쉐도잉 연습: Rock Candy! - 영상으로 영어 말하기 배우기
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Have you ever wanted to make your own rock candy?
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Well, today I am going to teach you how with my rock candy science experiment.
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Hi everyone, I'm Emily Calandrelli, MIT engineer and host of Emily's Flunder Lab.
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And on my channel, we learn about all things space and science.
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So grab your sugar and get ready for some sweet science.
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Today I'm going to teach
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you how to make colorful rock candy sticks using science here's
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what you need rock candy sticks one cup of water three
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cups of white granulated sugar plus a little extra to sprinkle
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on your rock candy sticks a few different glasses some clothes pins
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and some food coloring the first thing
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you want to do is you want to get the bottom third of your rock candy sticks wet
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you can do this by running it under water in the sink
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i'm just going to do it like this here
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and then after you do
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that for a few seconds lay them out on a plate just like that
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and we are going to sprinkle some sugar on top of them
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you just want to completely coat your rock candy sticks get
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as much sugar on there as possible might be a little overkill
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but that's okay just go ahead
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and roll it around in the sugar set your rock candy
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sticks aside to dry for at least an hour ideally overnight once your candy sticks are completely dry
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you are ready to make your saturated solution of sugar here's how you do
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that add one cup of water to a pot
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and then add three cups of white granulated sugar one stir
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that in so that it dissolves
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and as we heat this up this will dissolve even better there's two stir
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that in what we are doing here is we are saturating the solution meaning
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we're adding as much sugar as humanly possible to this water at this temperature
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it will not be able to even
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if it wanted to dissolve more sugar stir
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that in now put your heat on high what we want to do is bring our solution to a boil
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and allow it to boil for two minutes.
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Now that your solution is boiling, give it a good mix.
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Make sure all of that sugar has dissolved.
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And after that two minute timer is up, go ahead and turn your soap top off.
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And we're going to let this cool for about 15 minutes before we transfer it to our glasses.
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As your solution cools, we can prepare our glasses with our rot candy sticks.
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So go ahead and we want it to look like this.
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We want it to be suspended in the glass not touching the bottom
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and not touching the sides and clothespins work really well for this.
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For bigger glasses I'll show you how to do it.
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So we have a rock candy stick that has dried overnight.
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One clothespin here I'm going to measure make sure it's not touching the bottom there.
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I'm going to do one of these and then a second one right here and place it right in the center there.
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So now that they are all prepared
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and they're not touching the bottom they're not touching the sides go ahead
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and take them out
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because we are going to put our sugar solution in the glasses one thing
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you can do to prepare your glasses for the still pretty
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hot solution is to run them under hot water to make sure
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that you're not going to break your glasses by pouring in the hot sugar solution
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because we were measuring our rock candy sticks in here just clean them out make sure
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there's no more sugar inside your glasses and just like
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that you are ready to pour in your saturated sugar solution
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so very carefully
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because it'll still be a little hot pour it into as many glasses as you like careful with the glasses
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because they will be hot
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and depending on the size of your glasses you may have more glasses
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you may have less now for the fun part we are going to make this colorful I'm going to use purple,
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stir it with a spoon.
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Oh, beautiful.
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Look at that.
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Stir it up. And then finally, blue.
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Now we are ready to put in our rock candy sticks into the solution
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and I recommend putting the glasses where you're going to leave them for the next seven days
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because we ideally you would leave these sitting letting them crystallize for a week.
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The science experiment takes patience but the end result.
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It's pretty amazing.
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So go ahead, once they're there where you want them, carefully, slowly place your rock candy stick in the solution.
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You want to cover up as much of the stick as possible.
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I have found that long skinny glasses work really well for this because you're not using as much solution, but you're covering that entire rock stick.
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Our beautiful blue one.
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So now we just wait.
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And what's going to happen as we wait over the next few days?
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Well, crystals are going to start building on your rock candy sticks because the solution is going to cool.
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Why does that matter?
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Well, hot sugar solution can hold more sugar than cold sugar solution.
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And as the solution cools, that sugar is going to want to jump out of the solution to undissolve from the solution.
