---
title: When coal is burned in a power station, what happens to its energy? — Energy — where it comes from and how t… · tree and pragmatics
description: When coal is burned in a power station, what happens to its energy? Test 6 of lesson 56 «Energy — where it comes from and how to save it» 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 6 · Energy — where it comes from and how to save it

<!-- .ven lang=en -->
When coal is burned in a power station, what happens to its energy?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **Who acts:** power station · **What happens:** burn, happen · **To what, where:** coal, power station

<!-- .vabout -->
This is test 6 of lesson 56 «Energy — where it comes from and how to save it» 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/56-energy/#t6).

## The question {#question}

```conllu
# sent_id = question:world:56-energy:t6:1
# text = When coal is burned in a power station, what happens to its energy?
1	When	when	ADV	WRB	PronType=Int	4	advmod	_	_
2	coal	coal	NOUN	NN	Number=Sing	4	nsubj:pass	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux:pass	_	_
4	burned	burn	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	in	in	ADP	IN	_	8	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
7	power	power	NOUN	NN	Number=Sing	8	compound	_	_
8	station	station	NOUN	NN	Number=Sing	4	obl	_	SpaceAfter=No
9	,	,	PUNCT	,	_	11	punct	_	_
10	what	what	PRON	WP	PronType=Int	11	nsubj	_	_
11	happens	happen	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	acl:relcl	_	_
12	to	to	ADP	IN	_	14	case	_	_
13	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	14	nmod:poss	_	_
14	energy	energy	NOUN	NN	Number=Sing	11	obl	_	SpaceAfter=No
15	?	?	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **burn** | present · passive |  | coal |  | a power station |  |  | vn light\_emission-43.1 «NP V NP.theme»: subject=Theme |
| 2 | **happen** | present | a power station |  |  |  |  | to coal's energy | vn occur-48.3-1 «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 {#o1}

<!-- .ven lang=en -->
It is made bigger by the fire in the boiler

```conllu
# sent_id = question:world:56-energy:t6:o1:1
# text = It is made bigger by the fire in the boiler
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	made	make	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	bigger	big	ADJ	JJR	Degree=Cmp	3	xcomp	_	_
5	by	by	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	fire	fire	NOUN	NN	Number=Sing	3	obl	_	_
8	in	in	ADP	IN	_	10	case	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	boiler	boiler	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present · passive | the fire | It |  | the boiler |  | big *property* | vn build-26.1-1 «NP.asset V NP»: agent=Asset subject=Product |

### Option 2 · ✓ the right answer {#o2}

<!-- .ven lang=en -->
It changes into heat and then electricity

```conllu
# sent_id = question:world:56-energy:t6:o2:1
# text = It changes into heat and then electricity
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	changes	change	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	into	into	ADP	IN	_	4	case	_	_
4	heat	heat	NOUN	NN	Number=Sing	2	obl	_	_
5	and	and	CCONJ	CC	_	7	cc	_	_
6	then	then	ADV	RB	PronType=Dem	7	advmod	_	_
7	electricity	electricity	NOUN	NN	Number=Sing	4	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **change** | present | It |  |  |  |  | into heat and electricity *result* | vn turn-26.6.1-1 «NP.patient V PP.result»: agent=Patient into heat=Result |

### Option 3 {#o3}

<!-- .ven lang=en -->
It turns back into living plants in the soil

```conllu
# sent_id = question:world:56-energy:t6:o3:1
# text = It turns back into living plants in the soil
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	turns	turn	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	back	back	ADV	RB	_	2	advmod	_	_
4	into	into	ADP	IN	_	6	case	_	_
5	living	living	NOUN	NN	Number=Sing	6	compound	_	_
6	plants	plant	NOUN	NNS	Number=Plur	2	obl	_	_
7	in	in	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	soil	soil	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **turn back** | present | It |  |  | living plants |  | in the soil | vn banish-10.2 «NP V NP»: agent=Agent |

### Option 4 {#o4}

<!-- .ven lang=en -->
It disappears completely into the air for ever

```conllu
# sent_id = question:world:56-energy:t6:o4:1
# text = It disappears completely into the air for ever
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	disappears	disappear	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	completely	completely	ADV	RB	_	2	advmod	_	_
4	into	into	ADP	IN	_	6	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	air	air	NOUN	NN	Number=Sing	2	obl	_	_
7	for	for	ADP	IN	_	8	case	_	_
8	ever	ever	ADV	RB	PronType=Ind	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **disappear** | present | It |  |  | the air |  | completely *property* | vn disappearance-48.2-1 «NP V»: agent=Theme |

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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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