Pratique du Shadowing: Glow in the Dark Lava Lamp! - Apprendre l'anglais à l'oral avec la vidéo

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60 phrases
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Have you ever wondered why do highlighters seem to glow so brightly?
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We are going to learn about all of this and more today with my glowing lava lamp experiment.
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Hi everyone, I'm Emily Calandrelli,
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MIT engineer and host of Emily's Wonder Lab on Netflix and on my channel we learn about all things science and space.
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So grab those highlighters and those black lights
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because this kitchen is about to glow for this one
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you're going to need a glass of water filled about
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three -fourths the way up a yellow highlighter pliers oil to
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fill your glass the rest of the way up a black light
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and a fourth cup of salt adults
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and parents you'll want to do this one take your pliers
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and grab the inside of the end of your highlighter and just bend it in, bend it towards the center and pop, it comes right off.
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Now, I'm gonna wear gloves for this one.
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You don't need to because it is just highlighter ink after all, but I don't want my fingers to get stained, so I'm going to.
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So go ahead and take the tube that's inside the highlighter out.
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This contains your highlighter ink.
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Now, what you wanna do is squeeze it inside your glass of water.
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Three, two, one.
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Doesn't that look so cool?
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Now you'll notice that the highlighter seems to glow even though we don't have our black light on.
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Why is that?
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Well, it's because highlighter contains phosphors and phosphors make this fluorescent.
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That means it has the ability to absorb ultraviolet light and reinvent some of that light as visible light,
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light we see with our eyes basically it means it glows
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but where is the ultraviolet light right that usually comes from our black light
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but we don't have that on there is always ambient ultraviolet light in any room
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that you're in and
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that is what is making our highlighter glow next you want to take your oil
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and fill your glass the rest of the way up
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so you'll notice that the oil is rising to the top this is because oil is less dense than water.
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So it's going to float right on top of the water.
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And now we can make this glow.
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Three, two, one.
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Oh, look at that.
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So you can see everywhere that the highlighter is, is glowing.
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It is actually fluorescing.
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And now we can transform this into a lava lamp with our salt.
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So what you want to do is just take a handful of salt.
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I'm going to go ahead and turn my light on so it's glowing as we do this.
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And you may need this much, you may not.
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It depends on how many times you want to do your lava lamp.
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But just go ahead and take a handful of salt and sprinkle it all across the top.
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The salt is denser than the oil and the water
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and as it falls down through the oil it grabs on to some of
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that oil bringing the oil down to the bottom
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but then the salt dissolves and that oil is released back up to the top
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because remember oil is less dense than water
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so it rises back up to the top creating
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that lava lamp effect another way to create your lava lamp effect is with alka -seltzer tablets just go ahead
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and throw these in just like this and those bubbles are bubbling to the top.
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Now if you want to experiment within the experiments you can try different oils, you can try sugar instead of salt,
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and you can try different highlighter colors just to see what happens.
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If you try any of these let me know what you find.
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Thanks for making glow -in -the -dark lava lamps with me.
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If you like this one check out my best -selling
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Stay Curious and Keep Exploring series for 99 more science experiments that are fun for the whole family.
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I'm Emily Calandrelli.
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Subscribe to learn about all things science and space.
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And remember to stay curious and keep exploring.
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I'll see you next time.

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Vocabulaire et conseils d’expression pour cette leçon

Cette leçon d’expression orale s’appuie sur la vidéo « Glow in the Dark Lava Lamp! ». Les mots qui reviennent le plus souvent : highlighter, oil, glow, salt, lava. Cette vidéo contient 60 phrases et 693 mots à répéter en shadowing. La partie parlée dure 4:11. Le locuteur parle à un rythme naturel d’environ 166 mots par minute, proche d’une conversation courante. 84 % des mots font partie des 3 000 mots les plus courants en anglais ; le reste mérite d’être vu avant de commencer.

Vocabulaire clé de cette vidéo

15 mots de la vidéo à retenir, avec leur prononciation et leur sens :

MotPrononciationSens
glow verbe/ɡloʊ/briller, luire
lamp nom/ˈlæ̝mp/lampe
lava nom/ˈlɑvə/lave
experiment nom/ɪkˈspɛɹ.ə.mənt/expérience
dense adjectif/ˈdɛns/dense
curious adjectif/ˈkjʊɹ.i.əs/curieux
explore verbe/ɪkˈsploɹ/explorer
bubble nom/ˈbʌbəl/bulle
bend verbe/bɛnd/courber, tordre
handful nom/ˈhæn(d)fʊl/manipule
finger nom/ˈfɪŋɡɚ/doigt
visible adjectif/ˈvɪzɪb(ə)l/visible
tube nom/tuːb/tube
depend verbe/dɪˈpɛnd/dépendre
transform verbe/tɹænsˈfɔɹm/transformer

Les verbes à particule que vous entendrez

MotPrononciationSens
go ahead verbe/ˌɡoʊ əˈhɛd/vas-y, allez-y
check out verbemater, regarder
fall down verbe/fɔl ˈdaʊn/tomber

Des phrases à répéter

Des phrases courtes et complètes de la vidéo, à réutiliser dans la conversation de tous les jours :

  • Have you ever wondered why do highlighters seem to glow so brightly?
  • Doesn't that look so cool?
  • I'll see you next time.

La grammaire de cette vidéo

Les structures que le locuteur utilise le plus, avec les mots exacts de la vidéo :

StructureDans la vidéo
Comparatifs -er than / more … than — comparer deux élémentsless dense than · denser than
Verbe + -ing enjoy, keep, stop… + -ing — les verbes suivis de la forme en -ingKeep Exploring
Présent continu am/is/are + -ing — ce qui se passe en ce momentis making · is rising · is glowing
Futur avec « going to » be going to + verbe — un projet ou ce que l’on voit venirare going to learn · you're going to need · gonna wear

Prononciation à surveiller

Le locuteur utilise 18 contractions et formes réduites, comme I'm, don't, you'll. Prononcez-les sous leur forme courte, telles que vous les entendez.

  • Mots longs — placez bien l’accent: experiment /ɪkˈspɛɹ.ə.mənt/, ultraviolet /ˌʌltɹəˈvaɪələt/

Les sons difficiles pour les francophones :

  • /h/ — il se souffle, il n’est pas muet: handful /ˈhæn(d)fʊl/, highlighter /ˈhaɪ.laɪt.ɚ/
  • /r/ anglais — langue recourbée, sans frotter la gorge: experiment /ɪkˈspɛɹ.ə.mənt/, curious /ˈkjʊɹ.i.əs/, explore /ɪkˈsploɹ/, transform /tɹænsˈfɔɹm/, subscribe /səbˈskɹaɪb/

Comment s’entraîner avec cette vidéo

  1. Écoutez la vidéo en entier une fois sans parler et notez les mots que vous ne connaissez pas.
  2. Commencez à la vitesse 0,75×, répétez phrase par phrase, puis revenez à la vitesse normale quand cela devient facile.
  3. Enregistrez-vous et comparez avec l’original, en faisant attention à des mots comme glow, lamp, lava.

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.

Technique du shadowing : lire le guide complet étape par étape →