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That's why we covered our rock candy sticks with sugar, because that sugar that wants to undissolve, it wants to hold on to something.
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And that little something was our seed crystals on our rot candy sticks.
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So day by day, you will see more crystals building on your sticks.
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And after the first day, they're a little bit small, but be patient because they get bigger and bigger and bigger.
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And at the end of a week, you'll have a very beautiful rot candy crystal.
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These were some rot candy crystals I prepared ahead of time.
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And after a few days of waiting, it'll look like this.
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You'll notice some crystals growing on your rock candy stick,
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but you'll also notice some sugar crystals on the bottom of the glass and right on the surface.
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So to get your rock candy out, you want to take your clothespin
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and just kind of break the surface of the sugar just like
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that because we just want to be able to pull our stick out easily.
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once you've done that wiggle your candy stick around
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and take it out and you'll notice it's still dripping
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that sugar liquid there get your clothespin bring it to another glass
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and let it drip for just like 10 minutes that's all you need
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and then once
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that happens you'll be able to have a delicious rock candy crystal this one has been waiting in
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that solution for about three days
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so you can tell it's not very big that's why patience is key with this experiment
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this one has only been in there for about two days so it's quite small and a word to the wise
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use rot candy sticks instead of skewers we use skewers here and you'll notice some variability
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because they have a hard time holding on to the sugar
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when we coated our sticks with sugar at the start for our seed crystals.
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Some of them stayed on.
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Some of them fell off.
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Rot candy sticks are much better at this.
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So when you're shopping, get rot candy sticks.
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Our sugar solution became super saturated as it cooled down and created all of these beautiful crystals.
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This one was waiting for two days.
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This one was three days.
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These were all four days.
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And this big guy was eight days.
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You can see it mostly collected at the top here
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because again we used a skewer and all of those seed crystals fell off of the bottom.
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So none of the crystals grew down here, but they very much grew up there, creating quite the unique crystal.
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Very cool.
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These sugar crystals have these beautiful geometric shapes because crystals occur when atoms arrange themselves in highly organized repeating patterns,
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creating these beautiful geometric shapes thank you for making rock candy with me today
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if you like this one be sure to check out my best -selling stay curious
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and keep exploring book series for 99 more science experiments i'm emily calendrelli subscribe for all things science
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and space and remember stay curious and keep exploring i'll see you next time
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이 레슨의 어휘와 말하기 포인트
가장 자주 반복되는 단어는 다음과 같습니다: candy, sugar, stick, solution, rock. 이 영상에는 섀도잉할 문장 121개와 단어 1436개가 있습니다. 말하는 구간의 길이는 8:52입니다. 화자는 분당 약 162단어로, 일상 대화에 가까운 자연스러운 속도로 말합니다. 단어의 85%가 영어에서 가장 많이 쓰이는 3,000단어에 속합니다. 나머지는 연습 전에 미리 확인해 두세요.
이 영상의 핵심 어휘
영상에 나오는 익혀 둘 만한 단어 15개를 발음, 뜻과 함께 정리했습니다.
| 단어 | 발음 | 뜻 |
|---|---|---|
| candy 명사 | /ˈkæn.di/ | 캔디, 사탕 |
| crystal 명사 | /ˈkɹɪstəl/ | 결정 |
| stir 동사 | /stɝ/ | 휘젓다 |
| experiment 명사 | /ɪkˈspɛɹ.ə.mənt/ | 실험 |
| pour 동사 | /poɹ/ | 붓다 |
| boil 동사 | /bɔɪ(ə)l/ | 비등하다, 끓다 |
| carefully 부사 | /ˈkɛɹf(ə)li/ | 주의하여, 조심스럽게 |
| curious 형용사 | /ˈkjʊɹ.i.əs/ | 호기심이 많은, 궁금하다 |
| coat 명사 | /ˈkoʊ̯t/ | 코트, 외투 |
| explore 동사 | /ɪkˈsploɹ/ | 탐험하다 |
| patience 명사 | /ˈpeɪ̯.ʃəns/ | 참을성, 인내 |
| occur 동사 | /əˈkɜː/ | 일어나다, 발생하다 |
| liquid 명사 | /ˈlɪk.wɪd/ | 액체 |
| collect 동사 | /ˈkɑlɪkt/ | 수집하다 |
| delicious 형용사 | /dɪˈlɪ.ʃəs/ | 맛있다 |
영상에 나오는 구동사
| 단어 | 발음 | 뜻 |
|---|---|---|
| cool down 동사 | /kuːl ˈdaʊn/ | 식다, 식히다 |
| cover up 동사 | 감추다, 덮어버리다 |
이 영상의 문법
화자가 가장 많이 쓰는 문형을 영상 속 실제 표현과 함께 정리했습니다.
