Day and night

Tests: 6 of 13 right · Exam: 3 of 4 right · Kind: plain · Understood: 6 of 17 · Run: 2026-10-18, commit f3c23ea72

Lesson 1 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 ✓

If the Earth stopped spinning, what would happen to day and night?

1. One side would have a very long day and the other a very long night — ← Mova's choice · ✓ the right answer · no support
2. The days would become much shorter — no support
3. It would be night everywhere at the same time — no support
4. Nothing would change at all — 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 · right ✓

Anna in a dark room shines a torch at a slowly spinning ball with a sticker on it. What happens to the sticker?

1. It stays in the light all the time — no support
2. It lights up only when the ball stops — no support
3. It stays in the shadow all the time — no support
4. It passes into the light and then into the shadow again and again — ← Mova's choice · ✓ the right answer · score 3

Why: It took the question to ask which statement is true. It chose option 4 with score 3, the only option with support. Its support: lesson 1, line 5: «Try it with a torch and a ball in a dark room: spin the ball slowly and watch a sticker on it pass from light into shadow.», reached through the same lesson line as the sentence the question matched. What matched: the same action «pass» (+2); the same place «light» (+2). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 3 · wrong ✗

Which is true?

1. The Sun moves faster in the evening — ← Mova's choice · no support
2. The Sun goes behind the Earth to sleep — no support
3. The Sun seems to move because the Earth turns — ✓ the right answer · no support
4. The Sun really moves across the sky every day — no support

Why: Nothing it remembers matched the question, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 4 · right ✓

Sam sees the Sun setting. Which way is he looking?

1. West — ← Mova's choice · ✓ the right answer · score 6
2. Straight up — score 6
3. East — score 6
4. North — score 6

Why: It took the question to ask a circumstance (with what, when, how). It chose option 1 with score 6, tied with another option at 6 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 1, line 4: «The Sun seems to rise in the east and set in the west because the Earth turns from west to east, the way trees seem to run backwards when you look out of a mov…», reached through the remembered sentence the question matched. What matched: the same action «seem» (+4); the same thing acted on «way» (+4). Against it: a different doer (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 5 · wrong ✗

A friend in a far country is having breakfast while you go to bed. Why?

1. Her country is closer to the Sun than yours — ← Mova's choice · no support
2. The Sun visits her country after yours — no support
3. Her side of the Earth is turning into sunlight while yours turns away — ✓ the right answer · no support
4. Her country has a different Sun — no support

Why: Nothing it remembers matched the question, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 6 · wrong ✗

How many times does a place on the Earth pass from day into night in one week?

1. Once — ← Mova's choice · no support
2. Seven times — ✓ the right answer · no support
3. Twice — no support
4. Fourteen times — 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 · right ✓

Why can you not see stars at noon?

1. The stars move to the other side of the Earth — no support
2. Sunlight lights up the sky and hides them — ← Mova's choice · ✓ the right answer · score 6
3. The Moon hides the stars in the daytime — score 3
4. The stars switch off during the day — score 3

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 6, against 3 for the next best. Its support: lesson 1, line 14: «The stars are in the sky during the day too, but the bright sunlight hides them.», reached through the option's own match among the sentences about the question's things. What matched: the same action «hide» (+2); the same doer «bright sunlight» (+2); the same thing acted on «stars» (+2). · the question and its options parsed, with trees and pragmatics

Test 8 · wrong ✗

Which picture of day and night is right?

1. A ball whose lamp is turned on and off — ← Mova's choice · no support
2. A still ball with a lamp going around it daily — no support
3. A spinning ball lit from one side by a lamp — ✓ the right answer · no support
4. A ball that is lit from all sides at once — no support

Why: Nothing it remembers matched the question, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 9 · wrong ✗

If you stood on the line between the lit and dark halves of the Earth, what would you see?

1. No light at all — ← Mova's choice · no support
2. The Moon covering the Sun — no support
3. The Sun straight above your head — no support
4. The Sun low at the edge of the sky, rising or setting — ✓ 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

Test 10 · wrong ✗

why's the sky go dark at night anyway

1. The Sun goes behind the mountains to rest for the night — ← Mova's choice · no support
2. The Moon blocks the Sun every evening — no support
3. The Sun runs out of light at the end of the day — no support
4. Our side of the Earth has turned away from the Sun — ✓ the right answer · no support

Why: Nothing it remembers matched the question, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 11 · wrong ✗

if its lunch time here wots it like on the other side of the world

1. It's lunch time there too — ← Mova's choice · no support
2. It's the day before there, at lunch time — no support
3. It's about the middle of the night there — ✓ the right answer · no support
4. It's always morning there — 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 12 · right ✓

Leo says the Sun goes round the Earth every day and that's why it gets dark. true?

1. Yes, the Sun circles the Earth once every day — no support
2. Yes, but only in winter does it go round — no support
3. No, the Earth spins and turns us away from the Sun — ← Mova's choice · ✓ the right answer · score 7
4. No, the Moon goes round and covers the Sun — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 7, the only option with support. Its support: lesson 1, line 8: «The half of the Earth turned away from the Sun has night.», reached through the option's own match among the sentences about the question's things. What matched: the same action «turn away» (+2); the same doer «earth» (+2); the same place «sun» (+2); the same property (+1). · the question and its options parsed, with trees and pragmatics

Test 13 · right ✓

my sister reckons the stars only come out at night cos they switch on. right?

1. No, the stars hide under the Earth by day — score 6
2. No, they're there all day but sunlight hides them — ← Mova's choice · ✓ the right answer · score 8
3. Yes, stars turn on when the Sun turns off — no support
4. Yes, stars light up only when it gets dark outside — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 8, against 6 for the next best. Its support: lesson 1, line 14: «The stars are in the sky during the day too, but the bright sunlight hides them.», reached through the remembered sentence the question matched. What matched: the same doer «stars» (+4); the same property (+2); the same light verb (be, have, do, get, go) (+2). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Identify the principal cause of the alternation of day and night upon the Earth.

1. The interposition of the Moon between Earth and Sun — ← Mova's choice · no support
2. The daily revolution of the Sun about the Earth — no support
3. The periodic extinguishing of the Sun's illumination — no support
4. The rotation of the Earth upon its own axis — ✓ the right answer · no support

Why: Nothing it remembers matched the question, 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 ✓

It is given that the Earth completes one rotation upon its axis. State the approximate duration of the said rotation.

1. Twenty-four hours — ← Mova's choice · ✓ the right answer · no support
2. Three hundred and sixty-five days — no support
3. Seven days — no support
4. Twelve hours — 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 ✓

Which of the following statements most accurately characterises the apparent diurnal motion of the Sun?

1. It appears to rise in the west and set in the east — no support
2. It appears to rise in the east and set in the west owing to the Earth's rotation — ← Mova's choice · ✓ the right answer · score 8
3. It moves eastward across the heavens each morning — no support
4. It actually travels from east to west about a stationary Earth — no support

Why: It took the question to ask who or what does it. It chose option 2 with score 8, the only option with support. Its support: lesson 1, line 11: «Because of the turning, the Sun seems to rise in the east and set in the west.», reached through the remembered sentence the question matched. What matched: the same action «rise» (+4); the same place «east» (+4). · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · right ✓

Whereas a given locality experiences midday, ascertain the approximate hour at the diametrically opposite point of the globe.

1. Approximately midnight — ← Mova's choice · ✓ the right answer · no support
2. Likewise midday, at the same hour — no support
3. Late afternoon, before dusk — no support
4. Early morning, about dawn — 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/1-day-and-night/