---
title: Light travels much faster than sound. — Thinking like a scientist: the body and physics · tree and pragmatics
description: Light travels much faster than sound. Who acts: Light. 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 14

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Light travels much faster than sound.

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**Who acts:** Light · **What happens:** travel

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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 (Light), 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:14
# text = Light travels much faster than sound.
# 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 ×1, R6-punct-agree ×1
1	Light	light	NOUN	NN	Number=Sing	2	nsubj	_	_
2	travels	travel	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	much	much	ADV	RB	_	4	advmod	_	_
4	faster	fast	ADV	RBR	Degree=Cmp	2	advmod	_	_
5	than	than	ADP	IN	_	6	case	_	_
6	sound	sound	NOUN	NN	Number=Sing	4	obl	_	Agree=R5-strong|Haiku=2:obl
7	.	.	PUNCT	.	_	2	punct	_	Agree=R6-punct-agree|Haiku=4:punct
```

## Pragmatics {#pragmatics}

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- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **travel** | present | Light |  |  |  |  | fast *property* | vn run-51.3.2-1 «NP V»: agent=Theme |

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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:14`.

**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 ×1, R6-punct-agree ×1. **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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