Shadowing Practice: What Are Tectonic Plates? Our Earth and Its Movements - Learn English Speaking with Video
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Oceans, mountains, and continents.
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These are just some of the features that make up the world that we live in.
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The Earth's surface makes up only a tiny fraction of our planet,
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which we call the crust.
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But do you know what lies beneath it?
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To get an idea of how much of the earth is crust,
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take a look at this peach.
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A peach has three layers.
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A thin, hard skin on the outside,
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a thick layer of yellow flesh,
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and a stone on the inside.
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Like this peach, earth is also made up of several layers.
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crust, the mantle, and the core.
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Can you see how thin the crust is compared to the rest of Earth's layers?
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Under the crust lies a semi-liquid mantle layer of molten magma,
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which can be divided into the upper mantle and the lower mantle.
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Together, the upper mantle and the crust are collectively known as the lithosphere.
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Below the mantle lies the core,
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which can also be divided into the outer core and inner core.
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The outer core is made of iron and nickel.
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But because temperatures are so high here,
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you find these metals in their molten, liquid form.
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At the center of the Earth,
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beneath the outer core, lies the inner core.
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This layer is a solid ball made of iron as well.
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This is the hottest part of the Earth,
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with temperatures as high as the surface of the Sun.
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The inner core stays solid because Earth's gravity is so strong the metals cannot melt,
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despite how hot it is.
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If you took a look at a world map,
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it would be easy to think that the Earth has always looked like this and always will.
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However, this is just how the Earth's surface looks currently,
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because it is changing all the time.
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Most of these changes happen in the lithosphere.
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Earth's lithosphere is divided into many tectonic plates that are different in shapes and sizes,
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but fit tightly together like a jigsaw puzzle.
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There are seven large key plates,
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and several smaller plates, and our lands and oceans lie on top of them.
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Did you know that all of the continents that we know today once formed a single supercontinent?
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This supercontinent existed 335 million years ago,
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and we call it Pangaea.
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Over millions of years, the tectonic plates which hold the continents moved around,
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smashing into each other and then pulling apart.
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This process is called plate tectonics,
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but is sometimes also known as continental drift.
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If you look closely, you can see where some of the edges of the continents line up,
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like the edges of Africa and South America.
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of animals that couldn't swim or fly have been found on different continents,
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providing further evidence that all the continents were previously connected.
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So how did the plates manage to move the continents to where they are today?
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To find out, we'll have to look at what lies under the plates.
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Within the Earth, there is tremendous heat and pressure,
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and this drives slow, circular movements,
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called convection currents, within the mantle layer,
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which in turn cause the plates to move.
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Different tectonic plates meet each other at their boundaries,
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which are known as plate margins.
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There are three types of plate margins depending on what kind of movement occurs between the two interacting plates.
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At a constructive or divergent plate margin,
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two plates move away from each other.
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This movement forms a gap between plates which allows magma to seep through
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and cool to form new geological features such as volcanoes.
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The Mid-Atlantic Ridge under the Atlantic Ocean is an example of a constructive plate margin.
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At a destructive or convergent plate margin,
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two plates move towards each other.
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This can either cause one plate to go under and the other to be pushed up,
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or two plates to smash together and push upwards.
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This process can form majestic fold mountains and deep trenches and often create powerful earthquakes.
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This is how the Himalayas in Nepal,
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home of Earth's highest mountain, Mount Everest, were formed.
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At a conservative plate margin,
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two plates slide against each other,
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either in different directions or in the same direction at different speeds.
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These parts of the world also experience earthquakes due to the movement of these plates.
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An example of this is the San Andreas Fault in California.
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Our Earth is a dynamic and active planet,
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and its surface is composed of many individual plates that are always on the move due to the convection currents within.
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The plates are moving far too slowly for us to notice,
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yet they are responsible for the most devastating tectonic hazards,
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like volcano eruptions, earthquakes, and tsunamis.
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Vocabulario y notas de pronunciación para esta lección
Esta lección de conversación de nivel C1 se basa en el vídeo “What Are Tectonic Plates? Our Earth and Its Movements”. Las palabras que más se repiten: plate, core, continents, mantle, layer. Este vídeo tiene 80 frases y 786 palabras para practicar shadowing. La parte hablada dura 6:31. El hablante mantiene un ritmo constante de unas 121 palabras por minuto, cómodo para el shadowing. Solo el 78 % de las palabras está entre las 3.000 más comunes del inglés, por lo que el vocabulario es exigente.
Vocabulario clave de este vídeo
Las 15 palabras más avanzadas del vídeo, con su pronunciación y significado:
| Palabra | Pronunciación | Significado |
|---|---|---|
| mantle sustantivo | /ˈmæn.təl/ | manto, pendil |
| continent sustantivo | /ˈkɑntɪnənt/ | continente |
| crust sustantivo | /kɹʌst/ | repulgue, repulgo |
| tectonic adjetivo | tectónico | |
| lithosphere sustantivo | litósfera | |
| peach sustantivo | /ˈpiːt͡ʃ/ | durazno, melocotón |
| melt verbo | /mɛlt/ | derretirse, fundirse |
| convection sustantivo | /kənˈvɛkʃən/ | convección |
| magma sustantivo | /ˈmæɡ.mə/ | magma |
| supercontinent sustantivo | supercontinente | |
| volcano sustantivo | /vɑlˈkeɪ.noʊ/ | volcán |
| constructive adjetivo | /kənˈstɹʌktɪv/ | constructivo |
| smash verbo | /smæʃ/ | estrellar, destrozar |
| compose verbo | /kəmˈpəʊz/ | componer |
| convergent adjetivo | /kənˈvɜː.d͡ʒənt/ | convergente |
Phrasal verbs que vas a escuchar
| Palabra | Pronunciación | Significado |
|---|---|---|
| make up verbo | /ˌmeɪk ˈʌp/ | reponer, suplir |
| find out verbo | averiguar, anoticiarse | |
| go under verbo | hundirse, irse a pique | |
| line up verbo | /laɪnˈʌp/ | alinear |
| move around verbo | movilizarse |
Gramática en este vídeo
Las estructuras que más usa el hablante, con las palabras exactas del vídeo:
| Estructura | En el vídeo |
|---|---|
| Voz pasiva be + participio pasado — importa lo que ocurre, no quién lo hace | is also made · is compared · can be divided |
| Present perfect have/has + participio pasado — una acción pasada que sigue importando ahora | has always looked · have been found |
Pronunciación a tener en cuenta
- Los sonidos de “sh” y “zh”: convection /kənˈvɛkʃən/, smash /smæʃ/, eruption /ɪˈɹʌpʃən/, fraction /ˈfɹæk.ʃən/
Cómo practicar con este vídeo
- Escucha el vídeo entero una vez sin hablar y anota las palabras que no conoces.
- Haz shadowing frase por frase a velocidad normal, repitiendo cada una hasta que tu ritmo coincida con el del hablante.
- Grábate y compara con el original, prestando atención a palabras como mantle, continent, crust.
¿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.