쉐도잉 연습: States of Matter | Solid Liquid Gas - 영상으로 영어 말하기 배우기

레슨 만드는 중...
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This is water.
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This is water.
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Whoops.
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This is water.
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But why does it look and behave so differently?
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We're going to find out together as we explore the different states of matter.
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Everything is made of matter.
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Things like this.
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Matter makes up all the stuff in the universe.
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Anything that takes up space and has mass is matter.
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All matter is made of atoms, which are in turn made of protons, neutrons, and electrons.
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Atoms hang out together to form molecules, which are the building blocks for all types of matter.
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Both atoms and molecules are held together by a form of potential energy called chemical energy.
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Matter exists in different states.
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Today, we are going to investigate the three most common states.
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Solid state, liquid state, and gaseous or gas state.
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In a solid, particles are packed tightly together, so they don't move much.
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The forces between particles are so strong that the particles cannot move freely, but can only vibrate.
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Because of this, particles in a solid have very low kinetic energy.
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Kinetic energy is the energy that an object has because of its motion.
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Solids have a definite shape, as well as definite volume and mass, and don't conform to the shape of a container that they're placed inside.
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Conform just means to change in order to fit.
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Solids are true to themselves.
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They don't change for anyone, unless they get really uncomfortable under pressure or things begin to heat up.
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Solids also have high density, which means that their particles are packed tightly together.
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Solids can only change their shape by an outside force, like this.
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In a liquid, the particles are more loosely packed than in a solid and are able to flow around each other, giving the liquid an indefinite shape.
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Therefore the liquid will conform to the shape of its container.
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There!
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So cats must be liquid.
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If I sit, I sit.
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In a gas, the particles have tons of space between them and high kinetic energy.
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Like we'll see with this smoke machine, a gas has no definite shape or volume.
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If uncontrolled, the particles of a gas will spread out indefinitely, like this.
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If confined, the gas will expand to fill its container.
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Let's observe this with some smoke-filled bubbles.
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The smoke is a gas we can see and the bubbles are a flexible liquid.
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As they stretch around the gas, they trap it.
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The bubble becomes a container for the gas.
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When they pop, the gas is released and dissipates.
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Understanding that because gas is matter, it must have weight in mass is a hard concept to understand unless you can see it.
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So I have a really simple way for us to observe this in action.
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This is a balance I've created with paper bags on both ends.
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Right now, both of these bags are filled with the same mixture of gases, the same gas that I'm breathing in right now, but let's change that.
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Now that we're goggled up, we're going to combine two very common substances, baking soda and vinegar.
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This chemical reaction creates carbon dioxide gas that we will pour into this bag.
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Do you see it going down just a little bit?
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As the carbon dioxide gas sinks into the bag, it's heavier than the mixture of gases on the other end.
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If you're still here liking this video, hit that subscribe button so you never miss an episode.
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You may have heard of or even observed ooblick first hand.
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It's a non-Newtonian fluid, a term for fluids that change viscosity or how easily they flow under stress.
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When you allow ooblick to flow through your fingers, it acts like a liquid, but if you apply rapid force, solidifies and can even tear.
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Adding or removing energy from matter causes a physical change, as matter moves from one state to another.
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For example, removing energy from liquid water causes it to become ice,
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a solid, and adding thermal energy or heat to liquid water causes it to become a vapor or a gas.
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This energy either strengthens or weakens the force holding the molecules together or the kinetic energy the particles have.
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We can observe this happening with these glow sticks.
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I have these three glow sticks that are all the same color and temperature.
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I've already cracked them open and started the chemical reaction.
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That's what makes them glow.
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If you want to learn the science behind this reaction, you can check out this video.
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You might be able to see already that there are different temperatures in each one of these glass containers.
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In this one we have cold water with ice, this is room temperature, and this is hot water.
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Let's see how the glow sticks change behavior when we place them in each container.
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We're going to wait for five minutes and see what changes.
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You can't see the differences too well because of all of these lights so let's take care of that.
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You can see a difference, especially here between the hot water and the cold water.
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Why do you think this happened?
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First, let's get these lights back on.
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Much better.
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Chemical reactions happen slower at lower temperatures and faster at higher temperatures
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because the molecules are moving faster at higher temperatures and slower at lower temperatures.
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The more heat energy, the more movement or kinetic energy that the molecules have.
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When heat is applied to a solid, its particles begin to vibrate faster and its particles begin to move farther apart.
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When the substance reaches a certain combination of temperature and pressure,
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its melting point, the solid will begin to melt and turn into a liquid.
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When heat is removed, the opposite happens.
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The particles slow down and move closer together.
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If enough heat is removed, the substance begins to freeze.
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When a solid is converted directly into a gas without going through a liquid phase, the process is known as sublimation.
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A few volatile substances will undergo sublimation at room temperature and pressure, such as frozen carbon dioxide or dry ice.
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The dry Ice is a solid, but you can see that gas coming off of it and crawling over the surface of the desk.
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Vaporization is the changing of a liquid to a gas
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and can occur through either evaporation or boiling like we're attempting to do right here.
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Because the particles in a liquid are in constant motion, they frequently bump into each other and each collision causes energy to be transferred.
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Once enough energy is transferred to particles here near the surface, they may be knocked completely away as free gas particles, as you can see right here.
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Condensation occurs when gas loses energy and the particles come together to form a liquid.
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For example, water vapor condenses into liquid water on the outside of your glass on a warm day.
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The warm water vapor bumps into the side of the cold glass and forms these little drops of water.
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Matter is changing state all around you.
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See how many examples you can find today.
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And if you want to learn more science, you can check out this video next.
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It's too intense.
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The ooblick is too intense.

