--- title: If the Earth had no magnetic field, what might happen over a very lo… — Compasses and the magnetic Earth · tree and pragmatics description: If the Earth had no magnetic field, what might happen over a very long time? Test 6 · ★ of lesson 30 «Compasses and the magnetic Earth» of the physics course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/physics/30-compasses-and-the-magnetic-earth/t6/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [questions](https://md.mova.elamur.ai/free/en/corpora/questions/) / [Physics](https://md.mova.elamur.ai/free/en/corpora/questions/physics/) / [Compasses and the magnetic Earth](https://md.mova.elamur.ai/free/en/corpora/questions/physics/30-compasses-and-the-magnetic-earth/) / t6 # Test 6 · ★ · Compasses and the magnetic Earth If the Earth had no magnetic field, what might happen over a very long time? **Mova's choice:** option 4 · **The right answer:** option 4 · right ✓ · **Who acts:** Earth, magnetic field · **What happens:** have, happen · **To what, where:** magnetic field This is test 6 · ★ of lesson 30 «Compasses and the magnetic Earth» of the physics 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/physics/30-compasses-and-the-magnetic-earth/#t6). ## The question {#question} ```conllu # sent_id = question:physics:30-compasses-and-the-magnetic-earth:t6:1 # text = If the Earth had no magnetic field, what might happen over a very long time? 1 If if SCONJ IN _ 4 mark _ _ 2 the the DET DT Definite=Def|PronType=Art 3 det _ _ 3 Earth Earth PROPN NNP Number=Sing 4 nsubj _ _ 4 had have VERB VBD Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin 0 root _ _ 5 no no DET DT PronType=Neg 7 det _ _ 6 magnetic magnetic ADJ JJ Degree=Pos 7 amod _ _ 7 field field NOUN NN Number=Sing 4 obj _ SpaceAfter=No 8 , , PUNCT , _ 11 punct _ _ 9 what what PRON WP PronType=Int 11 nsubj _ _ 10 might might AUX MD VerbForm=Fin 11 aux _ _ 11 happen happen VERB VB VerbForm=Inf 7 acl:relcl _ _ 12 over over ADP IN _ 16 case _ _ 13 a a DET DT Definite=Ind|PronType=Art 16 det _ _ 14 very very ADV RB _ 15 advmod _ _ 15 long long ADJ JJ Degree=Pos 16 amod _ _ 16 time time NOUN NN Number=Sing 11 obl _ SpaceAfter=No 17 ? ? PUNCT . _ 4 punct _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **have** | past | the Earth | no magnetic field | | | | | vn birth-28.2-1 «NP V NP»: agent=Agent field=Patient | | 2 | **happen** | might | no magnetic field | | | | time | | vn occur-48.3-1 «NP V»: agent=Theme | 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 {#o1} Compasses would point south instead ```conllu # sent_id = question:physics:30-compasses-and-the-magnetic-earth:t6:o1:1 # text = Compasses would point south instead 1 Compasses compass NOUN NNS Number=Plur 3 nsubj _ _ 2 would would AUX MD VerbForm=Fin 3 aux _ _ 3 point point VERB VB VerbForm=Inf 0 root _ _ 4 south south ADV RB _ 3 advmod _ _ 5 instead instead ADV RB _ 3 advmod _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **point** | would | Compasses | | | | | instead, south *property* | vn wink-40.3.1 «NP V»: agent=Agent | ### Option 2 {#o2} Rain would fall upwards ```conllu # sent_id = question:physics:30-compasses-and-the-magnetic-earth:t6:o2:1 # text = Rain would fall upwards 1 Rain rain NOUN NN Number=Sing 3 nsubj _ _ 2 would would AUX MD VerbForm=Fin 3 aux _ _ 3 fall fall VERB VB VerbForm=Inf 0 root _ _ 4 upwards upwards ADV RB _ 3 advmod _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **fall** | would | Rain | | | | | upwards *property* | vn occur-48.3 «NP V»: agent=Theme | ### Option 3 {#o3} The Earth would stop going round the Sun and drift off into space ```conllu # sent_id = question:physics:30-compasses-and-the-magnetic-earth:t6:o3:1 # text = The Earth would stop going round the Sun and drift off into space 1 The the DET DT Definite=Def|PronType=Art 2 det _ _ 2 Earth Earth PROPN NNP Number=Sing 4 nsubj _ _ 3 would would AUX MD VerbForm=Fin 4 aux _ _ 4 stop stop VERB VB VerbForm=Inf 0 root _ _ 5 going go VERB VBG VerbForm=Ger 4 xcomp _ _ 6 round round ADP IN _ 8 case _ _ 7 the the DET DT Definite=Def|PronType=Art 8 det _ _ 8 Sun Sun PROPN NNP Number=Sing 5 obl _ _ 9 and and CCONJ CC _ 10 cc _ _ 10 drift drift VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 4 conj _ _ 11 off off ADP RP _ 10 compound:prt _ _ 12 into into ADP IN _ 13 case _ _ 13 space space NOUN NN Number=Sing 10 obl _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **stop** | would | the Earth | | | | | | vn stop-55.4-1-1 «NP V S\_ING»: agent=Affector clause=Eventuality | | 2 | **go** | gerund | the Earth *not said here* | | | the Sun | | | vn escape-51.1-1 «NP V PP.initial\_location»: agent=Theme round sun=Initial\_Location | | 3 | **drift off** | present | the Earth *not said here* | | | space | | | vn change\_bodily\_state-40.8.4 «NP V»: agent=Experiencer | ### Option 4 · ← Mova's choice · ✓ the right answer {#o4} The Sun's charged bits would strip away some of our air ```conllu # sent_id = question:physics:30-compasses-and-the-magnetic-earth:t6:o4:1 # text = The Sun's charged bits would strip away some of our air 1 The the DET DT Definite=Def|PronType=Art 2 det _ _ 2 Sun Sun PROPN NNP Number=Sing 5 nmod:poss _ SpaceAfter=No 3 's 's PART POS _ 2 case _ _ 4 charged charge VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 5 amod _ _ 5 bits bit NOUN NNS Number=Plur 7 nsubj _ _ 6 would would AUX MD VerbForm=Fin 7 aux _ _ 7 strip strip VERB VB VerbForm=Inf 0 root _ _ 8 away away ADV RB _ 7 compound:prt _ _ 9 some some DET DT PronType=Ind 7 obj _ _ 10 of of ADP IN _ 12 case _ _ 11 our our PRON PRP$ Case=Gen|Number=Plur|Person=1|Poss=Yes|PronType=Prs 12 nmod:poss _ _ 12 air air NOUN NN Number=Sing 9 nmod _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **charge** | participle | | | | | | | vn run-51.3.2 «NP V»: agent=Theme | | 2 | **strip away** | would | the Sun's charged bits | some | | | | | vn dress-41.1.1-1-1 «NP V NP»: agent=Agent some=Patient | **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. - ← previous: [Compasses and the magnetic Earth, test 5](https://md.mova.elamur.ai/free/en/corpora/questions/physics/30-compasses-and-the-magnetic-earth/t5/) - next →: [Compasses and the magnetic Earth, test 7](https://md.mova.elamur.ai/free/en/corpora/questions/physics/30-compasses-and-the-magnetic-earth/t7/) - ↑ back to [Compasses and the magnetic Earth](https://md.mova.elamur.ai/free/en/corpora/questions/physics/30-compasses-and-the-magnetic-earth/)