쉐도잉 연습: Friction and Gravity | MightyOwl Science | 3rd Grade - 영상으로 영어 말하기 배우기
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Hello, this is Mighty Owl.
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Can you think about a time when you were riding your bike and you applied the brakes?
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The bike slowed down, right?
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Well, did you ever wonder why?
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Here's the answer.
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There are forces around us that cause changes to the motion of objects.
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Let me explain.
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A force that opposes motion is called friction.
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It has the power to slow things down.
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Friction is present wherever two surfaces rub over each other, such as using the brakes on a bike to stop or to slow down.
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When you use the brakes on your bike, the brake pads apply friction to the tires, and this friction slows down the motion of the bike.
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Think about riding your bike down a hill and how important friction is.
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Right?
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Friction is a force that pushes against an object to slow its motion.
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When you're riding your scooter, for example, you drag your foot on the ground to slow it down or even stop the scooter.
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You may have used friction in your life without even realizing it.
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But why does friction even exist?
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Well, friction occurs because no surface is 100% perfectly smooth.
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Rougher surfaces like grass create more friction.
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Have you ever tried to roller skate on grass?
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It's pretty difficult.
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You might even drip and fall.
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But how about roller skating on the sidewalk in front of your house?
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Well, that would be easier because the sidewalk is smoother than the grass, and therefore there's less friction.
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You can see examples of friction all around you.
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When you write with a pen, the frictional forces between the pen
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and the paper cause some of the ink particles to stick to the surface of the paper.
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Have you ever rubbed your hands together to keep warm?
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The friction between your skin causes some of the energy of motion to be converted into heat.
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Before matches were invented, people used to rub two sticks together to start a fire.
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Just be careful if you decide to try that one out yourself.
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Now the next time you walk around, think about your feet pushing off the ground.
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You're applying frictional force.
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But you might want to be careful if you're walking on an icy sidewalk sidewalk, it can get tricky because it's quite smooth and there isn't much friction for your feet to use as a grip.
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If you slip and fall, well, that's another force entirely.
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In fact, the force that pulls things down to the center of the earth is called gravity.
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That's why when you jump up from the ground, you fall back no matter how hard you try to stay up in the air.
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Wait a What about astronauts jumping on the moon and slowly falling down?
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Well, gravity also exists on the moon, but it's not as strong as it is on the Earth.
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That's why astronauts can jump higher and fall back down more slowly, because the Moon is much smaller than our planet, and its gravity is less.
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Gravity is also what holds the Earth
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and all the rest of the planets in our solar system in their orbits around the Sun.
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Thank goodness for that!
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or else our Earth would spin away from the sun and float out into outer space.
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So to sum up everything so far, gravity is a pulling force that keeps us on the ground.
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Without it, we would all be floating around in the air.
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Now that might sound great, but can you imagine if there was no gravity on Earth?
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You wouldn't be able to run, lay in your bed, or even play basketball.
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Without gravity, if you kicked a ball, It would fly away in space and it would never come back.
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Now you can't see or touch gravity, but it's always there.
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In fact, no matter how heavy or light an object is, gravity will still pull it back down to the ground.
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You can climb up a ladder and drop a watermelon, a feather, or a ball.
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It doesn't matter.
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They will all still fall back down to the ground.
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Imagine for a second you have a cannon and you shoot a cannonball straight up into the sky.
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No matter how high it goes, gravity will pull it back down to the ground.
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But what if you threw a ball away from you?
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Yep, gravity will also pull it back to the ground.
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The force of gravity brings things down no matter what direction you throw them.
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Wow, you know so much about forces now.
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But maybe something you didn't know?
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All of them in fact work together.
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Take a look at what I mean.
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Imagine you push a ball down a ramp.
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The push gets the ball rolling.
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Gravity pulls the ball down the ramp.
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Friction pushes back and slows the ball's motion.
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At the bottom of the ramp, the ball bumps into a wall.
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The wall pushes back on the ball and stops it from rolling forward.
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Well there you go!
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All the forces we talked about do really work together in real life.
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Two new forces from today, friction and gravity.
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The force that opposes motion is called friction, and it has the power to slow things down.
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The factors that affect friction are the roughness of the surfaces and the force between the two objects.
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When you drop something on the ground, it falls because of gravity.
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Gravity is a pulling force that pulls things down to the ground.
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I think that's enough about forces for today.
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See you in the next video lesson.
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Thank you.
