---
title: Big storms north of the equator spin anticlockwise and south of it c… — Winds, monsoons and ocean currents · tree and pragmatics
description: Big storms north of the equator spin anticlockwise and south of it clockwise. What causes the difference? Test 11 · ★★★ of lesson 22 «Winds, monsoons and ocean currents» of the geography course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova
---

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# Test 11 · ★★★ · Winds, monsoons and ocean currents

<!-- .ven lang=en -->
Big storms north of the equator spin anticlockwise and south of it clockwise. What causes the difference?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **What happens:** cause · **To what, where:** difference

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This is test 11 · ★★★ of lesson 22 «Winds, monsoons and ocean currents» of the geography 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/geography/22-winds-monsoons-and-ocean-currents/#t11).

## The question {#question}

<!-- .note -->
*Sentence 1:* Big storms north of the equator spin anticlockwise and south of it clockwise.

```conllu
# sent_id = question:geography:22-winds-monsoons-and-ocean-currents:t11:1
# text = Big storms north of the equator spin anticlockwise and south of it clockwise.
1	Big	big	ADJ	JJ	Degree=Pos	2	amod	_	_
2	storms	storm	NOUN	NNS	Number=Plur	0	root	_	_
3	north	north	ADV	RB	_	2	advmod	_	_
4	of	of	ADP	IN	_	7	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
6	equator	equator	NOUN	NN	Number=Sing	7	compound	_	_
7	spin	spin	NOUN	NN	Number=Sing	3	obl	_	_
8	anticlockwise	anticlockwise	ADV	RB	_	3	conj	_	_
9	and	and	CCONJ	CC	_	10	cc	_	_
10	south	south	ADV	RB	_	3	conj	_	_
11	of	of	ADP	IN	_	12	case	_	_
12	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	obl	_	_
13	clockwise	clockwise	ADV	RB	_	3	advmod	_	SpaceAfter=No
14	.	.	PUNCT	.	_	2	punct	_	_
```

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

<!-- .note -->
*Sentence 2:* What causes the difference?

```conllu
# sent_id = question:geography:22-winds-monsoons-and-ocean-currents:t11:2
# text = What causes the difference?
1	What	what	PRON	WP	PronType=Int	2	nsubj	_	_
2	causes	cause	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	difference	difference	NOUN	NN	Number=Sing	2	obj	_	SpaceAfter=No
5	?	?	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **cause** | present |  | the difference |  |  |  |  | vn engender-27.1-1 «NP V NP»: agent=Precondition difference=Patient |

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
The water is much saltier south of the equator

```conllu
# sent_id = question:geography:22-winds-monsoons-and-ocean-currents:t11:o1:1
# text = The water is much saltier south of the equator
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	water	water	NOUN	NN	Number=Sing	5	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
4	much	much	ADV	RB	_	5	advmod	_	_
5	saltier	salty	ADJ	JJR	Degree=Cmp	0	root	_	_
6	south	south	ADV	RB	_	5	advmod	_	_
7	of	of	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	equator	equator	NOUN	NN	Number=Sing	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | the water |  |  |  |  | of the equator; salty, south *property* | tree rules |

### Option 2 {#o2}

<!-- .ven lang=en -->
The Sun shines on the two halves from opposite sides

```conllu
# sent_id = question:geography:22-winds-monsoons-and-ocean-currents:t11:o2:1
# text = The Sun shines on the two halves from opposite sides
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	Sun	Sun	PROPN	NNP	Number=Sing	3	nsubj	_	_
3	shines	shine	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	on	on	ADP	IN	_	7	case	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	7	det	_	_
6	two	two	NUM	CD	NumForm=Word|NumType=Card	7	nummod	_	_
7	halves	half	NOUN	NNS	Number=Plur	3	obl	_	_
8	from	from	ADP	IN	_	10	case	_	_
9	opposite	opposite	ADJ	JJ	Degree=Pos	10	amod	_	_
10	sides	side	NOUN	NNS	Number=Plur	7	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **shine** | present | the Sun |  |  | the two halves from opposite sides |  |  | vn light\_emission-43.1 «NP V PP.location»: agent=Theme on half=Location |

### Option 3 {#o3}

<!-- .ven lang=en -->
The Moon pulls storms in opposite directions in each half of the world

```conllu
# sent_id = question:geography:22-winds-monsoons-and-ocean-currents:t11:o3:1
# text = The Moon pulls storms in opposite directions in each half of the world
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	Moon	Moon	PROPN	NNP	Number=Sing	3	nsubj	_	_
3	pulls	pull	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	storms	storm	NOUN	NNS	Number=Plur	3	obj	_	_
5	in	in	ADP	IN	_	7	case	_	_
6	opposite	opposite	ADJ	JJ	Degree=Pos	7	amod	_	_
7	directions	direction	NOUN	NNS	Number=Plur	3	obl	_	_
8	in	in	ADP	IN	_	10	case	_	_
9	each	each	DET	DT	PronType=Tot	10	det	_	_
10	half	half	NOUN	NN	Number=Sing|NumForm=Word|NumType=Frac	7	nmod	_	_
11	of	of	ADP	IN	_	13	case	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
13	world	world	NOUN	NN	Number=Sing	10	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **pull** | present | the Moon | storms |  | opposite directions in each half of the world |  |  | vn push-12-1 «NP V NP»: agent=Agent storm=Theme |

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

<!-- .ven lang=en -->
Earth's spin bends moving air different ways in each half

```conllu
# sent_id = question:geography:22-winds-monsoons-and-ocean-currents:t11:o4:1
# text = Earth's spin bends moving air different ways in each half
1	Earth	Earth	PROPN	NNP	Number=Sing	3	nmod:poss	_	SpaceAfter=No
2	's	's	PART	POS	_	1	case	_	_
3	spin	spin	NOUN	NN	Number=Sing	4	nsubj	_	_
4	bends	bend	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	moving	move	VERB	VBG	VerbForm=Ger	4	xcomp	_	_
6	air	air	NOUN	NN	Number=Sing	5	obj	_	_
7	different	different	ADJ	JJ	Degree=Pos	8	amod	_	_
8	ways	way	NOUN	NNS	Number=Plur	5	obl	_	_
9	in	in	ADP	IN	_	11	case	_	_
10	each	each	DET	DT	PronType=Tot	11	det	_	_
11	half	half	NOUN	NN	Number=Sing|NumForm=Word|NumType=Frac	5	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **bend** | present | Earth's spin |  |  |  |  |  | tree rules |
| 2 | **move** | gerund | Earth's spin *not said here* | air |  | each half |  | different ways *obl* | vn roll-51.3.1 «NP V NP.theme»: agent=Agent air=Theme |
| 3 | **spin** |  | Earth |  |  |  |  |  | nom spin «event transitive»: poss=agent |

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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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