Pratique du Shadowing: Science Fair: Gravity and Free Fall - Apprendre l'anglais à l'oral avec la vidéo

Création de la leçon...
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Hey guys, it's me, Samara.
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And I'm Brandon.
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And welcome back to the Adventure Academy Science Fair.
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Hey, Samara.
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I've had a question that's really been bothering me.
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What's that?
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Oh, that's a weird one.
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I was reading about in an article how a scientist in the late 1500s by the name of Galileo, cool name, said that if two objects dropped,
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one heavy and one light, that gravity would pull them down at the same exact speed.
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That's correct, but what's got me confused is this.
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If I drop the rock and the feather at the exact same time, the rock always falls faster.
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So how could Galileo have been right?
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Ah, I see.
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The thing is, when you drop things here on Earth, gravity isn't the only force acting on them.
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While the force of gravity is pulling them down, The air below them is pushing them up.
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Scientists call this force air resistance.
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And back in 1971, astronaut David Scott did the experiment on the moon by dropping a feather and his rock hammer.
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Since the moon has no air, the feather and the hammer hit the ground at the same time, even though the hammer was much heavier.
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That seems like something I really want to try out for myself.
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The eagle has landed.
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Well, we might not be able to do it with the feather and the rock, but we could do it with a book and a piece of paper.
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Go on.
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Okay, hold the book in one hand
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and the paper in the other at the exact same height and drop them at the same time.
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You see?
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The book fell down because it's heavier.
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Not so fast, oh skeptical one.
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Put the paper on top of the book.
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And then see what happens.
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Okay.
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What?
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Whoa, whoa, whoa!
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How did that happen?
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Science.
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When you put the paper on top of the book, the book blocked the air from painting the bottom of the paper.
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This got rid of the air resistance on the paper.
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Okay, you convinced me, but I still would like to do this on the moon.
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Anyway, there you guys go.
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Another cool science mystery solved with the help of experiments.
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See you guys next time.
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Bye!

À propos de cette leçon

Vous vous entraînez en anglais avec "Science Fair: Gravity and Free Fall" en utilisant la technique du Shadowing.

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.

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