---
title: Why might a huge dust storm be a problem for a solar-powered rover? — Mars · tree and pragmatics
description: Why might a huge dust storm be a problem for a solar-powered rover? Test 8 · ★ of lesson 8 «Mars» of the space course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Test 8 · ★ · Mars

<!-- .ven lang=en -->
Why might a huge dust storm be a problem for a solar-powered rover?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **Who acts:** huge dust storm · **What happens:** be, power · **To what, where:** problem

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This is test 8 · ★ of lesson 8 «Mars» of the space course of Mova's primary school. 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/space/8-mars/#t8).

## The question {#question}

```conllu
# sent_id = question:space:8-mars:t8:1
# text = Why might a huge dust storm be a problem for a solar-powered rover?
1	Why	why	ADV	WRB	PronType=Int	9	advmod	_	_
2	might	might	AUX	MD	VerbForm=Fin	9	aux	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
4	huge	huge	ADJ	JJ	Degree=Pos	6	amod	_	_
5	dust	dust	NOUN	NN	Number=Sing	6	compound	_	_
6	storm	storm	NOUN	NN	Number=Sing	9	nsubj	_	_
7	be	be	AUX	VB	VerbForm=Inf	9	cop	_	_
8	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	_	_
9	problem	problem	NOUN	NN	Number=Sing	0	root	_	_
10	for	for	ADP	IN	_	15	case	_	_
11	a	a	DET	DT	Definite=Ind|PronType=Art	15	det	_	_
12	solar	solar	ADJ	JJ	Degree=Pos	14	compound	_	SpaceAfter=No
13	-	-	PUNCT	HYPH	_	12	punct	_	SpaceAfter=No
14	powered	power	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	15	amod	_	_
15	rover	rover	NOUN	NN	Number=Sing	9	nmod	_	SpaceAfter=No
16	?	?	PUNCT	.	_	9	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | might | a huge dust storm | a problem |  |  |  | for a powered rover | tree rules |
| 2 | **power** | participle |  |  |  |  |  |  | tree rules |

<!-- .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 {#o1}

<!-- .ven lang=en -->
Dust storms on Mars are made of acid

```conllu
# sent_id = question:space:8-mars:t8:o1:1
# text = Dust storms on Mars are made of acid
1	Dust	dust	NOUN	NN	Number=Sing	2	compound	_	_
2	storms	storm	NOUN	NNS	Number=Plur	6	nsubj:pass	_	_
3	on	on	ADP	IN	_	4	case	_	_
4	Mars	Mars	PROPN	NNP	Number=Sing	2	nmod	_	_
5	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	6	aux:pass	_	_
6	made	make	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
7	of	of	ADP	IN	_	8	case	_	_
8	acid	acid	NOUN	NN	Number=Sing	6	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present · passive |  | Dust storms on Mars |  |  |  | of acid | vn build-26.1-1 «NP.asset V NP»: subject=Product |

### Option 2 · ← Mova's choice · ✓ the right answer {#o2}

<!-- .ven lang=en -->
Dust blocks sunlight and covers its solar panels

```conllu
# sent_id = question:space:8-mars:t8:o2:1
# text = Dust blocks sunlight and covers its solar panels
1	Dust	dust	NOUN	NN	Number=Sing	2	nsubj	_	_
2	blocks	block	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	sunlight	sunlight	NOUN	NN	Number=Sing	2	obj	_	_
4	and	and	CCONJ	CC	_	5	cc	_	_
5	covers	cover	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	conj	_	_
6	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	8	nmod:poss	_	_
7	solar	solar	ADJ	JJ	Degree=Pos	8	amod	_	_
8	panels	panel	NOUN	NNS	Number=Plur	5	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **block** | present | Dust | sunlight |  |  |  |  | vn forbid-64.4-1 «NP V NP»: agent=Causer sunlight=Theme |
| 2 | **cover** | present | Dust *not said here* | Dust's solar panels |  |  |  |  | vn fill-9.8-1 «NP V NP»: agent=Theme panel=Destination |

### Option 3 {#o3}

<!-- .ven lang=en -->
The storm blows the rover to the Moon

```conllu
# sent_id = question:space:8-mars:t8:o3:1
# text = The storm blows the rover to the Moon
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	storm	storm	NOUN	NN	Number=Sing	3	nsubj	_	_
3	blows	blow	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	rover	rover	NOUN	NN	Number=Sing	3	obj	_	_
6	to	to	ADP	IN	_	8	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	Moon	Moon	PROPN	NNP	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **blow** | present | the storm | the rover | the Moon |  |  |  | vn crane-40.3.2 «NP V NP PP.recipient»: agent=Agent rover=Patient to moon=Recipient |

### Option 4 {#o4}

<!-- .ven lang=en -->
Dust makes the rover heavier than a car, so it gets stuck

```conllu
# sent_id = question:space:8-mars:t8:o4:1
# text = Dust makes the rover heavier than a car, so it gets stuck
1	Dust	dust	NOUN	NN	Number=Sing	2	nsubj	_	_
2	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	rover	rover	NOUN	NN	Number=Sing	2	obj	_	_
5	heavier	heavy	ADJ	JJR	Degree=Cmp	2	xcomp	_	_
6	than	than	ADP	IN	_	8	case	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
8	car	car	NOUN	NN	Number=Sing	5	obl	_	SpaceAfter=No
9	,	,	PUNCT	,	_	12	punct	_	_
10	so	so	ADV	RB	_	12	advmod	_	_
11	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	12	nsubj	_	_
12	gets	get	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	parataxis	_	_
13	stuck	stuck	ADJ	JJ	Degree=Pos	12	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | Dust | the rover |  |  |  | heavy *property* | vn build-26.1-1 «NP.asset V NP»: agent=Asset rover=Product |
| 2 | **get** | present | Dust |  |  |  |  | stuck *property* | vn comprehend-87.2-1 «NP V S\_ING»: agent=Experiencer |

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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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