---
title: no worries, thunder's like 20 seconds after the flash, storm's miles… — Thunder, sirens and how fast sound tra… · tree and pragmatics
description: no worries, thunder's like 20 seconds after the flash, storm's miles off yeah? Test 1 · ★ 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 wrong.
---

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# Test 1 · ★ · Thunder, sirens and how fast sound travels

<!-- .ven lang=en -->
no worries, thunder's like 20 seconds after the flash, storm's miles off yeah?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 3 · wrong ✗ · **Who acts:** thunder · **What happens:** be · **To what, where:** worries

<!-- .vabout -->
This is test 1 · ★ 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/#t1).

## The question {#question}

```conllu
# sent_id = question:physics:18-thunder-sirens-and-how-fast-sound-travels:t1:1
# text = no worries, thunder's like 20 seconds after the flash, storm's miles off yeah?
1	no	no	DET	DT	PronType=Neg	2	det	_	_
2	worries	worry	NOUN	NNS	Number=Plur	0	root	_	SpaceAfter=No
3	,	,	PUNCT	,	_	8	punct	_	_
4	thunder	thunder	NOUN	NN	Number=Sing	8	nsubj	_	SpaceAfter=No
5	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	cop	_	_
6	like	like	ADP	IN	_	8	case	_	_
7	20	20	NUM	CD	NumForm=Digit|NumType=Card	8	nummod	_	_
8	seconds	second	NOUN	NNS	Number=Plur	2	acl:relcl	_	_
9	after	after	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	flash	flash	NOUN	NN	Number=Sing	8	nmod	_	SpaceAfter=No
12	,	,	PUNCT	,	_	15	punct	_	_
13	storm	storm	NOUN	NN	Number=Sing	15	nmod:poss	_	SpaceAfter=No
14	's	's	PART	POS	_	13	case	_	_
15	miles	mile	NOUN	NNS	Number=Plur	2	conj	_	_
16	off	off	ADP	IN	_	17	case	_	_
17	yeah	yeah	INTJ	UH	_	15	discourse	_	SpaceAfter=No
18	?	?	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | thunder | no worries and storm's miles *not said here* |  |  | after the flash | like 20 seconds | 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 -->
No, it means the storm is right overhead

```conllu
# sent_id = question:physics:18-thunder-sirens-and-how-fast-sound-travels:t1:o1:1
# text = No, it means the storm is right overhead
1	No	no	INTJ	UH	Polarity=Neg	4	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	4	nsubj	_	_
4	means	mean	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	storm	storm	NOUN	NN	Number=Sing	9	nsubj	_	_
7	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	cop	_	_
8	right	right	ADJ	JJ	Degree=Pos	9	amod	_	_
9	overhead	overhead	NOUN	NN	Number=Sing	4	ccomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **mean** | present | it |  |  |  |  |  | vn intend-61.2-1 «NP V S»: agent=Agent |
| 2 | **is a** | present | the storm | right overhead |  |  |  |  | tree rules |

### Option 2 · ← Mova's choice {#o2}

<!-- .ven lang=en -->
Yes, 20 seconds means hundreds of kilometres

```conllu
# sent_id = question:physics:18-thunder-sirens-and-how-fast-sound-travels:t1:o2:1
# text = Yes, 20 seconds means hundreds of kilometres
1	Yes	yes	INTJ	UH	Polarity=Pos	5	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	20	20	NUM	CD	NumForm=Digit|NumType=Card	4	nummod	_	_
4	seconds	second	NOUN	NNS	Number=Plur	5	nsubj	_	_
5	means	mean	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	hundreds	hundred	NOUN	NNS	Number=Plur	5	obj	_	_
7	of	of	ADP	IN	_	8	case	_	_
8	kilometres	kilometre	NOUN	NNS	Number=Plur	6	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **mean** | present | 20 seconds | hundreds of kilometres |  |  |  |  | vn intend-61.2-1 «NP V NP»: agent=Agent hundred=Topic |

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

<!-- .ven lang=en -->
No, that is only about seven kilometres, still close enough to be careful

<!-- fold The tree, 13 words -->
```conllu
# sent_id = question:physics:18-thunder-sirens-and-how-fast-sound-travels:t1:o3:1
# text = No, that is only about seven kilometres, still close enough to be careful
1	No	no	INTJ	UH	Polarity=Neg	8	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	8	punct	_	_
3	that	that	PRON	DT	Number=Sing|PronType=Dem	8	nsubj	_	_
4	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	cop	_	_
5	only	only	ADV	RB	_	7	advmod	_	_
6	about	about	ADV	RB	_	7	advmod	_	_
7	seven	seven	NUM	CD	NumForm=Word|NumType=Card	8	nummod	_	_
8	kilometres	kilometre	NOUN	NNS	Number=Plur	0	root	_	SpaceAfter=No
9	,	,	PUNCT	,	_	11	punct	_	_
10	still	still	ADV	RB	_	11	advmod	_	_
11	close	close	ADJ	JJ	Degree=Pos	8	conj	_	_
12	enough	enough	ADV	RB	_	11	advmod	_	_
13	to	to	PART	TO	_	15	mark	_	_
14	be	be	AUX	VB	VerbForm=Inf	15	cop	_	_
15	careful	careful	ADJ	JJ	Degree=Pos	11	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | that | seven kilometres |  |  |  |  | tree rules |
| 2 | **be** |  | that *not said here* |  |  |  | still | enough *property* | tree rules |
| 3 | **is** | to-infinitive | that *not said here* |  |  |  |  | careful *property* | tree rules |

### Option 4 {#o4}

<!-- .ven lang=en -->
Yes, thunder after 5 seconds is safe

```conllu
# sent_id = question:physics:18-thunder-sirens-and-how-fast-sound-travels:t1:o4:1
# text = Yes, thunder after 5 seconds is safe
1	Yes	yes	INTJ	UH	Polarity=Pos	3	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	thunder	thunder	NOUN	NN	Number=Sing	8	nsubj	_	_
4	after	after	ADP	IN	_	6	case	_	_
5	5	5	NUM	CD	NumForm=Digit|NumType=Card	6	nummod	_	_
6	seconds	second	NOUN	NNS	Number=Plur	3	nmod	_	_
7	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	cop	_	_
8	safe	safe	ADJ	JJ	Degree=Pos	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | thunder after 5 seconds |  |  |  |  | safe *property* | tree rules |

<!-- div src -->

**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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- ← previous: [What sound is: wobbles in the air, exam 4](https://md.mova.elamur.ai/free/en/corpora/questions/physics/17-what-sound-is-wobbles-in-the-air/e4/)
- next →: [Thunder, sirens and how fast sound tra…, test 2](https://md.mova.elamur.ai/free/en/corpora/questions/physics/18-thunder-sirens-and-how-fast-sound-travels/t2/)
- ↑ back to [Thunder, sirens and how fast sound travels](https://md.mova.elamur.ai/free/en/corpora/questions/physics/18-thunder-sirens-and-how-fast-sound-travels/)