--- title: Sound is fast, but nowhere near as fast as light: in air it goes abo… — Thunder, sirens and how fast sound travels · tree and pragmatics description: Sound is fast, but nowhere near as fast as light: in air it goes about one kilometre every three seconds, while light crosses the same distance almost instantly. Who acts: Sound, light. A sentence of the lesson «Thunder, sirens and how fast sound travels» of the physics course of Mova's primary scho --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/physics/18-thunder-sirens-and-how-fast-sound-travels/0/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Physics](https://md.mova.elamur.ai/free/en/corpora/school/physics/) / [Thunder, sirens and how fast sound tra…](https://md.mova.elamur.ai/free/en/corpora/school/physics/18-thunder-sirens-and-how-fast-sound-travels/) / 0 # Thunder, sirens and how fast sound travels, sentence 0 Sound is fast, but nowhere near as fast as light: in air it goes about one kilometre every three seconds, while light crosses the same distance almost instantly. **Who acts:** Sound, light · **What happens:** be, go about, cross · **To what, where:** one kilometre, air, same distance This is a sentence of the lesson «Thunder, sirens and how fast sound travels» 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 (Sound, light), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:physics:018-thunder-sirens-and-how-fast-sound-travels.lesson:0 # text = Sound is fast, but nowhere near as fast as light: in air it goes about one kilometre every three seconds, while light crosses the same distance almost instantly. # source = school lesson (ours) # course = physics # lesson = 018-thunder-sirens-and-how-fast-sound-travels.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): R5-strong ×2, R7-rel-agree ×1 1 Sound sound NOUN NN Number=Sing 3 nsubj _ _ 2 is be AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 3 cop _ _ 3 fast fast ADJ JJ Degree=Pos 0 root _ _ 4 , , PUNCT , _ 9 punct _ _ 5 but but CCONJ CC _ 9 cc _ _ 6 nowhere nowhere ADV RB PronType=Neg 7 advmod _ _ 7 near near ADV RB _ 9 advmod _ _ 8 as as ADV RB _ 9 advmod _ _ 9 fast fast ADJ JJ Degree=Pos 3 conj _ _ 10 as as ADP IN _ 11 case _ _ 11 light light NOUN NN Number=Sing 9 obl _ _ 12 : : PUNCT : _ 16 punct _ _ 13 in in ADP IN _ 14 case _ _ 14 air air NOUN NN Number=Sing 16 obl _ _ 15 it it PRON PRP Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs 16 nsubj _ _ 16 goes go VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 3 parataxis _ Agree=R7-rel-agree|Haiku=3:conj 17 about about ADV RB _ 18 advmod _ _ 18 one one NUM CD NumForm=Word|NumType=Card 19 nummod _ _ 19 kilometre kilometre NOUN NN Number=Sing 16 obj _ _ 20 every every DET DT PronType=Tot 22 det _ Agree=R5-strong|Haiku=21:det 21 three three NUM CD NumForm=Word|NumType=Card 22 nummod _ _ 22 seconds second NOUN NNS Number=Plur 16 obl:unmarked _ _ 23 , , PUNCT , _ 26 punct _ _ 24 while while SCONJ IN _ 26 mark _ _ 25 light light NOUN NN Number=Sing 26 nsubj _ _ 26 crosses cross VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 16 advcl _ Agree=R5-strong|Haiku=3:parataxis 27 the the DET DT Definite=Def|PronType=Art 29 det _ _ 28 same same ADJ JJ Degree=Pos 29 amod _ _ 29 distance distance NOUN NN Number=Sing 26 obj _ _ 30 almost almost ADV RB _ 31 advmod _ _ 31 instantly instantly ADV RB _ 26 advmod _ _ 32 . . PUNCT . _ 3 punct _ _ ``` ## Pragmatics {#pragmatics} No stored speech act for this sentence. | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **is** | present | Sound | | | | | fast *property* | tree rules | | 2 | **be** | | Sound *not said here* | | | | | as light; near *property* | tree rules | | 3 | **go about** | present | Sound | one kilometre | | air | second | | vn confront-98 «NP V NP»: agent=Agent kilometre=Theme | | 4 | **cross** | present | light | the same distance | | | | instantly *property* | vn crane-40.3.2 «NP V NP»: agent=Agent distance=Patient | 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. **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:018-thunder-sirens-and-how-fast-sound-travels.lesson:0`. **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): R5-strong ×2, R7-rel-agree ×1. **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/). - ← previous: [What sound is: wobbles in the air, 16](https://md.mova.elamur.ai/free/en/corpora/school/physics/17-what-sound-is-wobbles-in-the-air/16/) - next →: [Thunder, sirens and how fast sound tra…, 1](https://md.mova.elamur.ai/free/en/corpora/school/physics/18-thunder-sirens-and-how-fast-sound-travels/1/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/physics/18-thunder-sirens-and-how-fast-sound-travels/)