Shadowing Practice: Danger! Falling Objects: Crash Course Kids #32.1 - Learn English Speaking with Video

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1
I don't care who you are, if you live anywhere near this planet, then you're no stranger to gravity -- the force that affects every object on Earth and beyond.
2
Because of gravity, whether you're an astronaut on the International Space Station or an ordinary, clumsy, earthbound human who happens to drop her books a lot, all things caught in our planet's gravity will, in some way, have the potential to fall to Earth.
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But objects fall differently, right?
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Like when I knock a piece of paper off my desk, it takes a lot longer to fall to the ground than if I knock a book of my desk.
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So what's up with that?
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Why do things seem to fall at different speeds on Earth?
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Well, we already know that all objects have mass.
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They have a certain amount of matter in them and when gravity pulls on an object, it gives the object weight.
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Now a long time ago, people used to think that heavier things fell faster than lighter things because that's what our senses told us.
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Now, it certainly looks like the book falls faster than the piece of paper.
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And why would we expect anything else?
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That would be like dropping a hammer and a feather and expecting them to hit the ground at the same time.
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Except, the thing I just said about the hammer and the feather?
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Someone did actually try that and they did both hit the ground at the same time.
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It just didn't happen on Earth.
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True story: when astronaut Dave Scott was on the moon in 1971, he did an experiment where he dropped a falcon feather and a hammer from the same height and they hit the ground at the same time.
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Now, how can that be?
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If you drop a hammer and a feather on Earth, the feather would take a lot longer to reach the ground.
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So, what does the Earth have that the Moon doesn't?
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For one thing, an atmosphere.
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The gases that make up Earth's atmosphere push against objects as they fall and the push of the air against a falling object causes friction.
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We call that friction "air resistance." So on Earth, the feather's flat, fluffy shape makes it run into more air resistance than the hammer does.
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This makes it fall more slowly than the hammer, but since the Moon has almost no atmosphere, there is almost no air resistance, so the two objects fell at the same rate.
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So it seems to me it's the resistance of air pushing against objects that really affects how fast objects fall.
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And that means it's experiment time.
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But you don't have to go to the Moon to do this, so don't pack your bags or anything.
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All you need are two pieces of paper that are the same size.
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Crumple one of the pieces into a tight ball and leave the other one smooth and flat.
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Now, drop each piece of paper from the same height, let's say a meter, and then write down in a table how long it takes each piece to reach the ground.
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We'll see it takes the flat paper longer than the crumpled paper to hit the floor.
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This is evidence that an object's shape affects how fast it seems to fall to Earth because the two pieces of paper are exactly the same.
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They have the same mass.
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But air resistance makes the flat paper seem to fall more slowly than the crumpled paper.
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So, based on the result of our experiment, we can say, at least here on Earth, objects appear to fall at different rates, not because they have different masses or weights but because of air resistance: the force that the Earth's atmosphere has on objects as they fall.
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And, hey, if you don't believe me, tell you what.
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Next time you go to the Moon, take a feather and a hammer with you and try it for yourself.
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Vocabulario y notas de pronunciación para esta lección

Esta lección de conversación de nivel A2 se basa en el vídeo “Danger! Falling Objects: Crash Course Kids .1”. Las palabras que más se repiten: object, fall, Earth, paper, hammer. Este vídeo tiene 36 frases y 661 palabras para practicar shadowing. La parte hablada dura 3:21. El hablante habla rápido, unas 197 palabras por minuto, así que espera sonidos enlazados y reducidos. El 87 % de las palabras está entre las 3.000 más comunes del inglés, por lo que el vocabulario es fácil de seguir. 7 de sus 36 frases son preguntas, así que sirve para practicar la entonación de las preguntas y las respuestas cortas.

Vocabulario clave de este vídeo

15 palabras del vídeo que vale la pena aprender, con su pronunciación y significado:

PalabraPronunciaciónSignificado
hammer sustantivo/ˈhæmɚ/martillo
feather sustantivo/ˈfɛðə/pluma, péndola
atmosphere sustantivo/ˈætməsˌfɪɹ/atmósfera, aire
gravity sustantivo/ˈɡɹævɪti/gravedad
experiment sustantivo/ɪkˈspɛɹ.ə.mənt/experimento
desk sustantivo/dɛsk/escritorio, pupitre
knock verbo/nɑk/llamar a, golpear
friction sustantivo/ˈfɹɪkʃən/fricción
astronaut sustantivo/ˈæstɹəˌnɔt/astronauta
ordinary adjetivo/ˈɔɹdɪnɛɹi/ordinario
differently adverbio/ˈdɪf.ə.ɹənt.li/diferentemente
metre sustantivo/ˈmiːtəɹ/metro
falcon sustantivo/ˈfælkən/halcón, falcón (disused)
crumple verbo/ˈkɹʌmpəl/arrugar, ajar
clumsy adjetivo/ˈklʌmzi/patoso, torpe

Phrasal verbs que vas a escuchar

PalabraPronunciaciónSignificado
make up verbo/ˌmeɪk ˈʌp/reponer, suplir

Pronunciación a tener en cuenta

El hablante usa 9 contracciones y formas reducidas, como don't, you're, didn't. Dilas en su forma corta, tal como las oyes.

  • Los sonidos de “th”: feather /ˈfɛðə/, smooth /smuːð/, earthbound /ˈɝθbaʊnd/
  • Palabras largas — cuida el acento: experiment /ɪkˈspɛɹ.ə.mənt/, ordinary /ˈɔɹdɪnɛɹi/, differently /ˈdɪf.ə.ɹənt.li/

Cómo practicar con este vídeo

  1. Escucha el vídeo entero una vez sin hablar y anota las palabras que no conoces.
  2. Empieza a velocidad 0,75×, haz shadowing frase por frase y vuelve a la velocidad normal cuando te resulte fácil.
  3. Grábate y compara con el original, prestando atención a palabras como hammer, feather, atmosphere.

¿Qué es la Técnica de Shadowing?

Shadowing es una técnica de aprendizaje de idiomas respaldada por la ciencia, desarrollada originalmente para la formación de intérpretes profesionales y popularizada por el políglota Dr. Alexander Arguelles. El método es simple pero poderoso: escuchas audio en inglés nativo y lo repites en voz alta de inmediato, como una sombra que sigue al hablante con solo 1-2 segundos de retraso. A diferencia de la escucha pasiva o los ejercicios de gramática, el shadowing obliga a tu cerebro y músculos de la boca a procesar y reproducir simultáneamente patrones de habla reales. Las investigaciones muestran que mejora significativamente la precisión de la pronunciación, la entonación, el ritmo, el habla conectada, la comprensión auditiva y la fluidez al hablar, convirtiéndola en una de las metodologías más efectivas para la preparación del IELTS Speaking y la comunicación en inglés en el mundo real.

Técnica de shadowing: lee la guía completa paso a paso →