---
title: A thin stream of water from the tap bends towards a rubbed comb. Wha… — Static electricity: balloons, hair and… · tree and pragmatics
description: A thin stream of water from the tap bends towards a rubbed comb. What does this show? Test 2 of lesson 26 «Static electricity: balloons, hair and sparks» of the physics course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was righ
---

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# Test 2 · Static electricity: balloons, hair and sparks

<!-- .ven lang=en -->
A thin stream of water from the tap bends towards a rubbed comb. What does this show?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** thin stream, this · **What happens:** bend, rub, show · **To what, where:** rubbed comb

<!-- .vabout -->
This is test 2 of lesson 26 «Static electricity: balloons, hair and sparks» of the physics 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/physics/26-static-electricity-balloons-hair-and-sparks/#t2).

## The question {#question}

<!-- .note -->
*Sentence 1:* A thin stream of water from the tap bends towards a rubbed comb.

```conllu
# sent_id = question:physics:26-static-electricity-balloons-hair-and-sparks:t2:1
# text = A thin stream of water from the tap bends towards a rubbed comb.
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	thin	thin	ADJ	JJ	Degree=Pos	3	amod	_	_
3	stream	stream	NOUN	NN	Number=Sing	9	nsubj	_	_
4	of	of	ADP	IN	_	5	case	_	_
5	water	water	NOUN	NN	Number=Sing	3	nmod	_	_
6	from	from	ADP	IN	_	8	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	tap	tap	NOUN	NN	Number=Sing	3	nmod	_	_
9	bends	bend	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
10	towards	towards	ADP	IN	_	13	case	_	_
11	a	a	DET	DT	Definite=Ind|PronType=Art	13	det	_	_
12	rubbed	rub	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	13	amod	_	_
13	comb	comb	NOUN	NN	Number=Sing	9	obl	_	SpaceAfter=No
14	.	.	PUNCT	.	_	9	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **bend** | present | a thin stream of water from the tap |  |  | a rubbed comb |  |  | vn meander-47.7-1 «NP V PP.location»: agent=Theme towards comb=Location |
| 2 | **rub** | participle |  |  |  |  |  |  | vn spray-9.7-1 «NP V PP.destination»: 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.

<!-- .note -->
*Sentence 2:* What does this show?

```conllu
# sent_id = question:physics:26-static-electricity-balloons-hair-and-sparks:t2:2
# text = What does this show?
1	What	what	PRON	WP	PronType=Int	4	obj	_	_
2	does	do	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux	_	_
3	this	this	PRON	DT	Number=Sing|PronType=Dem	4	nsubj	_	_
4	show	show	VERB	VB	VerbForm=Inf	0	root	_	SpaceAfter=No
5	?	?	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **show** | present · do-support | this |  |  |  |  |  | vn transfer\_mesg-37.1.1-1-1 «NP V NP.recipient»: agent=Agent what=Recipient |

## The options {#options}

### Option 1 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
The charged comb pulls on the water

```conllu
# sent_id = question:physics:26-static-electricity-balloons-hair-and-sparks:t2:o1:1
# text = The charged comb pulls on the water
1	The	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
2	charged	charge	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	amod	_	_
3	comb	comb	NOUN	NN	Number=Sing	4	nsubj	_	_
4	pulls	pull	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	on	on	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	water	water	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **charge** | participle |  |  |  |  |  |  | vn run-51.3.2 «NP V»: agent=Theme |
| 2 | **pull** | present | the charged comb |  |  |  |  | on the water | vn push-12-1 «NP V PP-Conative»: agent=Agent on water=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
The water has partly frozen into ice

```conllu
# sent_id = question:physics:26-static-electricity-balloons-hair-and-sparks:t2:o2:1
# text = The water has partly frozen into ice
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	water	water	NOUN	NN	Number=Sing	5	nsubj:pass	_	_
3	has	have	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	aux	_	_
4	partly	partly	ADV	RB	_	5	advmod	_	_
5	frozen	freeze	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
6	into	into	ADP	IN	_	7	case	_	_
7	ice	ice	NOUN	NN	Number=Sing	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **freeze** | present · perfect · passive |  | the water |  | ice |  | partly *property* | vn other\_cos-45.4-1 «NP V NP ADJ»: subject=Result |

### Option 3 {#o3}

<!-- .ven lang=en -->
The comb blows a little air at the water

```conllu
# sent_id = question:physics:26-static-electricity-balloons-hair-and-sparks:t2:o3:1
# text = The comb blows a little air at the water
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	comb	comb	NOUN	NN	Number=Sing	3	nsubj	_	_
3	blows	blow	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
5	little	little	ADJ	JJ	Degree=Pos	6	amod	_	_
6	air	air	NOUN	NN	Number=Sing	3	obj	_	_
7	at	at	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	water	water	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **blow** | present | the comb | a little air |  | the water |  |  | vn split-23.2 «NP V NP apart»: agent=Agent air=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
The comb has turned into a small magnet

```conllu
# sent_id = question:physics:26-static-electricity-balloons-hair-and-sparks:t2:o4:1
# text = The comb has turned into a small magnet
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	comb	comb	NOUN	NN	Number=Sing	4	nsubj:pass	_	_
3	has	have	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux	_	_
4	turned	turn	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	into	into	ADP	IN	_	8	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
7	small	small	ADJ	JJ	Degree=Pos	8	amod	_	_
8	magnet	magnet	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **turn** | present · perfect · passive |  | the comb |  | a small magnet |  |  | vn roll-51.3.1 «NP V NP PP.trajectory»: subject=Theme into magnet=Trajectory |

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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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