---
title: Why are picnic cool boxes made with a thick layer of foam? — Materials and their properties · tree and pragmatics
description: Why are picnic cool boxes made with a thick layer of foam? Test 5 · ★★ of lesson 18 «Materials and their properties» of the world 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 5 · ★★ · Materials and their properties

<!-- .ven lang=en -->
Why are picnic cool boxes made with a thick layer of foam?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **What happens:** be, make · **To what, where:** picnic cool boxes

<!-- .vabout -->
This is test 5 · ★★ of lesson 18 «Materials and their properties» of the world 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/world/18-materials-and-properties/#t5).

## The question {#question}

```conllu
# sent_id = question:world:18-materials-and-properties:t5:1
# text = Why are picnic cool boxes made with a thick layer of foam?
1	Why	why	ADV	WRB	PronType=Int	5	advmod	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
3	picnic	picnic	NOUN	NN	Number=Sing	5	compound	_	_
4	cool	cool	ADJ	JJ	Degree=Pos	5	amod	_	_
5	boxes	box	NOUN	NNS	Number=Plur	0	root	_	_
6	made	make	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	5	acl	_	_
7	with	with	ADP	IN	_	10	case	_	_
8	a	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
9	thick	thick	ADJ	JJ	Degree=Pos	10	amod	_	_
10	layer	layer	NOUN	NN	Number=Sing	6	obl	_	_
11	of	of	ADP	IN	_	12	case	_	_
12	foam	foam	NOUN	NN	Number=Sing	10	nmod	_	SpaceAfter=No
13	?	?	PUNCT	.	_	5	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present |  | picnic cool boxes |  |  |  |  | tree rules |
| 2 | **make** | participle |  | picnic cool boxes *not said here* |  |  |  | with a thick layer of foam | vn build-26.1-1 «NP.asset V NP»: agent=Asset |

<!-- .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 {#o1}

<!-- .ven lang=en -->
Foam is heavy and holds the lid down

```conllu
# sent_id = question:world:18-materials-and-properties:t5:o1:1
# text = Foam is heavy and holds the lid down
1	Foam	foam	NOUN	NN	Number=Sing	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	heavy	heavy	ADJ	JJ	Degree=Pos	0	root	_	_
4	and	and	CCONJ	CC	_	5	cc	_	_
5	holds	hold	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	lid	lid	NOUN	NN	Number=Sing	5	obj	_	_
8	down	down	ADP	RP	_	5	compound:prt	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Foam |  |  |  |  | heavy *property* | tree rules |
| 2 | **hold down** | present | Foam *not said here* | the lid |  |  |  |  | vn keep-15.2 «NP V NP»: agent=Agent lid=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
Foam lets heat through quickly

```conllu
# sent_id = question:world:18-materials-and-properties:t5:o2:1
# text = Foam lets heat through quickly
1	Foam	foam	NOUN	NN	Number=Sing	2	nsubj	_	_
2	lets	let	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	heat	heat	NOUN	NN	Number=Sing	2	obj	_	_
4	through	through	ADV	RB	_	2	advmod	_	_
5	quickly	quickly	ADV	RB	_	2	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **let** | present | Foam | heat |  |  |  | quickly, through *property* | vn give-13.1-1 «NP V NP»: agent=Agent heat=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
Foam makes cold of its own

```conllu
# sent_id = question:world:18-materials-and-properties:t5:o3:1
# text = Foam makes cold of its own
1	Foam	foam	NOUN	NN	Number=Sing	2	nsubj	_	_
2	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	cold	cold	ADJ	JJ	Degree=Pos	2	xcomp	_	_
4	of	of	ADP	IN	_	6	case	_	_
5	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	6	nmod:poss	_	_
6	own	own	ADJ	JJ	Degree=Pos	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | Foam |  |  |  |  | cold *property* | vn build-26.1-1 «NP.asset V NP»: agent=Asset |

### Option 4 · ✓ the right answer {#o4}

<!-- .ven lang=en -->
Foam is full of trapped air and insulates

```conllu
# sent_id = question:world:18-materials-and-properties:t5:o4:1
# text = Foam is full of trapped air and insulates
1	Foam	foam	NOUN	NN	Number=Sing	3	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	full	full	ADJ	JJ	Degree=Pos	0	root	_	_
4	of	of	ADP	IN	_	6	case	_	_
5	trapped	trap	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	6	amod	_	_
6	air	air	NOUN	NN	Number=Sing	3	obl	_	_
7	and	and	CCONJ	CC	_	8	cc	_	_
8	insulates	insulate	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Foam |  |  |  |  | of trapped air; full *property* | tree rules |
| 2 | **trap** | participle |  |  |  |  |  |  | vn trick-59.2 «NP V NP»: agent=Agent |
| 3 | **insulate** | present | Foam *not said here* |  |  |  |  |  | vn butter-9.9 «NP V NP.destination»: agent=Agent |

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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: [Materials and their properties, test 4](https://md.mova.elamur.ai/free/en/corpora/questions/world/18-materials-and-properties/t4/)
- next →: [Materials and their properties, test 6](https://md.mova.elamur.ai/free/en/corpora/questions/world/18-materials-and-properties/t6/)
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