---
title: Jupiter — how Mova does on the tests · Space
description: Lesson 10 of the space course of Mova's primary school: 4 of 12 tests right, exam 2 of 4, every question with the options, the student's choice, the right answer and why it chose.
---

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# Jupiter

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**Tests:** 4 of 12 right · **Exam:** 2 of 4 right · **Kind:** ★★★ · **Understood:** 7 of 16 · **Run:** 2026-10-18, commit `f3c23ea72`

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Lesson 10 of the space 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](https://md.mova.elamur.ai/free/en/corpora/school/space/10-jupiter/).

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Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: [the lesson's questions in the corpora](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/).

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### Test 1 · ★★★ · wrong ✗ {#t1}

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Jupiter's a failed star, it nearly became a second Sun, right?

- **1.** Yes, it was a star that burnt out — no support
- **2.** No, it is made of rock, not gas — **← Mova's choice** · score 5
- **3.** Yes, it missed by only a little — no support
- **4.** No, it would need about 80 times more mass to start fusion — **✓ the right answer** · score 3

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**Why:** It took the question to ask which statement is true. It chose option 2 with score 5, against 3 for the next best. Its support: lesson 2, line 17: «Telescopes such as ALMA in Chile have photographed dusty discs around young stars where new planets are forming right now.», reached through the option's own match among the sentences about the question's things. What matched: the same action «form» (+3); the same thing acted on «young stars» (+2). The right option, 4, scored 3. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/t1/)

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### Test 2 · ★★★ · wrong ✗ {#t2}

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In a cartoon, an astronaut lands on Jupiter and plants a flag. What is wrong?

- **1.** The flag would melt in the cold — **← Mova's choice** · no support
- **2.** Jupiter has no solid ground; the gas just gets thicker and hotter — **✓ the right answer** · no support
- **3.** Flags are not allowed in space — no support
- **4.** Nothing, Jupiter has a rocky surface — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/t2/)

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### Test 3 · ★★★ · wrong ✗ {#t3}

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The Earth spins in 24 hours, but Jupiter, which is far bigger, spins in under 10. What does this mean for a point on Jupiter's equator?

- **1.** It does not move at all — **← Mova's choice** · no support
- **2.** It moves far faster than a point on Earth's equator — **✓ the right answer** · no support
- **3.** It moves more slowly than a point on Earth, because it is bigger — no support
- **4.** It moves backwards — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/t3/)

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### Test 4 · ★★★ · wrong ✗ {#t4}

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If the Great Red Spot moved onto the Earth, what would happen?

- **1.** It would fit inside one country — **← Mova's choice** · no support
- **2.** It would cover more than the whole Earth — **✓ the right answer** · no support
- **3.** It would be about the size of a big city like London — no support
- **4.** It would cover only the Moon — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/t4/)

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### Test 5 · ★★★ · wrong ✗ {#t5}

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How many birthdays would a 12-year-old on Earth have had in Jupiter years?

- **1.** About twelve — **← Mova's choice** · no support
- **2.** About one — **✓ the right answer** · no support
- **3.** About a hundred — no support
- **4.** About 144 — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/t5/)

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### Test 6 · ★★★ · wrong ✗ {#t6}

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Why do people call Jupiter a cosmic pinball flipper?

- **1.** Its gravity flings comets and asteroids on new paths — **✓ the right answer** · no support
- **2.** It spins like a ball in a machine — **← Mova's choice** · score 2
- **3.** Its moons knock each other about — no support
- **4.** It bounces light off its rings like the lights in a pinball machine — no support

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**Why:** It took the question to ask why something happens (its cause). It chose option 2 with score 2, the only option with support. Its support: lesson 4, line 1: «Venus is almost exactly the size of the Earth and is our nearest planet, so it is called Earth's twin, but it is a very evil twin.», reached through the cause of the sentence the question matched. What matched: the same circumstance (+4). Against it: a different doer (counts against) (-2). The right option, 1, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/t6/)

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### Test 7 · ★★★ · right ✓ {#t7}

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Jake: "Jupiter protects us, it catches every asteroid!" What is more accurate?

- **1.** It has no effect at all — no support
- **2.** It throws every asteroid at Mars — score 2
- **3.** It flings some away but can send others towards us too — **← Mova's choice** · **✓ the right answer** · score 3
- **4.** He is right, it catches all of them — no support

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**Why:** It took the question to ask which statement is true. It chose option 3 with score 3, against 2 for the next best. Its support: lesson 10, line 5: «Jupiter's huge gravity acts like a pinball flipper for comets and asteroids, sometimes flinging them away from the inner planets and sometimes towards them.», reached through the option's own match among the sentences about the question's things. What matched: the same action «fling away» (+3); the same property (+2). Against it: a different doer (counts against) (-1); a different thing acted on (counts against) (-1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/t7/)

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### Test 8 · ★★★ · right ✓ {#t8}

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In 1994 a comet broke into pieces and crashed into Jupiter. What did telescopes see?

- **1.** Dark scars bigger than the Earth in its clouds — **← Mova's choice** · **✓ the right answer** · no support
- **2.** A crater in its rocky surface — no support
- **3.** Jupiter exploding into rings — no support
- **4.** Nothing, it swallowed them silently without any marks — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/t8/)

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### Test 9 · ★★★ · wrong ✗ {#t9}

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Why do engineers build Jupiter probes with heavy shielding?

