Pratique du Shadowing: What Are Igneous Rocks? - Apprendre l'anglais à l'oral avec la vidéo
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33 phrases
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Igneous rocks.
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Objective.
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To learn about igneous rocks, their types and formation.
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The Earth's crust is made up of different types of rocks.
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The rocks which make up the maximum volume of the Earth's crust are called igneous rocks.
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The word igneous has been derived from the Latin word ignis, which means fire.
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These rocks are associated with volcanic eruptions.
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Let's study more about igneous rocks and how they are formed.
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The liquid rock matter that we see coming out from volcanoes is called magma.
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It is a hot liquid made of melted minerals.
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When this magma reaches the earth's surface,
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it is known as lava.
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The cooling and the solidification of lava at the Earth's surface result in the formation of extrusive igneous rocks,
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which are also known as volcanic rocks.
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Due to rapid cooling, their crystals are fine-grained.
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However, some of the magma can't come out and settles inside the surface.
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The magma cools slowly beneath the Earth's surface as it is completely surrounded by the soil and rock present there.
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The cooling
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and the solidification of magma at a depth within the Earth's
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crust result in the formation of rocks having large crystals known as intrusive igneous rocks.
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So we have learned that igneous rocks are of two types,
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extrusive igneous rocks and intrusive igneous rocks.
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It is interesting to know that igneous rocks were the first to be formed and are also known as primary rocks.
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Pumice and obsidian are extrusive igneous rocks.
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Pumice is used in making lightweight concrete.
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And obsidian is used in ornaments.
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Granite and diorite are intrusive igneous rocks.
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Both are used as building material.
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To summarise, Igneous rocks are of two types,
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extrusive igneous rocks and intrusive igneous rocks.
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The cooling and the solidification of lava at the Earth's surface result in the formation of extrusive igneous rocks.
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They are also known as volcanic rocks.
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The cooling and the solidification of magma at a depth within the Earth's crust result in the formation of intrusive igneous rocks.
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Vocabulaire et conseils d’expression pour cette leçon
Cette leçon d’expression orale de niveau C1 s’appuie sur la vidéo « What Are Igneous Rocks? ». Les mots qui reviennent le plus souvent : rock, igneous, magma, extrusive, intrusive. Cette vidéo contient 33 phrases et 337 mots à répéter en shadowing. La partie parlée dure 4:07. Le locuteur parle lentement, environ 82 mots par minute, ce qui laisse le temps d’imiter chaque son. Seuls 67 % des mots font partie des 3 000 mots les plus courants en anglais, le vocabulaire est donc exigeant.
Vocabulaire clé de cette vidéo
Les 15 mots les plus avancés de la vidéo, avec leur prononciation et leur sens :
| Mot | Prononciation | Sens |
|---|---|---|
| igneous adjectif | /ˈɪɡ.ni.əs/ | igné |
| magma nom | /ˈmæɡ.mə/ | magma |
| extrusive adjectif | extrusif | |
| intrusive adjectif | /ɪnˈtɹuːsɪv/ | intrusif |
| volcanic adjectif | /vɔlˈkænɪk/ | volcanique |
| lava nom | /ˈlɑvə/ | lave |
| obsidian nom | /əbˈsɪd.i.ən/ | obsidienne |
| pumice nom | /ˈpʌm.ɪs/ | ponce, pierre ponce |
| diorite nom | /ˈdaɪ.əˌɹaɪt/ | diorite |
| ornament nom | /ˈɔɹnəmənt/ | ornement |
| summarize verbe | /ˈsʌməˌɹaɪz/ | résumer, récapituler |
| derive verbe | /dɪˈɹaɪv/ | tirer, trouver |
| eruption nom | /ɪˈɹʌpʃən/ | éruption |
| volcano nom | /vɑlˈkeɪ.noʊ/ | volcan |
| lightweight nom | /ˈlaɪt.weɪt/ | poids léger |
Les verbes à particule que vous entendrez
| Mot | Prononciation | Sens |
|---|---|---|
| come out verbe | /ˌkʌm ˈaʊt/ | sortir |
| make up verbe | /ˌmeɪk ˈʌp/ | constituer, composer |
La grammaire de cette vidéo
Les structures que le locuteur utilise le plus, avec les mots exacts de la vidéo :
| Structure | Dans la vidéo |
|---|---|
| Voix passive be + participe passé — l’accent est mis sur ce qui arrive, pas sur qui le fait | is made · are called · has been derived |
| Present perfect have/has + participe passé — une action passée qui compte encore maintenant | has been derived · have learned |
Prononciation à surveiller
Les sons difficiles pour les francophones :
- /r/ anglais — langue recourbée, sans frotter la gorge: intrusive /ɪnˈtɹuːsɪv/, crust /kɹʌst/, diorite /ˈdaɪ.əˌɹaɪt/, ornament /ˈɔɹnəmənt/, summarize /ˈsʌməˌɹaɪz/
Comment s’entraîner avec cette vidéo
- Écoutez la vidéo en entier une fois sans parler et notez les mots que vous ne connaissez pas.
- Répétez phrase par phrase à vitesse normale, en reprenant chacune jusqu’à ce que votre rythme corresponde à celui du locuteur.
- Enregistrez-vous et comparez avec l’original, en faisant attention à des mots comme igneous, magma, extrusive.
Qu'est-ce que la technique du Shadowing ?
Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.