---
title: Identify the principal process whereby a rubber balloon acquires an… — Static electricity: balloons, hair and… · tree and pragmatics
description: Identify the principal process whereby a rubber balloon acquires an electric charge upon being rubbed against hair. Exam question 1 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
---

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# Exam question 1 · Static electricity: balloons, hair and sparks

<!-- .ven lang=en -->
Identify the principal process whereby a rubber balloon acquires an electric charge upon being rubbed against hair.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** you, rubber balloon · **What happens:** identify, acquire, rub · **To what, where:** principal process, electric charge, hair

<!-- .vabout -->
This is exam question 1 of lesson 26 «Static electricity: balloons, hair and sparks» of the physics 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/physics/26-static-electricity-balloons-hair-and-sparks/#e1).

## The question {#question}

```conllu
# sent_id = question:physics:26-static-electricity-balloons-hair-and-sparks:e1:1
# text = Identify the principal process whereby a rubber balloon acquires an electric charge upon being rubbed against hair.
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	process	process	NOUN	NN	Number=Sing	1	obj	_	_
5	whereby	whereby	ADV	WRB	PronType=Int	9	advmod	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
7	rubber	rubber	NOUN	NN	Number=Sing	8	compound	_	_
8	balloon	balloon	NOUN	NN	Number=Sing	9	nsubj	_	_
9	acquires	acquire	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	1	advcl	_	_
10	an	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
11	electric	electric	ADJ	JJ	Degree=Pos	12	amod	_	_
12	charge	charge	NOUN	NN	Number=Sing	9	obj	_	_
13	upon	upon	SCONJ	IN	_	15	mark	_	_
14	being	be	AUX	VBG	Tense=Pres|VerbForm=Part	15	aux:pass	_	_
15	rubbed	rub	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	12	acl	_	_
16	against	against	ADP	IN	_	17	case	_	_
17	hair	hair	NOUN	NN	Number=Sing	15	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 process |  |  |  |  | vn characterize-29.2-1-1 «NP V NP S\_ING»: agent=Agent process=Theme |
| 2 | **acquire** | present | a rubber balloon | a electric charge |  |  |  | whereby *property* | vn obtain-13.5.2-1 «NP.asset V NP»: agent=Asset charge=Theme |
| 3 | **rub** | gerund · passive |  | a electric charge *not said here* |  | hair |  |  | vn spray-9.7-1 «NP V PP.destination»: against hair=Destination |

<!-- .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 -->
The creation of new charge within the rubber by the heat of friction

```conllu
# sent_id = question:physics:26-static-electricity-balloons-hair-and-sparks:e1:o1:1
# text = The creation of new charge within the rubber by the heat of friction
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	creation	creation	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	5	case	_	_
4	new	new	ADJ	JJ	Degree=Pos	5	amod	_	_
5	charge	charge	NOUN	NN	Number=Sing	2	nmod	_	_
6	within	within	ADP	IN	_	8	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	rubber	rubber	NOUN	NN	Number=Sing	5	nmod	_	_
9	by	by	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	heat	heat	NOUN	NN	Number=Sing	8	nmod	_	_
12	of	of	ADP	IN	_	13	case	_	_
13	friction	friction	NOUN	NN	Number=Sing	11	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **create** |  |  | new charge within the rubber by the heat of friction |  |  |  |  | nom creation «act transitive»: of=patient |
| 2 | **heat** |  | friction |  |  |  |  |  | nom heat «phenomenon intransitive»: of=agent |

### Option 2 {#o2}

<!-- .ven lang=en -->
The absorption of air by the hair

```conllu
# sent_id = question:physics:26-static-electricity-balloons-hair-and-sparks:e1:o2:1
# text = The absorption of air by the hair
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	absorption	absorption	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	4	case	_	_
4	air	air	NOUN	NN	Number=Sing	2	nmod	_	_
5	by	by	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	hair	hair	NOUN	NN	Number=Sing	2	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **absorb** |  | the hair | air |  |  |  |  | nom absorption «process transitive»: of=patient by=agent |

### Option 3 {#o3}

<!-- .ven lang=en -->
The magnetisation of the rubber

```conllu
# sent_id = question:physics:26-static-electricity-balloons-hair-and-sparks:e1:o3:1
# text = The magnetisation of the rubber
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	magnetisation	magnetisation	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	5	case	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	rubber	rubber	NOUN	NN	Number=Sing	2	nmod	_	_
```

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

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

<!-- .ven lang=en -->
The transfer of electrons from the hair to the balloon

```conllu
# sent_id = question:physics:26-static-electricity-balloons-hair-and-sparks:e1:o4:1
# text = The transfer of electrons from the hair to the balloon
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	transfer	transfer	NOUN	NN	Number=Sing	0	root	_	_
3	of	of	ADP	IN	_	4	case	_	_
4	electrons	electron	NOUN	NNS	Number=Plur	2	nmod	_	_
5	from	from	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	hair	hair	NOUN	NN	Number=Sing	4	nmod	_	_
8	to	to	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	balloon	balloon	NOUN	NN	Number=Sing	7	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **transfer** |  |  | electrons from the hair to the balloon |  |  |  |  | nom transfer «act transitive»: of=patient |

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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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- ← previous: [Static electricity: balloons, hair and…, test 11](https://md.mova.elamur.ai/free/en/corpora/questions/physics/26-static-electricity-balloons-hair-and-sparks/t11/)
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