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이 레슨의 어휘와 말하기 포인트
이 A2 수준 말하기 레슨은 영상 “Friction and Gravity”을(를) 바탕으로 합니다. 가장 자주 반복되는 단어는 다음과 같습니다: friction, gravity, force, ground, ball. 이 영상에는 섀도잉할 문장 79개와 단어 938개가 있습니다. 말하는 구간의 길이는 5:31입니다. 화자는 분당 약 170단어로, 일상 대화에 가까운 자연스러운 속도로 말합니다. 단어의 83%가 영어에서 가장 많이 쓰이는 3,000단어에 속합니다. 나머지는 연습 전에 미리 확인해 두세요. 전체 79문장 중 12문장이 질문이어서 의문문 억양과 짧은 대답을 연습하기에 좋습니다.
이 영상의 핵심 어휘
영상에 나오는 익혀 둘 만한 단어 15개를 발음, 뜻과 함께 정리했습니다.
| 단어 | 발음 | 뜻 |
|---|---|---|
| friction 명사 | /ˈfɹɪkʃən/ | 마찰 |
| sidewalk 명사 | /ˈsaɪdwɔk/ | 보도, 인도 |
| grass 명사 | /ɡɹɑːs/ | 풀, 잡초 |
| brake 명사 | /bɹeɪk/ | 브레이크, 제동기 |
| roller 명사 | /ˈɹoʊlɚ/ | 롤러 |
| skate 명사 | /skeɪt/ | 스케이트, 스케트 |
| astronaut 명사 | /ˈæstɹəˌnɔt/ | 우주비행사 |
| scooter 명사 | /ˈskuːtə(ɹ)/ | 킥 스쿠터, 스쿠터 |
| lesson 명사 | /ˈlɛs.ən/ | 수업, 과 |
| occur 동사 | /əˈkɜː/ | 일어나다, 발생하다 |
| dragon 명사 | /ˈdɹæɡən/ | 용, 룡 |
| spin 동사 | /spɪn/ | 회전하다 |
| slip 동사 | /ˈslɪp/ | 미끄러지다 |
| climb 동사 | /ˈklaɪ̯m/ | 오르다 |
| ladder 명사 | /ˈlæd.ɚ/ | 사다리, 사닥다리 |
영상에 나오는 구동사
| 단어 | 발음 | 뜻 |
|---|---|---|
| come back 동사 | 돌아오다 | |
| fall down 동사 | /fɔl ˈdaʊn/ | 떨어지다 |
따라 말해 볼 만한 문장
영상에 나오는 짧고 완결된 문장으로, 일상 대화에서 그대로 쓸 수 있습니다:
- Have you ever tried to roller skate on grass?
- Have you ever rubbed your hands together to keep warm?
- But maybe something you didn't know?
- I think that's enough about forces for today.
이 영상의 문법
화자가 가장 많이 쓰는 문형을 영상 속 실제 표현과 함께 정리했습니다.
| 문형 | 영상 속 표현 |
|---|---|
| 수동태 be + 과거분사 — 누가 하는지보다 무슨 일이 일어나는지에 초점 | is called · be converted · were invented |
| 현재완료 have/has + 과거분사 — 과거의 일이 지금도 관련이 있을 때 | Have you ever tried · Have you ever rubbed |
| “might / may” 가능성 might/may + 동사 — 가능하지만 확실하지 않은 일 | may have · might even drip · might want |
| 비교급 -er than / more … than — 두 대상을 비교 | smoother than · smaller than |
주의할 발음
화자는 you're, can't, didn't 같은 축약형과 약화된 형태를 8번 사용합니다. 들리는 대로 짧게 발음하세요.
- “th” 소리: smooth /smuːð/, feather /ˈfɛðə/
한국어 화자가 어려워하는 소리:
- /f/ — ㅍ(/p/)으로 바꾸지 말고 윗니를 아랫입술에 대기: friction /ˈfɹɪkʃən/, float /fləʊt/, feather /ˈfɛðə/, roughness /ˈɹʌf.nəs/
- /v/ — ㅂ(/b/)과 구별하기: gravity /ˈɡɹævɪti/, wherever /(h)wɛɹˈɛvɚ/, convert /kənˈvɝt/, invent /ɪnˈvɛnt/
- /r/과 /l/ 구별하기: roller /ˈɹoʊlɚ/, particle /ˈpɑɹtək(ə)l/
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, friction, sidewalk, grass 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.