---
title: Cold gas particles move slower and hit the walls less hard, so tyres… — Gases all around: breath and balloons · tree and pragmatics
description: Cold gas particles move slower and hit the walls less hard, so tyres have lower pressure in cold weather and drivers check them more often in winter. Who acts: Cold gas particles, tyres, drivers. A sentence of the lesson «Gases all around: breath and balloons» of the chemistry course of Mova's prima
---

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# Gases all around: breath and balloons, sentence 19

<!-- .ven lang=en -->
Cold gas particles move slower and hit the walls less hard, so tyres have lower pressure in cold weather and drivers check them more often in winter.

<!-- .vintro -->
**Who acts:** Cold gas particles, tyres, drivers · **What happens:** move, hit, have, check · **To what, where:** walls, lower pressure, cold weather

<!-- .vabout -->
This is a sentence of the lesson «Gases all around: breath and balloons» of the chemistry 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 (Cold gas particles, tyres, drivers), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:020-gases-all-around-breath-and-balloons.lesson:19
# text = Cold gas particles move slower and hit the walls less hard, so tyres have lower pressure in cold weather and drivers check them more often in winter.
# source = school lesson (ours)
# course = chemistry
# lesson = 020-gases-all-around-breath-and-balloons.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, R8-pos-agree ×2
1	Cold	cold	ADJ	JJ	Degree=Pos	3	amod	_	_
2	gas	gas	NOUN	NN	Number=Sing	3	compound	_	_
3	particles	particle	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	move	move	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	slower	slow	ADV	RBR	Degree=Cmp	4	advmod	_	_
6	and	and	CCONJ	CC	_	7	cc	_	_
7	hit	hit	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	Agree=R8-pos-agree|Haiku=4:conj|HaikuPos=VERB:VB:VerbForm=Inf
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	walls	wall	NOUN	NNS	Number=Plur	7	obj	_	_
10	less	less	ADV	RBR	Degree=Cmp	11	advmod	_	_
11	hard	hard	ADV	RB	Degree=Pos	7	advmod	_	_
12	,	,	PUNCT	,	_	15	punct	_	_
13	so	so	ADV	RB	_	15	advmod	_	_
14	tyres	tyre	NOUN	NNS	Number=Plur	15	nsubj	_	_
15	have	have	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	parataxis	_	_
16	lower	low	ADJ	JJR	Degree=Cmp	17	amod	_	_
17	pressure	pressure	NOUN	NN	Number=Sing	15	obj	_	_
18	in	in	ADP	IN	_	20	case	_	_
19	cold	cold	ADJ	JJ	Degree=Pos	20	amod	_	_
20	weather	weather	NOUN	NN	Number=Sing	15	obl	_	Agree=R5-strong|Haiku=17:nmod
21	and	and	CCONJ	CC	_	23	cc	_	_
22	drivers	driver	NOUN	NNS	Number=Plur	23	nsubj	_	_
23	check	check	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	15	conj	_	Agree=R8-pos-agree|Haiku=15:conj|HaikuPos=VERB:VB:VerbForm=Inf
24	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	23	obj	_	_
25	more	more	ADV	RBR	Degree=Cmp	26	advmod	_	_
26	often	often	ADV	RB	_	23	advmod	_	_
27	in	in	ADP	IN	_	28	case	_	_
28	winter	winter	NOUN	NN	Number=Sing	23	obl	_	Agree=R5-strong|Haiku=26:obl
29	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

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

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **move** | present | Cold gas particles |  |  |  |  | slow *property* | vn roll-51.3.1 «NP.theme V»: agent=Theme |
| 2 | **hit** | present | Cold gas particles *not said here* | the walls |  |  |  | hard *property* | vn contiguous\_location-47.8-1 «NP V NP»: agent=Theme wall=Co-Theme |
| 3 | **have** | present | tyres | lower pressure |  | cold weather |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent pressure=Patient |
| 4 | **check** | present | drivers | walls *= wall* |  |  | winter | often *property* | vn assessment-34.1 «NP V NP»: agent=Agent they=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.

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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:chemistry:020-gases-all-around-breath-and-balloons.lesson:19`.

**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, R8-pos-agree ×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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