- **1.** Its radiation belts are the strongest of any planet — **✓ the right answer** · no support
- **2.** Its auroras are made of fire — **← Mova's choice** · score 2
- **3.** Its gravity crushes thin metal — no support
- **4.** Its rings are made of sharp rocks that cut through metal — no support

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**Why:** It took the question to ask why something happens (its cause). It chose option 2 with score 2, the only option with support. Its support: lesson 1, line 16: «The Earth's magnetic field shields us from most of the solar wind, and particles leaking in near the poles make the aurora, the northern and southern lights; n…», reached through the same lesson line as the sentence the question matched. What matched: the same thing acted on «aurora» (+2); the same action «make» (+1). 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](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/t9/)

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### Test 10 · ★★★ · right ✓ {#t10}

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Saturn has huge bright rings. Does Jupiter have rings too?

- **1.** No, only Saturn has rings — no support
- **2.** Yes, made of liquid metal — no support
- **3.** Yes, faint thin rings of dust, found by Voyager 1 — **← Mova's choice** · **✓ the right answer** · score 7
- **4.** Yes, bigger and brighter than Saturn's, but hidden by clouds — score 6

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**Why:** It took the question to ask which statement is true. It chose option 3 with score 7, against 6 for the next best. Its support: lesson 10, line 15: «Jupiter has faint, thin rings made of dust, discovered by Voyager 1 in 1979.», reached through the remembered sentence the question matched. What matched: the same doer «jupiter» (+4); the same thing acted on «faint thin rings» (+3). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/t10/)

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### Test 11 · ★★★ · wrong ✗ {#t11}

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Why does Jupiter look like a ball of soft stripes and not like a cratered rock?

- **1.** We see only the tops of its clouds, stretched into bands by fast winds — **✓ the right answer** · no support
- **2.** Its craters are painted over by rain — no support
- **3.** It is made of cloth — **← Mova's choice** · score 5
- **4.** Its surface is covered with sand dunes — no support

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**Why:** It took the question to ask why something happens (its cause). It chose option 3 with score 5, the only option with support. Its support: lesson 10, line 6: «Jupiter is the largest planet, about 11 times wider than the Earth and more than twice as massive as all the other planets put together.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «jupiter» (+3); the same thing acted on «largest planet» (+2). The right option, 1, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/t11/)

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### Test 12 · ★★★ · right ✓ {#t12}

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Imagine a lift going down into Jupiter. What would it meet on the way?

- **1.** Ever thicker, hotter gas and then liquid metal hydrogen — **← Mova's choice** · **✓ the right answer** · score 15
- **2.** A rocky floor after a few kilometres — no support
- **3.** Empty space in the middle — no support
- **4.** An ocean of water and then sand — no support

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**Why:** It took the question to ask what it is done to. It chose option 1 with score 15, the only option with support. Its support: lesson 10, line 2: «It is a gas giant made mostly of hydrogen and helium, like the Sun, with no ground to stand on: a spaceship sinking into it would only meet thicker and hotter…», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+6); the same action «meet» (+4); the same thing acted on «thicker gas» (+4); the same property (+3). Against it: a different doer (counts against) (-2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/t12/)

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### Exam question 1 · formal language · right ✓ {#e1}

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Identify the principal constituents of the planet Jupiter.

- **1.** Hydrogen and helium — **← Mova's choice** · **✓ the right answer** · no support
- **2.** Silicate rock and iron — no support
- **3.** Nitrogen and oxygen — no support
- **4.** Water ice and ammonia exclusively — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/e1/)

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### Exam question 2 · formal language · right ✓ {#e2}

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Which of the following statements most accurately characterises the Great Red Spot?

- **1.** A storm of greater width than the Earth, observed for at least one hundred and ninety years — **← Mova's choice** · **✓ the right answer** · no support
- **2.** A satellite of Jupiter of reddish hue — no support
- **3.** A transient storm persisting for some days only — no support
- **4.** An extinct volcano situated upon a solid crust — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/e2/)

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### Exam question 3 · formal language · wrong ✗ {#e3}

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Ascertain the period of rotation of Jupiter about its axis.

- **1.** Approximately twelve years — **← Mova's choice** · no support
- **2.** Approximately two hundred and forty-three days — no support
- **3.** Somewhat less than ten hours — **✓ the right answer** · no support
- **4.** Approximately twenty-four hours — no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/e3/)

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### Exam question 4 · formal language · wrong ✗ {#e4}

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Select the response consistent with the established facts concerning the mass of Jupiter.

- **1.** It is sufficient for nuclear fusion to have commenced — **← Mova's choice** · no support
- **2.** It is equal to that of the Earth — no support
- **3.** It is less than that of Saturn — no support
- **4.** It exceeds twice the combined mass of all other planets — **✓ the right answer** · no support

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**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](https://md.mova.elamur.ai/free/en/corpora/questions/space/10-jupiter/e4/)

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- ← previous: [9. Asteroids and the asteroid belt](https://md.mova.elamur.ai/free/en/school-run/space/9-asteroids-and-the-asteroid-belt/)
- next →: [11. Jupiter's moons](https://md.mova.elamur.ai/free/en/school-run/space/11-jupiters-moons/)
- ↑ back to [Space](https://md.mova.elamur.ai/free/en/school-run/space/)