Shadowing Practice: What is a Black Hole? - Learn English Speaking with Video
Creating lesson...
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Space place in a snap.
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What is a black hole?
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Space is a pretty dark place.
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Even so, some areas are darker than others.
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Nothing is darker than a black hole.
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A black hole is an area of such immense gravity that nothing, not even light, can escape from it.
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Black holes form at the end of some stars' lives.
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The energy that held the star together disappears and it collapses in on itself, producing a magnificent explosion.
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Here's where things get crazy.
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All of that material left over from the explosion, many times the mass of our sun, falls into an infinitely small point.
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Black holes can form in many ways, though.
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And large black holes can have tens, two millions of times the mass of our sun trapped in a point smaller than the tip of a pin.
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Some black holes trap more and more material as their mass increases.
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The point where all that mass is trapped is called a singularity.
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It may be infinitely small, but its influence is enormous.
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Imagine a circle with a singularity in the middle.
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The gravity on the inside of the circle is so strong that nothing can escape.
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It sucks in everything, even light.
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That's why it's black.
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This circle is known as the event horizon.
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An event horizon is probably what you are thinking of when you think of a black hole.
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What would happen, you might wonder, If we took a spacecraft near a black hole's event horizon, the answer?
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Spaghettification.
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That's the technical term at least.
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As our spacecraft approaches, the gravity will be
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so much stronger on the side closer to the black hole than at the other side
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that it will get completely stretched out like a piece of spaghetti.
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Try as you may.
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You would be hard -pressed to find anything weirder or cooler than a black hole.
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Presented by NASA SpacePlace.
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For a transcript of this video and a fun downloadable poster, visit the space place.
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Vocabulary and speaking notes for this lesson
This video has 31 sentences and 333 words to shadow. The speech runs for 2:58. The speaker talks at a steady 112 words per minute, a comfortable pace for shadowing. Only 81% of the words are among the 3,000 most common in English, so the vocabulary is demanding.
Key vocabulary in this video
15 words from the video worth learning, with pronunciation and meaning:
| Word | Pronunciation | Meaning |
|---|---|---|
| trap noun | /tɹæp/ | A machine or other device designed to catch (and sometimes kill) animals, either by holding them in a container, or by catching hold of part of the body. |
| gravity noun | /ˈɡɹævɪti/ | Of an activity such as a ceremony, a person's conduct, etc.: the quality of being deeply serious and solemn, especially in a dignified manner; seriousness… |
| horizon noun | /həˈɹaɪ.zən/ | The visible horizontal line (in all directions) where the sky appears to meet the earth in the distance. |
| explosion noun | /ɛkˈsploʊ.ʒən/ | A violent release of energy (sometimes mechanical, nuclear, or chemical); an act or instance of exploding. |
| spacecraft noun | /ˈspeɪsˌkɹæft/ | A vehicle that travels through space. |
| infinitely adverb | /ˈɪnfɪnɪtli/ | In an infinite manner; as of anything growing without bounds; endlessly. |
| suck verb | /sʌk/ | To use the mouth and lips to pull in (a liquid, especially milk from the breast). |
| stretch verb | /stɹɛt͡ʃ/ | To lengthen by pulling. |
| enormous adjective | /ɪˈnɔː.məs/ | Extremely large; greatly exceeding the common size, extent, etc. |
| snap verb | /snæp/ | To fracture or break apart suddenly. |
| poster noun | /ˈpoʊstɚ/ | A picture of a celebrity, an event etc., intended to be attached to a wall. |
| collapse verb | /kəˈlæps/ | To break apart and fall down suddenly; to cave in. |
| disappear verb | /dɪsəˈpɪɹ/ | To vanish. |
| magnificent adjective | /mæɡˈnɪfəsənt/ | Grand, elegant or splendid in appearance. |
| immense adjective | /ɪˈmɛns/ | Huge, gigantic, very large. |
Grammar in this video
The structures the speaker uses most, with the exact words from the video:
| Structure | In the video |
|---|---|
| Passive voice be + past participle — the focus is on what happens, not who does it | is trapped · is known |
| Comparatives -er than / more … than — comparing two things | darker than · smaller than · cooler than |
| Possibility with “might / may” might/may + verb — something that is possible but not certain | may be · might wonder |
| Future with “will” will + verb — a decision, promise or prediction | will be · will get |
Pronunciation to watch
- The “sh” and “zh” sounds: explosion /ɛkˈsploʊ.ʒən/, spaghettification /spəˌɡɛtəfəˈkeɪʃən/
- Long words — get the stress right: infinitely /ˈɪnfɪnɪtli/, magnificent /mæɡˈnɪfəsənt/, singularity /ˌsɪŋɡjəˈlæɹətɪ/, spaghettification /spəˌɡɛtəfəˈkeɪʃən/
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 trap, gravity, horizon.
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.