Storms: thunder, lightning, hurricanes and tornadoes

Tests: 7 of 13 right · Exam: 2 of 4 right · Kind: ★ · Understood: 8 of 17 · Run: 2026-10-18, commit f3c23ea72

Lesson 68 of the world 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 · ★ · right ✓

The wind around a hurricane suddenly drops and the Sun comes out. Why should people stay indoors?

1. They are in the eye, and the fierce winds will soon return — ← Mova's choice · ✓ the right answer · no support
2. The sea is now always calm and safe — no support
3. The storm has ended and gone away for good, so it is safe to go out — no support
4. The eye is the only part that brings floods — 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 2 · ★ · wrong ✗

A hurricane crosses a warm sea and then a cold one. What is likely to happen?

1. It grows faster over the cold sea because cold air sinks down — ← Mova's choice · score 5
2. It grows over the warm sea and weakens over the cold sea — ✓ the right answer · score 5
3. It stays exactly the same everywhere — no support
4. It turns into a tornado over the cold sea — score 5

Why: It took the question to ask which statement is true. It chose option 1 with score 5, tied with another option at 5 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 68, line 3: «A hurricane is a giant spinning storm that forms over warm tropical seas: the warm water feeds it with rising damp air, so it grows stronger over the sea and w…», reached through the same lesson line as the sentence the question matched. What matched: the same action «grow» (+4); the same place «sea» (+2). Against it: a different doer (counts against) (-1). The right option, 2, scored 5. · the question and its options parsed, with trees and pragmatics

Test 3 · ★ · wrong ✗

Thunder is rumbling and you are playing football in an open field. What should you do?

1. Go into a building or a car as soon as you can — ✓ the right answer · no support
2. Shelter under the tallest tree nearby until it stops — no support
3. Lie down flat in the middle of the field and wait — ← Mova's choice · score 4
4. Keep playing until the rain starts, then run home — score 4

Why: It took the question to ask what is done. It chose option 3 with score 4, tied with another option at 4 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 67, line 2: «Clouds have names by their shape and height: cumulus are white puffy heaps of fair weather; stratus are flat grey sheets that may bring drizzle; cirrus are thi…», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+3); the same action «lie» (+2). Against it: a different doer (counts against) (-1). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 4 · ★ · right ✓

Which is true about lightning?

1. It only strikes when it is raining hard — score 5
2. It only strikes in hot countries — score 5
3. It never strikes the same place twice — score 1
4. It can strike the same place many times — ← Mova's choice · ✓ the right answer · score 6

Why: It took the question to ask which statement is true. It chose option 4 with score 6, against 5 for the next best. Its support: lesson 68, line 9: «Lightning can strike the same place more than once, and tall objects are struck most often.», reached through the remembered sentence the question matched. What matched: the same action «strike» (+3); the same doer «lightning» (+2); the same thing acted on «same place» (+1). · the question and its options parsed, with trees and pragmatics

Test 5 · ★ · wrong ✗

A town by the sea is told a hurricane is coming. What is often the greatest danger?

1. The loud noise of thunder — ← Mova's choice · no support
2. The cold air after the storm — no support
3. Flooding from the storm surge — ✓ the right answer · no support
4. The bright flashes of lightning — 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 6 · ★ · right ✓

One house on a street is wrecked by a storm, while the house next door is hardly touched. What kind of storm was it probably?

1. A tornado — ← Mova's choice · ✓ the right answer · no support
2. A snowstorm — no support
3. A hurricane — no support
4. A heat wave — 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 7 · ★ · wrong ✗

The same kind of storm hits the Philippines and Florida. What are its usual names there?

1. A monsoon in both places — ← Mova's choice · no support
2. A tornado in both places — no support
3. A typhoon in the Philippines, a hurricane in Florida — ✓ the right answer · no support
4. A blizzard in the Philippines, a cyclone in Florida — 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 · ★ · wrong ✗

If the oceans near the equator became much colder, what would most likely happen?

1. Hurricanes would move to the poles — ← Mova's choice · no support
2. Fewer and weaker hurricanes would form — ✓ the right answer · no support
3. More and stronger hurricanes would form — no support
4. Tornadoes would turn into hurricanes — 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 9 · ★ · right ✓

A tornado warning is given. Where in a house is the safest place?

