---
title: Why do astronauts on the space station exercise about two hours a day? — Muscles and joints by name: biceps, tr… · tree and pragmatics
description: Why do astronauts on the space station exercise about two hours a day? Test 9 · ★★★ of lesson 360 «Muscles and joints by name: biceps, triceps, knees, elbows and the busiest muscles» of the biology course of Mova's primary school, with the dependency tree and pragmatics of the question and of each o
---

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# Test 9 · ★★★ · Muscles and joints by name: biceps, triceps, knees, elbows…

<!-- .ven lang=en -->
Why do astronauts on the space station exercise about two hours a day?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 2 · wrong ✗ · **What happens:** do · **To what, where:** astronauts, station exercise

<!-- .vabout -->
This is test 9 · ★★★ of lesson 360 «Muscles and joints by name: biceps, triceps, knees, elbows and the busiest muscles» of the biology 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/biology/360-muscles-and-joints-by-name-biceps-triceps-knees-elbows-and-the-busiest-muscles/#t9).

## The question {#question}

```conllu
# sent_id = question:biology:360-muscles-and-joints-by-name-biceps-triceps-knees-elbows-and-the-busiest-muscles:t9:1
# text = Why do astronauts on the space station exercise about two hours a day?
1	Why	why	ADV	WRB	PronType=Int	2	advmod	_	_
2	do	do	VERB	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	0	root	_	_
3	astronauts	astronaut	NOUN	NNS	Number=Plur	2	obj	_	_
4	on	on	ADP	IN	_	8	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
6	space	space	NOUN	NN	Number=Sing	7	compound	_	_
7	station	station	NOUN	NN	Number=Sing	8	compound	_	_
8	exercise	exercise	NOUN	NN	Number=Sing	3	nmod	_	_
9	about	about	ADV	RB	_	10	advmod	_	_
10	two	two	NUM	CD	NumForm=Word|NumType=Card	11	nummod	_	_
11	hours	hour	NOUN	NNS	Number=Plur	8	obl:unmarked	_	_
12	a	a	DET	DT	Definite=Ind|PronType=Art	13	det	_	_
13	day	day	NOUN	NN	Number=Sing	11	nmod:unmarked	_	SpaceAfter=No
14	?	?	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **do** | present |  | astronauts |  | the station exercise |  |  | vn act-114-1 «NP V NP»: agent=Agent astronaut=Eventuality |

<!-- .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 -->
They are training for races on Earth

```conllu
# sent_id = question:biology:360-muscles-and-joints-by-name-biceps-triceps-knees-elbows-and-the-busiest-muscles:t9:o1:1
# text = They are training for races on Earth
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	3	nsubj	_	_
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	aux	_	_
3	training	train	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	_	_
4	for	for	ADP	IN	_	5	case	_	_
5	races	race	NOUN	NNS	Number=Plur	3	obl	_	_
6	on	on	ADP	IN	_	7	case	_	_
7	Earth	Earth	PROPN	NNP	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **train** | present · progressive | They |  |  | Earth |  | for races | vn hire-13.5.3 «NP V NP»: agent=Agent |

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

<!-- .ven lang=en -->
Without gravity to work against, their muscles would waste away

```conllu
# sent_id = question:biology:360-muscles-and-joints-by-name-biceps-triceps-knees-elbows-and-the-busiest-muscles:t9:o2:1
# text = Without gravity to work against, their muscles would waste away
1	Without	without	ADP	IN	_	2	case	_	_
2	gravity	gravity	NOUN	NN	Number=Sing	10	obl	_	_
3	to	to	PART	TO	_	4	mark	_	_
4	work	work	VERB	VB	VerbForm=Inf	2	acl	_	_
5	against	against	ADP	IN	_	4	obl	_	SpaceAfter=No
6	,	,	PUNCT	,	_	2	punct	_	_
7	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	8	nmod:poss	_	_
8	muscles	muscle	NOUN	NNS	Number=Plur	10	nsubj	_	_
9	would	would	AUX	MD	VerbForm=Fin	10	aux	_	_
10	waste	waste	VERB	VB	VerbForm=Inf	0	root	_	_
11	away	away	ADV	RB	_	10	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **work** | to-infinitive | their muscles *not said here* |  |  |  |  |  | vn employment-95.3 «NP V»: agent=Agent |
| 2 | **waste away** | would | their muscles |  |  |  |  | without gravity; away *property* | vn destroy-44 «NP V NP»: agent=Agent |

### Option 3 {#o3}

<!-- .ven lang=en -->
Exercise makes air to breathe

```conllu
# sent_id = question:biology:360-muscles-and-joints-by-name-biceps-triceps-knees-elbows-and-the-busiest-muscles:t9:o3:1
# text = Exercise makes air to breathe
1	Exercise	exercise	NOUN	NN	Number=Sing	2	nsubj	_	_
2	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	air	air	NOUN	NN	Number=Sing	2	obj	_	_
4	to	to	PART	TO	_	5	mark	_	_
5	breathe	breathe	VERB	VB	VerbForm=Inf	2	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | Exercise | air |  |  |  |  | tree rules |
| 2 | **breathe** | to-infinitive | air *not said here* |  |  |  |  |  | vn breathe-40.1.2-1 «NP V»: agent=Agent |

### Option 4 {#o4}

<!-- .ven lang=en -->
Exercise keeps the station warm

```conllu
# sent_id = question:biology:360-muscles-and-joints-by-name-biceps-triceps-knees-elbows-and-the-busiest-muscles:t9:o4:1
# text = Exercise keeps the station warm
1	Exercise	exercise	NOUN	NN	Number=Sing	2	nsubj	_	_
2	keeps	keep	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	station	station	NOUN	NN	Number=Sing	2	obj	_	_
5	warm	warm	ADJ	JJ	Degree=Pos	2	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **keep** | present | Exercise | the station |  |  |  | warm *property* | vn keep-15.2 «NP V NP»: agent=Agent station=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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