---
title: At the equator the ground moves at about 1,600 kilometres an hour, b… — Day and night, and the Moon's faces · tree and pragmatics
description: At the equator the ground moves at about 1,600 kilometres an hour, but we feel nothing because the motion is smooth. Who acts: ground, we, motion. A sentence of the lesson «Day and night, and the Moon's faces» of the physics course of Mova's primary school with its dependency tree and the pragmatics
---

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# Day and night, and the Moon's faces, sentence 8

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At the equator the ground moves at about 1,600 kilometres an hour, but we feel nothing because the motion is smooth.

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**Who acts:** ground, we, motion · **What happens:** move, feel, be · **To what, where:** equator, nothing

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This is a sentence of the lesson «Day and night, and the Moon's faces» of the physics course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (ground, we, motion), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:physics:039-day-and-night-and-the-moons-faces.lesson:8
# text = At the equator the ground moves at about 1,600 kilometres an hour, but we feel nothing because the motion is smooth.
# source = school lesson (ours)
# course = physics
# lesson = 039-day-and-night-and-the-moons-faces.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change
1	At	at	ADP	IN	_	3	case	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	equator	equator	NOUN	NN	Number=Sing	6	obl	_	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	_	_
5	ground	ground	NOUN	NN	Number=Sing	6	nsubj	_	_
6	moves	move	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	at	at	ADP	IN	_	10	case	_	_
8	about	about	ADV	RB	_	9	advmod	_	_
9	1,600	1,600	NUM	CD	NumForm=Digit|NumType=Card	10	nummod	_	_
10	kilometres	kilometre	NOUN	NNS	Number=Plur	6	obl	_	_
11	an	a	DET	DT	Definite=Ind|PronType=Art	12	det	_	_
12	hour	hour	NOUN	NN	Number=Sing	10	nmod:unmarked	_	_
13	,	,	PUNCT	,	_	16	punct	_	_
14	but	but	CCONJ	CC	_	16	cc	_	_
15	we	we	PRON	PRP	Case=Nom|Number=Plur|Person=1|PronType=Prs	16	nsubj	_	_
16	feel	feel	VERB	VBP	Mood=Ind|Number=Plur|Person=1|Tense=Pres|VerbForm=Fin	6	conj	_	_
17	nothing	nothing	PRON	NN	Number=Sing|PronType=Neg	16	obj	_	_
18	because	because	SCONJ	IN	_	22	mark	_	_
19	the	the	DET	DT	Definite=Def|PronType=Art	20	det	_	_
20	motion	motion	NOUN	NN	Number=Sing	22	nsubj	_	_
21	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	22	cop	_	_
22	smooth	smooth	ADJ	JJ	Degree=Pos	16	advcl	_	_
23	.	.	PUNCT	.	_	6	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **move** | present | the ground |  |  | the equator |  | at 1,600 kilometres  a hour | vn roll-51.3.1 «NP.theme V PP.source PP.trajectory PP.destination»: agent=Theme at equator=Source at kilometre=Trajectory |
| 2 | **feel** | present | we | nothing |  |  |  |  | vn hunt-35.1 «NP V NP»: agent=Agent nothing=Theme |
| 3 | **is** | present | the motion |  |  |  |  | smooth *property* | tree rules |

<!-- .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.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:physics:039-day-and-night-and-the-moons-faces.lesson:8`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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