| 문형 | 영상 속 표현 |
|---|---|
| 현재완료 have/has + 과거분사 — 과거의 일이 지금도 관련이 있을 때 | Have you ever wanted · has dissolved · has dried |
| “might / may” 가능성 might/may + 동사 — 가능하지만 확실하지 않은 일 | might be · may have |
| 과거진행 was/were + -ing — 과거의 어느 시점에 진행 중이던 동작 | were measuring · was waiting |
| 동사 + -ing enjoy, keep, stop… + -ing — 뒤에 -ing형이 오는 동사 | keep exploring |
주의할 발음
화자는 I'm, you'll, you're 같은 축약형과 약화된 형태를 29번 사용합니다. 들리는 대로 짧게 발음하세요.
- “sh”와 “zh” 소리: patience /ˈpeɪ̯.ʃəns/, delicious /dɪˈlɪ.ʃəs/
- 긴 단어 — 강세 위치에 주의: experiment /ɪkˈspɛɹ.ə.mənt/, ideally /aɪˈdi.ə.li/, geometric /ˌd͡ʒiː.əʊˈmɛt.ɹɪk/, variability /ˌvæɹ.i.əˈbɪl.ə.ti/
한국어 화자가 어려워하는 소리:
- /f/ — ㅍ(/p/)으로 바꾸지 말고 윗니를 아랫입술에 대기: carefully /ˈkɛɹf(ə)li/, colorful /ˈkʌl.əɹ.fl̩/
- /v/ — ㅂ(/b/)과 구별하기: overnight /əʊvə(ɹ)ˈnaɪt/, dissolve /dɪˈzɑlv/, overkill /ˈoʊ.vɚˌkɪl/, variability /ˌvæɹ.i.əˈbɪl.ə.ti/
- /z/ — ㅈ이 아니라 성대를 울리는 /s/: organize /ˈɔɹɡənaɪz/, dissolve /dɪˈzɑlv/, crystallize /ˈkɹɪstəlaɪz/
이 영상으로 연습하는 방법
- 먼저 말하지 않고 영상을 끝까지 듣고 모르는 단어를 적어 둡니다.
- 0.75배속으로 한 문장씩 섀도잉을 시작하고, 익숙해지면 보통 속도로 돌아갑니다.
- 자신의 목소리를 녹음해 원본과 비교하고, candy, crystal, stir 같은 단어에 특히 주의합니다.
쉐도잉이란? 영어 실력을 빠르게 키우는 과학적 방법
쉐도잉(Shadowing)은 원래 전문 통역사 훈련을 위해 개발된 언어 학습 기법으로, 다언어 학자인 Dr. Alexander Arguelles에 의해 대중화된 방법입니다. 핵심 원리는 간단하지만 매우 강력합니다: 원어민의 영어를 들으면서 1~2초의 짧은 지연으로 즉시 소리 내어 따라 말하는 것——마치 '그림자(shadow)'처럼 화자를 따라가는 것입니다. 문법 공부나 수동적인 청취와 달리, 쉐도잉은 뇌와 입 근육이 동시에 실시간으로 영어를 처리하고 재현하도록 훈련합니다. 연구에 따르면 이 방법은 발음 정확도, 억양, 리듬, 연음, 청취력, 말하기 유창성을 크게 향상시킵니다. IELTS 스피킹 준비와 자연스러운 영어 소통을 원하는 분들에게 특히 효과적입니다.