---
title: Gold-seekers swirl river gravel in a pan of water. The heavy gold st… — Mixtures and how to separate them · tree and pragmatics
description: Gold-seekers swirl river gravel in a pan of water. The heavy gold stays in the pan and the lighter sand washes out. Which property is used? Test 1 · ★★ of lesson 19 «Mixtures and how to separate them» of the world course of Mova's primary school, with the dependency tree and pragmatics of the questi
---

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# Test 1 · ★★ · Mixtures and how to separate them

<!-- .ven lang=en -->
Gold-seekers swirl river gravel in a pan of water. The heavy gold stays in the pan and the lighter sand washes out. Which property is used?

<!-- .vintro -->
**Mova's choice:** option 3 · **The right answer:** option 4 · wrong ✗ · **Who acts:** Gold seekers, heavy gold, lighter sand · **What happens:** swirl, stay, wash out, use · **To what, where:** river gravel, pan, property

<!-- .vabout -->
This is test 1 · ★★ of lesson 19 «Mixtures and how to separate them» 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/19-mixtures-and-separating/#t1).

## The question {#question}

<!-- .note -->
*Sentence 1:* Gold-seekers swirl river gravel in a pan of water.

```conllu
# sent_id = question:world:19-mixtures-and-separating:t1:1
# text = Gold-seekers swirl river gravel in a pan of water.
1	Gold	gold	NOUN	NN	Number=Sing	3	compound	_	SpaceAfter=No
2	-	-	PUNCT	HYPH	_	1	punct	_	SpaceAfter=No
3	seekers	seeker	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	swirl	swirl	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	river	river	NOUN	NN	Number=Sing	6	compound	_	_
6	gravel	gravel	NOUN	NN	Number=Sing	4	obj	_	_
7	in	in	ADP	IN	_	9	case	_	_
8	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	_	_
9	pan	pan	NOUN	NN	Number=Sing	4	obl	_	_
10	of	of	ADP	IN	_	11	case	_	_
11	water	water	NOUN	NN	Number=Sing	9	nmod	_	SpaceAfter=No
12	.	.	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **swirl** | present | Gold seekers | river gravel |  | a pan of water |  |  | vn modes\_of\_being\_with\_motion-47.3 «PP.location V NP»: agent=Location gravel=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:* The heavy gold stays in the pan and the lighter sand washes out.

```conllu
# sent_id = question:world:19-mixtures-and-separating:t1:2
# text = The heavy gold stays in the pan and the lighter sand washes out.
1	The	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
2	heavy	heavy	ADJ	JJ	Degree=Pos	3	amod	_	_
3	gold	gold	NOUN	NN	Number=Sing	4	nsubj	_	_
4	stays	stay	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	in	in	ADP	IN	_	7	case	_	_
6	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
7	pan	pan	NOUN	NN	Number=Sing	4	obl	_	_
8	and	and	CCONJ	CC	_	12	cc	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
10	lighter	light	ADJ	JJR	Degree=Cmp	11	amod	_	_
11	sand	sand	NOUN	NN	Number=Sing	12	nsubj	_	_
12	washes	wash	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	_
13	out	out	ADP	RP	_	12	compound:prt	_	SpaceAfter=No
14	.	.	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **stay** | present | the heavy gold |  |  | the pan |  |  | vn exist-47.1 «NP V PP.location»: agent=Theme in pan=Location |
| 2 | **wash out** | present | the lighter sand |  |  |  |  |  | vn floss-41.2.1 «NP V»: agent=Agent |

<!-- .note -->
*Sentence 3:* Which property is used?

```conllu
# sent_id = question:world:19-mixtures-and-separating:t1:3
# text = Which property is used?
1	Which	which	DET	WDT	PronType=Int	2	det	_	_
2	property	property	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	used	use	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	SpaceAfter=No
5	?	?	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **use** | present · passive |  | which property |  |  |  |  | vn eat-39.1 «NP V NP»: subject=Patient |

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
Gold dissolves in water

```conllu
# sent_id = question:world:19-mixtures-and-separating:t1:o1:1
# text = Gold dissolves in water
1	Gold	gold	NOUN	NN	Number=Sing	2	nsubj	_	_
2	dissolves	dissolve	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	in	in	ADP	IN	_	4	case	_	_
4	water	water	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **dissolve** | present | Gold |  |  | water |  |  | vn break-45.1 «NP.patient V»: agent=Patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
Gold floats on water

```conllu
# sent_id = question:world:19-mixtures-and-separating:t1:o2:1
# text = Gold floats on water
1	Gold	gold	NOUN	NN	Number=Sing	2	nsubj	_	_
2	floats	float	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	on	on	ADP	IN	_	4	case	_	_
4	water	water	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **float** | present | Gold |  |  | water |  |  | vn run-51.3.2-2 «NP V PP.location»: agent=Theme on water=Trajectory |

### Option 3 · ← Mova's choice {#o3}

<!-- .ven lang=en -->
Gold is pulled by magnets

```conllu
# sent_id = question:world:19-mixtures-and-separating:t1:o3:1
# text = Gold is pulled by magnets
1	Gold	gold	NOUN	NN	Number=Sing	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	pulled	pull	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	by	by	ADP	IN	_	5	case	_	_
5	magnets	magnet	NOUN	NNS	Number=Plur	3	obl:agent	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **pull** | present · passive | magnets | Gold |  |  |  |  | vn push-12-1 «NP V NP»: agent=Agent subject=Theme |

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

<!-- .ven lang=en -->
Gold is much denser than sand

```conllu
# sent_id = question:world:19-mixtures-and-separating:t1:o4:1
# text = Gold is much denser than sand
1	Gold	gold	NOUN	NN	Number=Sing	4	nsubj	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	much	much	ADV	RB	_	4	advmod	_	_
4	denser	dense	ADJ	JJR	Degree=Cmp	0	root	_	_
5	than	than	ADP	IN	_	6	case	_	_
6	sand	sand	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | Gold |  |  |  |  | than sand; dense *property* | tree rules |

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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: [Materials and their properties, exam 4](https://md.mova.elamur.ai/free/en/corpora/questions/world/18-materials-and-properties/e4/)
- next →: [Mixtures and how to separate them, test 2](https://md.mova.elamur.ai/free/en/corpora/questions/world/19-mixtures-and-separating/t2/)
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