Shadowing Practice: SE-Ed: What Exploded Over Siberia in 1908? - Learn English Speaking with Video
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45 sentences
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On the morning of the thirtieth of June, 1908,
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a blinding fireball streaked across the sky over Siberia.
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Moments later, it exploded with a force that's hard to imagine.
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Eighty million trees were flattened in an instant!
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And yet, when scientists finally reached the site, there was no crater.
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So what on earth happened?
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The area around the Tunguska River was, and still is, remarkably remote,
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and the nearest witnesses were at a trading post sixty kilometres away.
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One man, who was sitting on the porch, was hurled off his chair,
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and he later recalled feeling as if his shirt had caught fire.
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The shock wave was picked up by instruments as far away as Britain!
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Stranger still, for several nights afterwards, the skies over Europe glowed,
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and Londoners could reportedly read a newspaper outdoors at midnight!
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Nobody at the time had any idea what had caused it,
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and with war and revolution sweeping through Russia,
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it would be almost two decades before anyone investigated.
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When the scientist Leonid Kulik finally arrived in 1927,
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he was convinced he'd find a giant meteorite in a crater,
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but what he found instead was even more puzzling.
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The fallen trees all pointed away from a single central point,
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yet at the very centre, trees were still standing upright!
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They'd simply been stripped of their branches, like telegraph poles.
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It's now widely accepted that the object never actually hit the ground.
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Instead, it's thought to have exploded several kilometres up,
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and only its blast reached the forest below.
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Trees farther out were knocked flat by the blast,
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whereas those directly beneath were hit from above and stayed standing.
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It may have been a thousand times stronger than Hiroshima,
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but whether it was an asteroid or a comet is still debated.
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Over the years, the mystery has fuelled some wilder theories,
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from a tiny black hole to an alien spaceship,
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but none of them stands up to scrutiny.
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Had it arrived just a few hours later,
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it could have exploded over a major city.
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That isn't just a hypothetical.
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In 2013, when a much smaller rock exploded over Chelyabinsk in Russia,
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around fifteen hundred people were injured, mostly by flying glass.
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What Tunguska showed is that the sky isn't as empty as it looks.
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Today, telescopes scan the sky for objects heading our way,
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and in 2022, NASA deliberately crashed a spacecraft into a small asteroid
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to see whether it could change its path.
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It worked so well that the asteroid's orbit got thirty-two minutes shorter!
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The more closely we watch the sky, the safer we're likely to be.
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Perhaps we owe that forest a quiet thank you.
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After all, it took the hit for us.
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Vocabulary and speaking notes for this lesson
This C1 speaking lesson is built on the video “SE-Ed: What Exploded Over Siberia in 1908?”. The speaker keeps coming back to these words: exploded, trees, sky. This video has 45 sentences and 448 words to shadow. The speech runs for 3:18. The speaker talks at a steady 136 words per minute, a comfortable pace for shadowing. Only 77% of the words are among the 3,000 most common in English, so the vocabulary is demanding.
Key vocabulary in this video
The 15 most advanced words in the video, with pronunciation and meaning:
| Word | Pronunciation | Meaning |
|---|---|---|
| explode verb | /ɪkˈsploʊd/ | To fly apart with sudden violent force; to blow up, to burst, to detonate, to go off. |
| kilometre noun | /kɪˈlɑmɪtəɹ/ | An SI unit of length equal to 10³ metres. Symbol: km |
| crater noun | /ˈkɹeɪ.tɚ/ | A hemispherical pit created by the impact of a meteorite or other object. |
| asteroid noun | /ˈæst(ə)ɹɔɪd/ | A naturally occurring solid object, which is smaller than a planet and a dwarf planet, larger than a meteoroid and not a comet, that orbits a star and often… |
| fireball noun | /ˈfaɪəɹˌbɔl/ | A ball of fire, especially one associated with an explosion, or (fiction, mythology) thrown as a weapon. |
| flatten verb | /ˈflæ.tən/ | To make something flat or flatter. |
| injure verb | /ˈɪn.d͡ʒɚ/ | To wound or cause physical harm to a living creature. |
| meteorite noun | /ˈmi.ti.əˌɹaɪt/ | A metallic or stony object or body that is the remains of a meteoroid. |
| spaceship noun | A manned vehicle that flies through space. | |
| thirtieth adjective | /ˈθɝti.əθ/ | The ordinal form of the number thirty. |
| hypothetical adjective | /ˌhaɪpəˈθɛtɪkəl/ | Based upon a hypothesis; conjectural. |
| comet noun | /ˈkɒmɪt/ | A small Solar System body consisting mainly of volatile ice, dust and particles of rock whose very eccentric solar orbit periodically brings it close enough to… |
| upright adjective | /ˈʌpɹaɪt/ | Vertical; erect. |
| scrutiny noun | /ˈskɹuː.tɪ.ni/ | Intense study of someone or something. |
| telescope noun | /ˈtɛl.əˌskoʊp/ | A monocular optical instrument that magnifies distant objects, especially in astronomy. |
Phrasal verbs you will hear
| Word | Meaning |
|---|---|
| pick up verb | To lift; to grasp and raise. |
| stand up to verb | To object to or interfere with the actions of (someone seen as bullying, pushy, or controlling). |
Pronunciation to watch
The speaker uses 5 contractions and reduced forms, such as isn't, he'd, they'd. Say them the short way, as you hear them.
- The “th” sounds: thirtieth /ˈθɝti.əθ/, hypothetical /ˌhaɪpəˈθɛtɪkəl/
- Long words — get the stress right: kilometre /kɪˈlɑmɪtəɹ/, meteorite /ˈmi.ti.əˌɹaɪt/, hypothetical /ˌhaɪpəˈθɛtɪkəl/, remarkably /ɹɪˈmɑɹkəbli/, deliberately /dɪˈlɪb.(ə.)ɹət.li/
How to practise with this video
- Listen to the whole video once without speaking and note the words you do not know.
- Shadow it sentence by sentence at normal speed, repeating each one until your rhythm matches the speaker.
- Record yourself and compare with the original, paying attention to words like explode, kilometre, crater.
What is the Shadowing Technique?
Shadowing is a science-backed language learning technique originally developed for professional interpreter training and popularized by polyglot Dr. Alexander Arguelles. The method is simple but powerful: you listen to native English audio and immediately repeat it out loud — like a shadow following the speaker with just a 1–2 second delay. Unlike passive listening or grammar drills, shadowing forces your brain and mouth muscles to simultaneously process and reproduce real speech patterns. Research shows it significantly improves pronunciation accuracy, intonation, rhythm, connected speech, listening comprehension, and speaking fluency — making it one of the most effective methods for IELTS Speaking preparation and real-world English communication.