling ground and changes in gas to warn when an eruption is coming.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «eruption» (+2); it fills the role the question asks for (+2); the same action «come» (+1). · the question and its options parsed, with trees and pragmatics

Test 6 · ★★ · right ✓

"bloody volcano in iceland and my holiday flight's cancelled, what a joke" Why was it cancelled?

  • 1. The planes were needed to rescue people — no support
  • 2. Volcanic ash can wreck jet engines, so flights are grounded — ← Mova's choice · ✓ the right answer · score 10
  • 3. The ash made the runways too hot — score 6
  • 4. Iceland closed all the airports in the world for its own safety — no support

Why: It took the question to ask who or what does it. It chose option 2 with score 10, against 6 for the next best. Its support: lesson 47, line 16: «The 2010 eruption of Eyjafjallajökull in Iceland grounded most flights across Europe for about a week, because volcanic ash can melt inside jet engines and sto…», reached through the remembered sentence the question matched. What matched: the same action «ground» (+4); its «because» matches the remembered cause (+4); the same thing acted on «most flights» (+2). · the question and its options parsed, with trees and pragmatics

Test 7 · ★★ · wrong ✗

How could Laki in Iceland kill so many people without burying any town?

  • 1. Its noise made everyone deaf — ← Mova's choice · no support
  • 2. Its lava flowed across the whole country — no support
  • 3. Its poisonous gas killed the livestock, and people starved — ✓ the right answer · no support
  • 4. It caused a giant tsunami — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 8 · ★★ · right ✓

Mount St Helens erupted sideways, not straight up. Why?

  • 1. Its top had been dug away by miners — no support
  • 2. It erupted under a lake — no support
  • 3. Its north side collapsed in a landslide, letting the blast out sideways — ← Mova's choice · ✓ the right answer · score 6
  • 4. It was hit by a strong wind that bent the column of ash right over — no support

Why: It took the question to ask why something happens (its cause). It chose option 3 with score 6, the only option with support. Its support: lesson 47, line 12: «Mount St Helens in the USA erupted in 1980 when its whole north side collapsed in a giant landslide and the blast burst out sideways.», reached through the same lesson line as the sentence the question matched. What matched: the same action «collapse» (+2); the same doer «whole north side» (+2); the same place «giant landslide» (+2). · the question and its options parsed, with trees and pragmatics

Test 9 · ★★ · right ✓

A clever puzzle: Krakatoa's bang was heard nearly 5,000 km away. Sound travels about 1,200 km an hour. Roughly how long after the blast did the far listeners hear it?

  • 1. About 4 hours — ← Mova's choice · ✓ the right answer · no support
  • 2. About 4 days — no support
  • 3. About 4 minutes — no support
  • 4. About 4 seconds, at once — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 10 · ★★ · right ✓

Why is Iceland one of the few countries that heats almost all homes from the ground?

  • 1. It is closer to the Sun than any other country on Earth, so its rocks are warm — no support
  • 2. It imports hot water from Africa in huge tanker ships every single month — no support
  • 3. It burns all its forests for heat — no support
  • 4. It sits on the Mid-Atlantic Ridge, with volcanic heat close to the surface — ← Mova's choice · ✓ the right answer · score 3

Why: It took the question to ask why something happens (its cause). It chose option 4 with score 3, the only option with support. Its support: lesson 47, line 14: «Iceland sits on the Mid-Atlantic Ridge, with volcanic heat close to the surface, and it uses this heat to make electricity and to heat almost all its homes.», reached through the same lesson line as the sentence the question matched. What matched: the same action «sit» (+2); the same place «mid-atlantic ridge» (+2); the same circumstance (+1). Against it: a different doer (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Which of the following statements most accurately characterises the consequences of the eruption of Tambora in 1815?

  • 1. The destruction of the Roman towns of Pompeii and Herculaneum — ← Mova's choice · no support
  • 2. The grounding of aviation throughout Europe for a period of one week — no support
  • 3. A climatic disturbance which rendered 1816 a year without a summer in Europe and North America — ✓ the right answer · no support
  • 4. The collapse of the northern flank of a volcano in the United States — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

Identify the principal reason for which human settlement persists in the vicinity of active volcanoes.

  • 1. The legal prohibition of settlement elsewhere — ← Mova's choice · no support
  • 2. The total absence of seismic activity in such regions of the world — no support
  • 3. The protection which volcanoes afford against flooding — no support
  • 4. The exceptional fertility of soils derived from volcanic ash — ✓ the right answer · no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · right ✓

Select the response that is consistent with the established facts concerning the monitoring of volcanoes.

  • 1. Seismic activity, deformation of the ground and changes in gas emission are observed — ← Mova's choice · ✓ the right answer · no support
  • 2. No observation is possible prior to the emission of lava — no support
  • 3. The colour of the summit is photographed annually — no support
  • 4. The phases of the Moon are recorded and the date of eruption is computed — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · right ✓

It is given that the eruption of Eyjafjallajökull occurred in 2010. Ascertain the consequence thereof which is consistent with the established facts.

  • 1. The suspension of the majority of flights across Europe for approximately one week — ← Mova's choice · ✓ the right answer · no support
  • 2. The burial of a Roman town beneath ash — no support
  • 3. The generation of tsunamis killing over thirty-six thousand persons in Indonesia — no support
  • 4. The death of approximately one-fifth of the population of Iceland through famine and disease — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/geography/47-famous-eruptions-and-living-with-volcanoes/