---
title: Why does a telescope with a bigger lens show fainter stars? — Lenses and eyes · tree and pragmatics
description: Why does a telescope with a bigger lens show fainter stars? Test 7 · ★★ of lesson 22 «Lenses and eyes» 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 wrong.
---

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# Test 7 · ★★ · Lenses and eyes

<!-- .ven lang=en -->
Why does a telescope with a bigger lens show fainter stars?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **What happens:** do, show · **To what, where:** telescope, fainter stars

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This is test 7 · ★★ of lesson 22 «Lenses and eyes» 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/22-lenses-and-eyes/#t7).

## The question {#question}

```conllu
# sent_id = question:physics:22-lenses-and-eyes:t7:1
# text = Why does a telescope with a bigger lens show fainter stars?
1	Why	why	ADV	WRB	PronType=Int	2	advmod	_	_
2	does	do	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	advcl	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	telescope	telescope	NOUN	NN	Number=Sing	2	obj	_	_
5	with	with	ADP	IN	_	8	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
7	bigger	big	ADJ	JJR	Degree=Cmp	8	amod	_	_
8	lens	lens	NOUN	NN	Number=Sing	9	obl	_	_
9	show	show	VERB	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	0	root	_	_
10	fainter	faint	ADJ	JJR	Degree=Cmp	11	amod	_	_
11	stars	star	NOUN	NNS	Number=Plur	9	obj	_	SpaceAfter=No
12	?	?	PUNCT	.	_	9	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **do** | present |  | a telescope |  |  |  |  | vn act-114-1 «NP V NP»: agent=Agent telescope=Eventuality |
| 2 | **show** | present |  | fainter stars |  |  |  | with a bigger lens | vn transfer\_mesg-37.1.1-1-1 «NP V NP.recipient»: agent=Agent star=Recipient |

<!-- .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 -->
A bigger lens makes stars hotter

```conllu
# sent_id = question:physics:22-lenses-and-eyes:t7:o1:1
# text = A bigger lens makes stars hotter
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	bigger	big	ADJ	JJR	Degree=Cmp	3	amod	_	_
3	lens	lens	NOUN	NN	Number=Sing	4	nsubj	_	_
4	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	stars	star	NOUN	NNS	Number=Plur	4	obj	_	_
6	hotter	hot	ADJ	JJR	Degree=Cmp	4	xcomp	_	_
```

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

### Option 2 {#o2}

<!-- .ven lang=en -->
A bigger lens brings stars closer

```conllu
# sent_id = question:physics:22-lenses-and-eyes:t7:o2:1
# text = A bigger lens brings stars closer
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	bigger	big	ADJ	JJR	Degree=Cmp	3	amod	_	_
3	lens	lens	NOUN	NN	Number=Sing	4	nsubj	_	_
4	brings	bring	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	stars	star	NOUN	NNS	Number=Plur	4	obj	_	_
6	closer	close	ADJ	RBR	Degree=Pos	4	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **bring** | present | a bigger lens | stars |  |  |  | close *property* | vn bring-11.3-1 «NP V NP together»: agent=Agent star=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
A bigger lens shines light on the stars

```conllu
# sent_id = question:physics:22-lenses-and-eyes:t7:o3:1
# text = A bigger lens shines light on the stars
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	bigger	big	ADJ	JJR	Degree=Cmp	3	amod	_	_
3	lens	lens	NOUN	NN	Number=Sing	4	nsubj	_	_
4	shines	shine	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	light	light	NOUN	NN	Number=Sing	4	obj	_	_
6	on	on	ADP	IN	_	8	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	stars	star	NOUN	NNS	Number=Plur	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **shine** | present | a bigger lens | light |  | the stars |  |  | vn light\_emission-43.1 «NP V NP.theme»: agent=Agent light=Theme |

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

<!-- .ven lang=en -->
A bigger lens catches more light

```conllu
# sent_id = question:physics:22-lenses-and-eyes:t7:o4:1
# text = A bigger lens catches more light
1	A	a	DET	DT	Definite=Ind|PronType=Art	3	det	_	_
2	bigger	big	ADJ	JJR	Degree=Cmp	3	amod	_	_
3	lens	lens	NOUN	NN	Number=Sing	4	nsubj	_	_
4	catches	catch	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	more	more	ADJ	JJR	Degree=Cmp	6	amod	_	_
6	light	light	NOUN	NN	Number=Sing	4	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **catch** | present | a bigger lens | more light |  |  |  |  | vn get-13.5.1 «NP V NP»: agent=Agent light=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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- ← previous: [Lenses and eyes, test 6](https://md.mova.elamur.ai/free/en/corpora/questions/physics/22-lenses-and-eyes/t6/)
- next →: [Lenses and eyes, test 8](https://md.mova.elamur.ai/free/en/corpora/questions/physics/22-lenses-and-eyes/t8/)
- ↑ back to [Lenses and eyes](https://md.mova.elamur.ai/free/en/corpora/questions/physics/22-lenses-and-eyes/)