---
title: Why do foxes and rabbits have big ears that turn? — Thunder, sirens and how fast sound tra… · tree and pragmatics
description: Why do foxes and rabbits have big ears that turn? Test 5 · ★ of lesson 18 «Thunder, sirens and how fast sound travels» 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 right.
---

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# Test 5 · ★ · Thunder, sirens and how fast sound travels

<!-- .ven lang=en -->
Why do foxes and rabbits have big ears that turn?

<!-- .vintro -->
**Mova's choice:** option 4 · **The right answer:** option 4 · right ✓ · **Who acts:** foxes, big ears · **What happens:** do, have, turn · **To what, where:** big ears

<!-- .vabout -->
This is test 5 · ★ of lesson 18 «Thunder, sirens and how fast sound travels» of the physics 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/physics/18-thunder-sirens-and-how-fast-sound-travels/#t5).

## The question {#question}

```conllu
# sent_id = question:physics:18-thunder-sirens-and-how-fast-sound-travels:t5:1
# text = Why do foxes and rabbits have big ears that turn?
1	Why	why	ADV	WRB	PronType=Int	2	advmod	_	_
2	do	do	VERB	VBP	Mood=Ind|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	6	advcl	_	_
3	foxes	fox	NOUN	NNS	Number=Plur	6	nsubj	_	_
4	and	and	CCONJ	CC	_	5	cc	_	_
5	rabbits	rabbit	NOUN	NNS	Number=Plur	3	conj	_	_
6	have	have	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	big	big	ADJ	JJ	Degree=Pos	8	amod	_	_
8	ears	ear	NOUN	NNS	Number=Plur	6	obj	_	_
9	that	that	PRON	WDT	PronType=Rel	10	nsubj	_	_
10	turn	turn	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	8	acl:relcl	_	SpaceAfter=No
11	?	?	PUNCT	.	_	6	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **do** | present | foxes and rabbits *not said here* |  |  |  |  |  | vn act-114-1 «NP V»: agent=Agent |
| 2 | **have** | present | foxes and rabbits | big ears |  |  |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent ear=Patient |
| 3 | **turn** | present | big ears |  |  |  |  |  | vn roll-51.3.1 «NP.theme V»: agent=Theme |

<!-- .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 -->
Big ears are only there for showing off to others

```conllu
# sent_id = question:physics:18-thunder-sirens-and-how-fast-sound-travels:t5:o1:1
# text = Big ears are only there for showing off to others
1	Big	big	ADJ	JJ	Degree=Pos	2	amod	_	_
2	ears	ear	NOUN	NNS	Number=Plur	5	nsubj	_	_
3	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
4	only	only	ADV	RB	_	5	advmod	_	_
5	there	there	ADV	RB	PronType=Dem	0	root	_	_
6	for	for	SCONJ	IN	_	7	mark	_	_
7	showing	show	VERB	VBG	Tense=Pres|VerbForm=Part	5	advcl	_	_
8	off	off	ADP	RP	_	7	compound:prt	_	_
9	to	to	ADP	IN	_	10	case	_	_
10	others	other	NOUN	NNS	Number=Plur	7	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Big ears |  |  |  |  | there *property* | tree rules |
| 2 | **show off** | gerund | Big ears *not said here* |  | others |  |  |  | vn transfer\_mesg-37.1.1-1-1 «NP V PP.recipient how S»: agent=Agent to other=Recipient |

### Option 2 {#o2}

<!-- .ven lang=en -->
Big ears help them to run along much faster

```conllu
# sent_id = question:physics:18-thunder-sirens-and-how-fast-sound-travels:t5:o2:1
# text = Big ears help them to run along much faster
1	Big	big	ADJ	JJ	Degree=Pos	2	amod	_	_
2	ears	ear	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	help	help	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	3	obj	_	_
5	to	to	PART	TO	_	6	mark	_	_
6	run	run	VERB	VB	VerbForm=Inf	3	xcomp	_	_
7	along	along	ADV	RB	_	6	advmod	_	_
8	much	much	ADV	RB	_	9	advmod	_	_
9	faster	fast	ADV	RBR	Degree=Cmp	6	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **help** | present | Big ears | them *= they* |  |  |  |  | vn help-72.1-1-1 «NP V NP S\_INF»: agent=Agent they=Beneficiary clause=Theme |
| 2 | **run along** | to-infinitive | them *= they* *not said here* |  |  |  |  | along, fast *property* | vn run-51.3.2-2-1 «NP V»: agent=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
Big ears keep them warm out in the cold snow

```conllu
# sent_id = question:physics:18-thunder-sirens-and-how-fast-sound-travels:t5:o3:1
# text = Big ears keep them warm out in the cold snow
1	Big	big	ADJ	JJ	Degree=Pos	2	amod	_	_
2	ears	ear	NOUN	NNS	Number=Plur	3	nsubj	_	_
3	keep	keep	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	3	obj	_	_
5	warm	warm	VERB	VB	VerbForm=Inf	3	xcomp	_	_
6	out	out	ADP	RP	_	5	compound:prt	_	_
7	in	in	ADP	IN	_	10	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
9	cold	cold	ADJ	JJ	Degree=Pos	10	amod	_	_
10	snow	snow	NOUN	NN	Number=Sing	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **keep** | present | Big ears | them *= they* |  |  |  |  | tree rules |
| 2 | **warm out** | infinitive | them *= they* *not said here* |  |  | the cold snow |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |

### Option 4 · ← Mova's choice · ✓ the right answer {#o4}

<!-- .ven lang=en -->
They gather more sound from where it comes

```conllu
# sent_id = question:physics:18-thunder-sirens-and-how-fast-sound-travels:t5:o4:1
# text = They gather more sound from where it comes
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	2	nsubj	_	_
2	gather	gather	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	more	more	ADJ	JJR	Degree=Cmp	4	amod	_	_
4	sound	sound	NOUN	NN	Number=Sing	2	obj	_	_
5	from	from	SCONJ	IN	_	8	mark	_	_
6	where	where	ADV	WRB	PronType=Rel	8	advmod	_	_
7	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	8	nsubj	_	_
8	comes	come	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **gather** | present | They | more sound |  |  |  |  | vn deduce-97.2 «NP V NP»: agent=Agent sound=Theme |
| 2 | **come** | present | sound |  |  |  |  |  | vn escape-51.1-1 «NP V»: agent=Theme |

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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.

<!-- /div -->

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