The Moon, the planets and the stars

Tests: 3 of 11 right · Exam: 3 of 4 right · Kind: ★★ · Understood: 8 of 15 · Run: 2026-10-18, commit f3c23ea72

Lesson 14 of the myths 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 Sun turned into a black hole of the same mass tomorrow, what would happen to the Earth's orbit?

1. The Earth would be sucked in at once — no support
2. It wouldn't change, though it would get dark and cold — ← Mova's choice · ✓ the right answer · score 2
3. The Earth would fly straight off into deep space, out of orbit — score 0
4. The orbit would become twice as fast — score 2

Why: It took the question to ask what happens next. It chose option 2 with score 2, tied with another option at 2 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 14, line 16: «A black hole's pull, from far away, is the same as any object of the same mass, so only things that come very close fall in; if the Sun became a black hole of…», reached through what followed the sentence the question matched. What matched: the same action «change» (+4). Against it: a different doer (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 2 · ★★ · wrong ✗

"Mercury's closest to the Sun so it's DEFINITELY hottest, no question." What's a kind answer?

1. "You're thick, it's obviously Mars." — ← Mova's choice · no support
2. "Planets don't have temperatures." — no support
3. "Yeah, no question at all." — no support
4. "I'd guess that too! But Venus wins because of its thick air." — ✓ 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 3 · ★★ · right ✓

Ruby's mum learned nine planets at school and is cross about Pluto. What's fair to say?

1. Scientists changed the definition in 2006, and some still argue — ← Mova's choice · ✓ the right answer · no support
2. Her school taught her lies on purpose — no support
3. Pluto was never real — no support
4. Pluto will be made a planet again next year, scientists promised — 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 4 · ★★ · wrong ✗

In a dark room, you shine a lamp at a ball and walk around it. What do you see?

1. The ball changes size — ← Mova's choice · score 8
2. The ball is lit only on the lamp's side, like Moon phases — ✓ the right answer · score 0
3. The ball goes dark when you look — no support
4. The ball glows all over by itself — no support

Why: It took the question to ask what it is done to. It chose option 1 with score 8, against 0 for the next best. Its support: lesson 14, line 13: «The Moon looks bigger near the horizon, but a photo or a coin at arm's length shows it's the same size; scientists still debate exactly why our brains see it s…», 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 thing acted on «same size» (+3); a different doer (counts against) (+1). The right option, 2, scored 0. · the question and its options parsed, with trees and pragmatics

Test 5 · ★★ · wrong ✗

An astronaut on the Space Station looks at stars. What would she notice?

1. They look green — ← Mova's choice · score 5
2. They twinkle even more — score 5
3. They don't twinkle, because there's no air to bend the light — ✓ the right answer · score 5
4. They blink on and off — score 5

Why: It took the question to ask what it is done to. 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 14, line 3: «The night sky is full of myths like that, because we see everything from very far away: shooting stars that look like falling stars, the famous North Star that…», reached through the option's own match among the sentences about the question's things. What matched: the same doer «stars» (+3); the same action «look» (+2). The right option, 3, scored 5. · the question and its options parsed, with trees and pragmatics

Test 6 · ★★ · wrong ✗

Lucy's sister wants to wish on a falling star. What's the nicest true thing to say?

1. Wishes only work on planets — no support
2. It's a space pebble burning up, but make a wish anyway! — ✓ the right answer · score 5
3. Hide, it might land on us — no support
4. Don't wish, it's a real star crashing down to Earth right now — ← Mova's choice · score 8

Why: It took the question to ask what it is done to. It chose option 4 with score 8, against 5 for the next best. Its support: lesson 14, line 3: «The night sky is full of myths like that, because we see everything from very far away: shooting stars that look like falling stars, the famous North Star that…», 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 thing acted on «famous north star» (+3); a different doer (counts against) (+1). The right option, 2, scored 5. · the question and its options parsed, with trees and pragmatics

Test 7 · ★★ · wrong ✗

"Saturn's the only one with rings, everyone knows." Which word is the clue to check?