1. On the top floor near the roof — no support
2. A small inside room or basement on the lowest floor — ← Mova's choice · ✓ the right answer · score 6
3. Outside in the garden, as far away from the walls as you can get — no support
4. Next to a big window to watch it — no support

Why: It took the question to ask where. It chose option 2 with score 6, the only option with support. Its support: lesson 68, line 18: «In a tornado the safest place is a small inside room or a basement on the lowest floor, away from windows.», reached through the option's own match among the sentences about the question's things. What matched: the same property (+3); the same doer «safest place» (+2); the same light verb (be, have, do, get, go) (+1). · the question and its options parsed, with trees and pragmatics

Test 10 · ★ · right ✓

thunderstorm and we're at the park, where do we go

1. Inside a building or a car with a metal roof — ← Mova's choice · ✓ the right answer · no support
2. Out in the middle of the open field, lying flat — no support
3. Next to the metal fence at the edge of the field — no support
4. Under the tallest tree in the park, close to the trunk — 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 11 · ★ · right ✓

how come the eye of a hurricane is all calm

1. The eye is a calm centre, and the strongest winds are in the wall around it — ← Mova's choice · ✓ the right answer · score 6
2. The eye is where the wind is strongest of all — no support
3. The storm has already ended when the eye arrives — no support
4. The eye is a gap where the storm sucks up the rain — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 6, the only option with support. Its support: lesson 68, line 14: «The eye in the middle of a hurricane is calm, and the strongest winds blow in the wall of cloud around it.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «strongest winds» (+4); the same place «wall» (+2). · the question and its options parsed, with trees and pragmatics

Test 12 · ★ · right ✓

Leo says lightning never strikes the same spot twice. true?

1. No, lightning only ever strikes the ground once a year — score 5
2. Yes, but only if the place was a tall tree — no support
3. Yes, once struck, a place is safe for good — score 5
4. No, it can strike the same place many times, mostly tall things — ← Mova's choice · ✓ the right answer · score 6

Test 13 · ★ · wrong ✗

a video said hurricanes and typhoons are totally different storms. right?

1. Yes, hurricanes are just very big tornadoes that have moved over land — ← Mova's choice · score 5
2. Yes, typhoons only form over cold seas — score 5
3. No, a typhoon is just a small thunderstorm — no support
4. No, they are the same kind of storm with different names by region — ✓ the right answer · score 4

Why: It took the question to ask which statement is true. It chose option 1 with score 5, tied with another option at 5 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 68, line 3: «A hurricane is a giant spinning storm that forms over warm tropical seas: the warm water feeds it with rising damp air, so it grows stronger over the sea and w…», reached through the same lesson line as the sentence the question matched. What matched: the same action «move» (+4); the same place «land» (+2). Against it: a different doer (counts against) (-1). The right option, 4, scored 4. · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Identify the safest place in which a person may remain during a thunderstorm.

1. Beneath a solitary tall tree — ← Mova's choice · no support
2. Upon an open hilltop — no support
3. In the water of a lake — no support
4. Within a building or a car with a metal roof — ✓ 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 2 · formal language · right ✓

Which of the following statements most accurately characterises the source of the energy of a hurricane?

1. Cold air descending from the poles — no support
2. Warm water of tropical seas — ← Mova's choice · ✓ the right answer · score 7
3. Lightning within its clouds — no support
4. Heat from volcanoes beneath the sea — no support

Why: It took the question to ask who or what does it. It chose option 2 with score 7, the only option with support. Its support: lesson 30, line 5: «To guess what happens when one living thing disappears, follow the arrows: what it ate will grow in number, what ate it will go hungry and must switch food, sh…», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+4); the same doer «thing» (+3). · 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 eye of a hurricane.

1. It is calm, the strongest winds blowing in the surrounding wall of cloud — ← Mova's choice · ✓ the right answer · no support
2. It contains the strongest winds of the entire storm — no support
3. It is the point at which the tornado touches the ground — no support
4. It is the location of the storm surge — 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 · wrong ✗

Ascertain the designation given in the north-west Pacific to the storm termed a hurricane in the Atlantic.

1. A monsoon — ← Mova's choice · no support
2. A tornado — no support
3. A cyclone — no support
4. A typhoon — ✓ 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

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/world/68-storms-and-wild-winds/