---
title: Select the response consistent with the established facts concerning… — Compasses and the magnetic Earth · tree and pragmatics
description: Select the response consistent with the established facts concerning the aurora. Exam question 4 of lesson 30 «Compasses and the magnetic Earth» of the physics course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was wrong.
---

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# Exam question 4 · Compasses and the magnetic Earth

<!-- .ven lang=en -->
Select the response consistent with the established facts concerning the aurora.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** you, established facts · **What happens:** select, establish, concern · **To what, where:** response, aurora

<!-- .vabout -->
This is exam question 4 of lesson 30 «Compasses and the magnetic Earth» of the physics course of Mova's primary school, asked in stiff, formal language. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/physics/30-compasses-and-the-magnetic-earth/#e4).

## The question {#question}

```conllu
# sent_id = question:physics:30-compasses-and-the-magnetic-earth:e4:1
# text = Select the response consistent with the established facts concerning the aurora.
1	Select	select	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	response	response	NOUN	NN	Number=Sing	1	obj	_	_
4	consistent	consistent	ADJ	JJ	Degree=Pos	1	xcomp	_	_
5	with	with	ADP	IN	_	8	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
7	established	establish	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	8	amod	_	_
8	facts	fact	NOUN	NNS	Number=Plur	4	obl	_	_
9	concerning	concern	VERB	VBG	VerbForm=Ger	8	acl	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	aurora	aurora	NOUN	NN	Number=Sing	9	obj	_	SpaceAfter=No
12	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **select** | imperative | you *not said here* | the response |  |  |  | consistent *property* | vn obtain-13.5.2 «NP V NP»: agent=Agent response=Theme |
| 2 | **establish** | participle |  |  |  |  |  |  | vn indicate-78-1-1 «NP V NP to be NP»: agent=Pivot |
| 3 | **concern** | gerund | the established facts *not said here* | the aurora |  |  |  |  | vn amuse-31.1 «NP V NP»: agent=Stimulus aurora=Experiencer |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
Distant lightning illuminates the night sky

```conllu
# sent_id = question:physics:30-compasses-and-the-magnetic-earth:e4:o1:1
# text = Distant lightning illuminates the night sky
1	Distant	distant	ADJ	JJ	Degree=Pos	2	amod	_	_
2	lightning	lightning	NOUN	NN	Number=Sing	3	nsubj	_	_
3	illuminates	illuminate	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
5	night	night	NOUN	NN	Number=Sing	6	compound	_	_
6	sky	sky	NOUN	NN	Number=Sing	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **illuminate** | present | Distant lightning | the night sky |  |  |  |  | vn illustrate-25.3 «NP V NP»: agent=Agent sky=Destination |

### Option 2 {#o2}

<!-- .ven lang=en -->
Moonlight is reflected from the polar ice upon the clouds

```conllu
# sent_id = question:physics:30-compasses-and-the-magnetic-earth:e4:o2:1
# text = Moonlight is reflected from the polar ice upon the clouds
1	Moonlight	moonlight	NOUN	NN	Number=Sing	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	reflected	reflect	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	from	from	ADP	IN	_	7	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
6	polar	polar	ADJ	JJ	Degree=Pos	7	amod	_	_
7	ice	ice	NOUN	NN	Number=Sing	3	obl	_	_
8	upon	upon	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	clouds	cloud	NOUN	NNS	Number=Plur	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **reflect** | present · passive |  | Moonlight |  | the polar ice |  | upon the clouds | tree rules |

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
Charged particles from the Sun are guided towards the poles and cause the upper air to glow

<!-- fold The tree, 17 words -->
```conllu
# sent_id = question:physics:30-compasses-and-the-magnetic-earth:e4:o3:1
# text = Charged particles from the Sun are guided towards the poles and cause the upper air to glow
1	Charged	charge	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	2	amod	_	_
2	particles	particle	NOUN	NNS	Number=Plur	7	nsubj:pass	_	_
3	from	from	ADP	IN	_	5	case	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	Sun	Sun	PROPN	NNP	Number=Sing	2	nmod	_	_
6	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	7	aux:pass	_	_
7	guided	guide	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
8	towards	towards	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	poles	pole	NOUN	NNS	Number=Plur	7	obl	_	_
11	and	and	CCONJ	CC	_	12	cc	_	_
12	cause	cause	VERB	VB	VerbForm=Inf	7	conj	_	_
13	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
14	upper	upper	ADJ	JJ	Degree=Pos	15	amod	_	_
15	air	air	NOUN	NN	Number=Sing	12	obj	_	_
16	to	to	PART	TO	_	17	mark	_	_
17	glow	glow	VERB	VB	VerbForm=Inf	15	acl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **charge** | participle |  |  |  |  |  |  | vn run-51.3.2 «NP V»: agent=Theme |
| 2 | **guide** | present · passive |  | Charged particles from the Sun |  | the poles |  |  | vn accompany-51.7 «NP V NP PP.destination»: subject=Theme towards pole=Destination |
| 3 | **cause** | infinitive |  | the upper air |  |  |  |  | vn engender-27.1-1 «NP V NP»: agent=Precondition air=Patient |
| 4 | **glow** | to-infinitive |  | the upper air *not said here* |  |  |  |  | vn light\_emission-43.1 «NP V»: agent=Theme |

### Option 4 {#o4}

<!-- .ven lang=en -->
The cold polar air emits light of its own accord

```conllu
# sent_id = question:physics:30-compasses-and-the-magnetic-earth:e4:o4:1
# text = The cold polar air emits light of its own accord
1	The	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
2	cold	cold	ADJ	JJ	Degree=Pos	4	amod	_	_
3	polar	polar	ADJ	JJ	Degree=Pos	4	amod	_	_
4	air	air	NOUN	NN	Number=Sing	5	nsubj	_	_
5	emits	emit	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	light	light	NOUN	NN	Number=Sing	5	obj	_	_
7	of	of	ADP	IN	_	10	case	_	_
8	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	10	nmod:poss	_	_
9	own	own	ADJ	JJ	Degree=Pos	10	amod	_	_
10	accord	accord	NOUN	NN	Number=Sing	6	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **emit** | present | the cold polar air | light of air's own accord |  |  |  |  | vn substance\_emission-43.4 «NP V NP»: agent=Source light=Theme |
| 2 | **light** |  |  | air's own accord |  |  |  |  | nom light «phenomenon transitive»: of=patient |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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