1. "Only" — ✓ the right answer · no support
2. "Rings" — ← Mova's choice · score 8
3. "Saturn" — no support
4. "Everyone" — no support

Why: It took the question to ask what it is done to. It chose option 2 with score 8, the only option with support. Its support: lesson 14, line 14: «Saturn is not the only planet with rings: Jupiter, Uranus and Neptune have faint rings too.», 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 thing acted on «faint rings» (+3); 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 8 · ★★ · right ✓

Phoebe reads her horoscope every morning. What's a wise view?

1. It's fine to enjoy it, but it isn't science — ← Mova's choice · ✓ the right answer · score 8
2. Astronomers write horoscopes, so they must be right — score -1
3. She should be banned from reading it every morning — no support
4. Horoscopes are astronomy, so they're always true — score 7

Why: It took the question to ask what it is done to. It chose option 1 with score 8, against 7 for the next best. Its support: lesson 14, line 5: «And you can enjoy the stories while knowing the science: make a wish on a shooting star, read your horoscope for fun, and still know which is astronomy.», 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 thing acted on «science» (+3); a different doer (counts against) (+1). · the question and its options parsed, with trees and pragmatics

Test 9 · ★★ · wrong ✗

At the horizon the Moon looks huge; high up it looks small. How could you test it tonight?

1. Measure it with a ruler held on the window glass each night — ← Mova's choice · no support
2. Compare it with a coin held at arm's length, low and high — ✓ the right answer · no support
3. Ask the Moon to stay still — no support
4. Take a photo of only the low Moon — 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 ✗

A cartoon shows a black hole sucking in every star in the galaxy, like a drain. What's wrong?

1. Black holes don't have any gravity — ← Mova's choice · no support
2. From far away it pulls like any object of the same mass — ✓ the right answer · no support
3. Nothing, that's exactly what they do to every star near or far — no support
4. Black holes push things away — 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 · ★★ · wrong ✗

Your scout leader says Polaris is the brightest star. What's the wise correction?

1. "Polaris doesn't exist." — no support
2. "The Moon is the brightest star." — ← Mova's choice · score 8
3. "You're a rubbish scout leader." — no support
4. "It's the most useful, but Sirius is brighter!" — ✓ the right answer · score 5

Why: It took the question to ask what it is done to. It chose option 2 with score 8, against 5 for the next best. Its support: lesson 14, line 8: «Polaris, the North Star, is not the brightest star; Sirius is the brightest star in the night sky, and Polaris is useful because it stays almost still above th…», 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 thing acted on «brightest star» (+3); a different doer (counts against) (+1). The right option, 4, scored 5. · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · right ✓

Which of the following statements most accurately characterises the illumination of the far side of the Moon?

1. It remains in perpetual darkness — no support
2. It receives sunlight to the same extent as the near side — ← Mova's choice · ✓ the right answer · score 3
3. It is illuminated solely during lunar eclipses — no support
4. It is illuminated solely by light reflected from the Earth — no support

Why: It took the question to ask who or what does it. It chose option 2 with score 3, the only option with support. Its support: lesson 14, line 6: «The far side of the Moon gets as much sunlight as the near side; "dark" meant unknown, and the far side was first photographed by the Soviet Luna 3 in 1959.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «much sunlight» (+2); the same circumstance (+2). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · right ✓

Identify the planet of the solar system possessing the highest surface temperature, together with the reason.

1. Venus, owing to its dense atmosphere which retains heat — ← Mova's choice · ✓ the right answer · no support
2. Mercury, owing to its proximity to the Sun, the source of heat — no support
3. Mars, owing to its red colouration — no support
4. Jupiter, owing to its great size — 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 · wrong ✗

Select the response that is consistent with the established facts concerning the phenomenon commonly termed a shooting star.

1. Stars detached from their fixed positions in the sky and falling to Earth — ← Mova's choice · no support
2. Light reflected from artificial satellites — no support
3. Small fragments of rock and dust consumed by heat in the atmosphere — ✓ the right answer · no support
4. Distant stars undergoing explosion — 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 ✓

Ascertain the source of the light by which the Moon is observed.

1. Sunlight reflected from its surface — ← Mova's choice · ✓ the right answer · no support
2. Light emitted by its volcanic activity — no support
3. Light generated within its own interior — no support
4. Light received from distant stars alone — 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/myths/14-the-moon-the-planets-and-the-stars/