맥락 및 배경

이 비디오는 물질의 상태에 대해 탐구하는 내용을 담고 있습니다. 주로 고체, 액체, 기체의 세 가지 물질 상태를 설명하며, 각각의 성질과 행동 방식을 이해하는 데 중점을 두고 있습니다. 이 정보를 통해 학생들은 영어로 과학적 개념을 배우고, 이를 일상 생활에 적용할 수 있는 기회를 제공합니다. 특히, 유튜브 영어 공부와 같은 플랫폼에서 제공되는 시청 경험은 학생들이 자연스럽게 영어 회화 연습을 할 수 있는 좋은 기회를 제공합니다.

일상 대화를 위한 5가지 핵심 문구

  • “이것은 물입니다.” (This is water.)
  • “입자가 서로 붙어 있습니다.” (Particles are packed together.)
  • “고체는 확정된 형태를 가지고 있습니다.” (Solids have a definite shape.)
  • “액체는 그릇의 형태를 맞춥니다.” (Liquids conform to the shape of their container.)
  • “기체는 자유롭게 퍼질 수 있습니다.” (Gases can spread out freely.)

단계별 섀도잉 가이드

shadowspeak 기술을 활용하여 영어 발음 교정 및 유창함을 계속 발전시키세요. 이 비디오에서 설명되는 과학적 내용을 따라 하면서, 다음 단계를 따르십시오:

  1. 비디오 시청: 처음에는 전체 비디오를 시청하여 내용을 이해하세요. 핵심 문구와 발음을 집중적으로 들으세요.
  2. 부분 나누기: 비디오를 여러 번 다시 시청하면서 각 문장을 나누어 소리 내어 읽습니다. 예를 들어 “이것은 물입니다.” 같은 문장을 반복하여 말해보세요.
  3. 쉐도잉 연습: 원어민의 발음을 듣고 똑같이 따라 하세요. 특히 발음과 억양에 주의하여 말해보세요.
  4. 반복 연습: 자주 사용되는 문구들을 더 많이 연습하여, 이를 일상 대화에 적용해보세요. 예를 들어 고체와 액체의 특성에 대해 친구와 이야기해보세요.
  5. 피드백 받기: 친구나 선생님에게 발음을 들어봐 달라고 요청하여 피드백을 받아보세요. 이를 통해 더욱 발전할 수 있습니다.

이러한 방법들을 통해 영어 회화 연습을 보다 효과적으로 할 수 있습니다. 비디오 내용을 통해 배운 것을 바탕으로 지속적으로 연습해 나가면, 영어 실력이 향상될 것입니다.

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.