---
title: Identify the principal reason for which a full glass bottle of water… — Keeping cold: fridges, freezers and he… · tree and pragmatics
description: Identify the principal reason for which a full glass bottle of water may crack within a freezer. Exam question 2 of lesson 10 «Keeping cold: fridges, freezers and heat pumps» of the technology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option
---

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# Exam question 2 · Keeping cold: fridges, freezers and heat pumps

<!-- .ven lang=en -->
Identify the principal reason for which a full glass bottle of water may crack within a freezer.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** you, full glass bottle · **What happens:** identify, crack · **To what, where:** principal reason

<!-- .vabout -->
This is exam question 2 of lesson 10 «Keeping cold: fridges, freezers and heat pumps» of the technology course of Mova's primary school, asked in stiff, formal language. 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/technology/10-keeping-cold-fridges-freezers-and-heat-pumps/#e2).

## The question {#question}

```conllu
# sent_id = question:technology:10-keeping-cold-fridges-freezers-and-heat-pumps:e2:1
# text = Identify the principal reason for which a full glass bottle of water may crack within a freezer.
1	Identify	identify	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	principal	principal	ADJ	JJ	Degree=Pos	4	amod	_	_
4	reason	reason	NOUN	NN	Number=Sing	1	obj	_	_
5	for	for	ADP	IN	_	6	case	_	_
6	which	which	PRON	WDT	PronType=Rel	14	obl	_	_
7	a	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
8	full	full	ADJ	JJ	Degree=Pos	10	amod	_	_
9	glass	glass	NOUN	NN	Number=Sing	10	compound	_	_
10	bottle	bottle	NOUN	NN	Number=Sing	14	nsubj	_	_
11	of	of	ADP	IN	_	12	case	_	_
12	water	water	NOUN	NN	Number=Sing	10	nmod	_	_
13	may	may	AUX	MD	VerbForm=Fin	14	aux	_	_
14	crack	crack	VERB	VB	VerbForm=Inf	4	acl	_	_
15	within	within	ADP	IN	_	17	case	_	_
16	a	a	DET	DT	Definite=Ind|PronType=Art	17	det	_	_
17	freezer	freezer	NOUN	NN	Number=Sing	14	obl	_	SpaceAfter=No
18	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **identify** | imperative | you *not said here* | the principal reason |  |  |  |  | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent reason=Theme |
| 2 | **crack** | may | a full glass bottle of water |  |  |  |  | for the principal reason; within a freezer | vn sound\_emission-43.2 «NP 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 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
Water expands upon freezing

```conllu
# sent_id = question:technology:10-keeping-cold-fridges-freezers-and-heat-pumps:e2:o1:1
# text = Water expands upon freezing
1	Water	water	NOUN	NN	Number=Sing	2	nsubj	_	_
2	expands	expand	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	upon	upon	ADP	IN	_	4	case	_	_
4	freezing	freezing	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **expand** | present | Water |  |  |  |  | upon freezing | vn other\_cos-45.4 «NP.patient V»: agent=Patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
Ice is heavier than glass

```conllu
# sent_id = question:technology:10-keeping-cold-fridges-freezers-and-heat-pumps:e2:o2:1
# text = Ice is heavier than glass
1	Ice	ice	NOUN	NN	Number=Sing	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	heavier	heavy	ADJ	JJR	Degree=Cmp	0	root	_	_
4	than	than	ADP	IN	_	5	case	_	_
5	glass	glass	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Ice |  |  |  |  | than glass; heavy *property* | tree rules |

### Option 3 {#o3}

<!-- .ven lang=en -->
The freezer compresses all its contents

```conllu
# sent_id = question:technology:10-keeping-cold-fridges-freezers-and-heat-pumps:e2:o3:1
# text = The freezer compresses all its contents
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	freezer	freezer	NOUN	NN	Number=Sing	3	nsubj	_	_
3	compresses	compress	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	all	all	DET	PDT	PronType=Tot	6	det:predet	_	_
5	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	6	nmod:poss	_	_
6	contents	contents	NOUN	NNS	Number=Ptan	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **compress** | present | the freezer | freezer's contents |  |  |  |  | vn bend-45.2 «NP V NP.patient»: agent=Agent contents=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
Glass contracts to nothing at low temperatures

```conllu
# sent_id = question:technology:10-keeping-cold-fridges-freezers-and-heat-pumps:e2:o4:1
# text = Glass contracts to nothing at low temperatures
1	Glass	glass	NOUN	NN	Number=Sing	2	compound	_	_
2	contracts	contract	NOUN	NNS	Number=Plur	0	root	_	_
3	to	to	ADP	IN	_	4	case	_	_
4	nothing	nothing	PRON	NN	Number=Sing|PronType=Neg	2	nmod	_	_
5	at	at	ADP	IN	_	7	case	_	_
6	low	low	ADJ	JJ	Degree=Pos	7	amod	_	_
7	temperatures	temperature	NOUN	NNS	Number=Plur	4	nmod	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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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.

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- ← previous: [Keeping cold: fridges, freezers and he…, exam 1](https://md.mova.elamur.ai/free/en/corpora/questions/technology/10-keeping-cold-fridges-freezers-and-heat-pumps/e1/)
- next →: [Keeping cold: fridges, freezers and he…, exam 3](https://md.mova.elamur.ai/free/en/corpora/questions/technology/10-keeping-cold-fridges-freezers-and-heat-pumps/e3/)
- ↑ back to [Keeping cold: fridges, freezers and heat pumps](https://md.mova.elamur.ai/free/en/corpora/questions/technology/10-keeping-cold-fridges-freezers-and-heat-pumps/)