---
title: What would happen to a pond in winter if ice sank instead of floating? — Melting, freezing, boiling and condens… · tree and pragmatics
description: What would happen to a pond in winter if ice sank instead of floating? Test 2 · ★ of lesson 5 «Melting, freezing, boiling and condensing» of the chemistry 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 2 · ★ · Melting, freezing, boiling and condensing

<!-- .ven lang=en -->
What would happen to a pond in winter if ice sank instead of floating?

<!-- .vintro -->
**Mova's choice:** option 3 · **The right answer:** option 1 · wrong ✗ · **Who acts:** ice · **What happens:** happen, sink, float

<!-- .vabout -->
This is test 2 · ★ of lesson 5 «Melting, freezing, boiling and condensing» of the chemistry 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/chemistry/5-melting-freezing-boiling-condensing/#t2).

## The question {#question}

```conllu
# sent_id = question:chemistry:5-melting-freezing-boiling-condensing:t2:1
# text = What would happen to a pond in winter if ice sank instead of floating?
1	What	what	PRON	WP	PronType=Int	3	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	3	aux	_	_
3	happen	happen	VERB	VB	VerbForm=Inf	0	root	_	_
4	to	to	ADP	IN	_	6	case	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
6	pond	pond	NOUN	NN	Number=Sing	3	obl	_	_
7	in	in	ADP	IN	_	8	case	_	_
8	winter	winter	NOUN	NN	Number=Sing	3	obl	_	_
9	if	if	SCONJ	IN	_	11	mark	_	_
10	ice	ice	NOUN	NN	Number=Sing	11	nsubj	_	_
11	sank	sink	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	3	advcl	_	_
12	instead	instead	ADV	RB	ExtPos=SCONJ	14	mark	_	_
13	of	of	ADP	IN	_	12	fixed	_	_
14	floating	float	VERB	VBG	Tense=Pres|VerbForm=Part	11	advcl	_	SpaceAfter=No
15	?	?	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **happen** | would |  |  |  |  | winter | to a pond | vn occur-48.3-1 «NP V»: agent=Theme |
| 2 | **sink** *a condition, not said to happen* | past | ice |  |  |  |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |
| 3 | **float** | gerund | ice *not said here* |  |  |  |  |  | vn run-51.3.2-2 «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 · ✓ the right answer {#o1}

<!-- .ven lang=en -->
It could freeze from the bottom up, and fish would be in danger

```conllu
# sent_id = question:chemistry:5-melting-freezing-boiling-condensing:t2:o1:1
# text = It could freeze from the bottom up, and fish would be in danger
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj	_	_
2	could	could	AUX	MD	VerbForm=Fin	3	aux	_	_
3	freeze	freeze	VERB	VB	VerbForm=Inf	0	root	_	_
4	from	from	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	bottom	bottom	NOUN	NN	Number=Sing	3	obl	_	_
7	up	up	ADP	RP	_	3	compound:prt	_	SpaceAfter=No
8	,	,	PUNCT	,	_	14	punct	_	_
9	and	and	CCONJ	CC	_	14	cc	_	_
10	fish	fish	NOUN	NN	Number=Sing	14	nsubj	_	_
11	would	would	AUX	MD	VerbForm=Fin	14	aux	_	_
12	be	be	AUX	VB	VerbForm=Inf	14	cop	_	_
13	in	in	ADP	IN	_	14	case	_	_
14	danger	danger	NOUN	NN	Number=Sing	3	parataxis	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **freeze up** | could | It |  |  | the bottom |  |  | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |
| 2 | **is** | would | fish |  |  | danger |  |  | tree rules |

### Option 2 {#o2}

<!-- .ven lang=en -->
Nothing, ponds never freeze

```conllu
# sent_id = question:chemistry:5-melting-freezing-boiling-condensing:t2:o2:1
# text = Nothing, ponds never freeze
1	Nothing	nothing	PRON	NN	Number=Sing|PronType=Neg	0	root	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	ponds	pond	NOUN	NNS	Number=Plur	5	nsubj	_	_
4	never	never	ADV	RB	PronType=Neg	5	advmod	_	_
5	freeze	freeze	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	1	acl:relcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **not** **freeze** | present | ponds |  |  |  |  |  | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |

### Option 3 · ← Mova's choice {#o3}

<!-- .ven lang=en -->
The ice would melt at once

```conllu
# sent_id = question:chemistry:5-melting-freezing-boiling-condensing:t2:o3:1
# text = The ice would melt at once
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	ice	ice	NOUN	NN	Number=Sing	4	nsubj	_	_
3	would	would	AUX	MD	VerbForm=Fin	4	aux	_	_
4	melt	melt	VERB	VB	VerbForm=Inf	0	root	_	_
5	at	at	ADP	IN	_	6	case	_	_
6	once	once	ADV	RB	NumForm=Word|NumType=Mult	4	obl	_	_
```

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

### Option 4 {#o4}

<!-- .ven lang=en -->
Fish would be much warmer in winter, under a thick blanket of ice

```conllu
# sent_id = question:chemistry:5-melting-freezing-boiling-condensing:t2:o4:1
# text = Fish would be much warmer in winter, under a thick blanket of ice
1	Fish	fish	NOUN	NNS	Number=Plur	5	nsubj	_	_
2	would	would	AUX	MD	VerbForm=Fin	5	aux	_	_
3	be	be	AUX	VB	VerbForm=Inf	5	cop	_	_
4	much	much	ADV	RB	_	5	advmod	_	_
5	warmer	warm	ADJ	JJR	Degree=Cmp	0	root	_	_
6	in	in	ADP	IN	_	7	case	_	_
7	winter	winter	NOUN	NN	Number=Sing	5	obl	_	SpaceAfter=No
8	,	,	PUNCT	,	_	12	punct	_	_
9	under	under	ADP	IN	_	12	case	_	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
11	thick	thick	ADJ	JJ	Degree=Pos	12	amod	_	_
12	blanket	blanket	NOUN	NN	Number=Sing	5	obl	_	_
13	of	of	ADP	IN	_	14	case	_	_
14	ice	ice	NOUN	NN	Number=Sing	12	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | would | Fish |  |  | a thick blanket of ice | winter | warm *property* | tree rules |

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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.

<!-- /div -->

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