Pratique du Shadowing: Astronaut Experiment: Crash Course Kids #32.2 - Apprendre l'anglais à l'oral avec la vidéo

Création de la leçon...
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Seeing is believing, right?
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That's what people say, and that's why some things can be kind of hard to understand.
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Things can look a certain way, but sometimes there's a lot more going on than what your eyes can show you.
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Like last time we learned that all objects, no matter how massive or heavy they are, fall at the same speed on Earth.
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But objects can seem to fall at different speeds because of a little something called air resistance, the friction between a moving object and air.
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So if I drop a hammer and a feather from the same height at the same time, the hammer is going to hit the ground before the feather.
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Now, that's great and all, but do we know that air resistance is what affects how fast things fall here on Earth?
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To figure this out, let's start by going back to our old friend, Commander Dave Scott.
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He is the astronaut who dropped the feather and the hammer on the moon back in 1971.
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And when he dropped them both at the same time, they reached the ground, or at least, the surface of the moon, at the same time, even though the hammer,
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obviously, had a lot more mass than the feather.
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So why did Commander Scott get different results from his experiment,
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whereas if I did, the hammer would hit the ground first? has almost none.
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So as the feather falls through the air on Earth, its flat fluffy shape makes it run into a lot more air resistance than the hammer does.
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In other words, on both Earth and the moon, it's not a difference in gravity that causes the hammer to hit the ground before the feather, it's a difference in air resistance.
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But in order to prove it, we have to do an experiment, like Commander Scott's, but do it on Earth.
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This looks like a job for Cartoon Sabrina.
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For this experiment, she's going to need a ball, a little parachute, and a spacesuit.
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First, let's watch as Mini -Me climbs up a ladder and drops a ball.
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We'll see how long it takes to hit the ground and write down the data.
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Now let's take the same ball and attach a little parachute to it.
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We'll drop it again from the ladder
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and we see it takes longer for the ball with the parachute to hit the ground.
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Why?
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Because there's more friction between the ball -parachute combo and the air than just the ball alone.
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More friction means more air resistance, and more air resistance means a longer time to reach the ground.
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That adds up, right?
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But if we're going to do something like Commander Scott did on the moon, we have to ask: what would happen if there were no atmosphere?
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For this part of the experiment, we'll need to create a vacuum, an area where there is no air.
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So we'll repeat the experiment in a large, airtight room and pump out all of the air, and in you go, Cartoon Sabrina.
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What do you think will happen when Cartoon Me drops the same two things, the ball with the parachute and just the ball, in a room with no air?
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It makes sense that no air means no air resistance, right?
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Let's see.
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First, Cartoon Me drops the ball from the ladder again, and we record the time.
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And then see what happens when we attach the ball to the parachute.
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Well, now the parachute doesn't make much of a difference in how long it takes for the ball to hit the ground.
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In fact, the parachute doesn't even open.
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That's because in a vacuum there is no air.
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No air means no air resistance, and when we take away air resistance, we take away the force that slows down the object that's falling,
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and that means objects dropped from the same height will hit the ground at the same time.
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Scott did on the moon.
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Thanks little me.
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So, air resistance, or the friction between a moving object and the air, has a huge effect on how fast things fall on Earth.
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We can support this argument with the evidence we got from our investigation.
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When it comes to objects falling on Earth, it's the resistance that makes the difference.
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I may not have made it to the moon myself yet, but at least Cartoon Me has managed to recreate a famous astronaut experiment.
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Oh
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Why practice speaking with this video?

This engaging video titled "Astronaut Experiment: Crash Course Kids #32.2" provides a unique opportunity for English learners to practice their speaking skills in an exciting scientific context. By following along with the video, learners can leverage the shadowing technique, which involves mimicking the speaker's intonation and pronunciation as they explain complex concepts like air resistance and gravity. This practice not only enhances fluency but also boosts comprehension of scientific vocabulary.

Practicing speaking while watching this video allows learners to connect language learning with engaging content. The context of an astronaut's experiment makes the language feel relevant and practical, as it encourages participants to discuss ideas about gravity, motion, and resistance in real-world terms. This method fosters greater retention and understanding, making it a fun way to learn English with YouTube while improving expressive capabilities.

Grammar & Expressions in Context

Throughout the transcript, several key structures and phrases are used that can enrich your own English speaking abilities:

  • "Things can look a certain way, but sometimes..." - This phrase emphasizes contrast and is useful for discussing different perspectives or interpretations.
  • "In other words..." - A common phrase used to clarify or restate information, helping learners to express complex ideas more clearly.
  • "What would happen if there were no atmosphere?" - This hypothetical construction ("what would happen if...") is great for discussing possibilities and making conjectures.
  • "We have to do an experiment like Commander Scott's..." - This structure shows how to relate a discussion to prior knowledge or recent information, enhancing coherence in speaking.
  • "Objects dropped at the same height will hit the ground at the same time." - This sentence highlights a scientific principle that is straightforward and can be used to practice clear and concise explanations.

Common Pronunciation Traps

While shadowing this video, learners might encounter tricky words and phrases that could pose pronunciation challenges:

  • "Parachute" - Pay attention to the correct vowel sounds and stress; learners often mispronounce it by running the syllables together.
  • "Experiment" - This word is frequently mispronounced because of its multi-syllabic structure; practicing it can enhance clarity when discussing scientific topics.
  • "Atmosphere" - The nuances in this word's pronunciation can be tricky; focusing on the three syllables can help in articulating it correctly.
  • "Air resistance" - This technical term requires understanding of linking sounds, as it often feels awkward to say quickly; practice will improve fluency.

Incorporating the shadowspeak method by following the video's dialogue closely will refine your pronunciation and enhance your ability to speak smoothly about complex themes in English. Regularly engaging with this content can significantly bolster your English speaking practice.

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 →