---
title: Sound travels about one kilometre in 3 seconds through air. — Thinking like a scientist: the body and physics · tree and pragmatics
description: Sound travels about one kilometre in 3 seconds through air. Who acts: Sound. A sentence of the lesson «Thinking like a scientist: the body and physics» of the world course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# Thinking like a scientist: the body and physics, sentence 15

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Sound travels about one kilometre in 3 seconds through air.

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**Who acts:** Sound · **What happens:** travel · **To what, where:** air

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This is a sentence of the lesson «Thinking like a scientist: the body and physics» of the world course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Sound), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:world:040-body-and-physics-reasoning.lesson:15
# text = Sound travels about one kilometre in 3 seconds through air.
# source = school lesson (ours)
# course = world
# lesson = 040-body-and-physics-reasoning.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×2
1	Sound	sound	NOUN	NN	Number=Sing	2	nsubj	_	_
2	travels	travel	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	about	about	ADV	RB	_	4	advmod	_	Agree=R5-strong|Haiku=5:case|HaikuPos=ADP:IN:_
4	one	one	NUM	CD	NumForm=Word|NumType=Card	5	nummod	_	_
5	kilometre	kilometre	NOUN	NN	Number=Sing	1	obl	_	_
6	in	in	ADP	IN	_	8	case	_	_
7	3	3	NUM	CD	NumForm=Digit|NumType=Card	8	nummod	_	_
8	seconds	second	NOUN	NNS	Number=Plur	1	obl	_	_
9	through	through	ADP	IN	_	10	case	_	_
10	air	air	NOUN	NN	Number=Sing	2	obl	_	Agree=R5-strong|Haiku=8:nmod
11	.	.	PUNCT	.	_	2	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **travel** | present | Sound |  |  | air |  |  | vn run-51.3.2-1 «NP V PP.location»: agent=Theme through air=Trajectory |

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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.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:world:040-body-and-physics-reasoning.lesson:15`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×2. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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