跟读练习: Introduction to high school physics | Khan Academy - 通过视频学习英语口语
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Why do you fall backwards when a bus suddenly accelerates?
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What powers those launched roller coasters?
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And speaking of power, how do power stations generate electricity without using any batteries?
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We know an apple falls because the earth pulls on it, but does the apple pull on the earth as well?
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Why do astronauts in space station appear to float even though gravity still exists there?
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And why do the hottest stars in the night sky often shine blue?
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In this high school physics course, we will answer all these questions and many more.
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Physics is the science of building models to explain how the universe works.
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We take observations, describe them with math, and use those models to predict and understand the world around us.
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So what will we explore in this course?
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Well, we'll start by learning to describe motions, how to track positions, velocities, and accelerations.
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Then we'll ask, but what causes motion?
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That will lead us to the idea of forces and Newton's laws.
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We will then explore momentum and impulse tools that help engineers design things like safety cushions and crumple zones.
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Next, we dive into gravity.
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We will see how a single model can explain why apples fall on earth, why planets orbit the sun, and why astronauts seem to float inside space stations.
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Then comes electricity.
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Starting with static charges and leading up to how electricity and magnetism are connected.
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We'll discover how motors spin
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and how motion can generate energy electric current we will also explore energy how it's transformed how it's conserved
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and how it lets us model everything from roller coasters to atoms We will also dive into electromagnetic waves.
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We will learn how light behaves like a wave, helping us model how it bends, reflects and spreads.
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And how it behaves like a particle, letting us harness sunlight to generate electricity.
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But this course isn't just about watching videos.
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You will also check your understanding at every step, clear up misconceptions and apply your knowledge to real problems, building mastery as you go.
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Welcome to high school physics.
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Let's model the universe together.
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I'll see you inside.
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本课简介
在这节课中,你将深入了解物理学的基本概念和原理,尤其是运动、力、重力和电力等主题。通过各种示例,包括巴士加速时的反应、苹果为何下落以及国际空间站宇航员似乎漂浮的原因,你会学习到如何运用数学来描述和预测这些现象。这节课不仅帮助你掌握物理学相关的知识,也提高你的英语听说能力,特别是在科学领域的词汇运用上。
关键词汇与短语
- 重力 (gravity): 物体因地球或其它天体的引力而产生的力。
- 运动 (motion): 物体改变位置的状态。
- 力 (force): 造成或改变物体运动状态的因素。
- 电力 (electricity): 可以被利用来做功的能量形式。
- 动量 (momentum): 物体的质量和速度的乘积,是物体运动的量度。
- 电磁波 (electromagnetic waves): 一种能在空间中传播的波动,包括光波。
- 模型 (model): 用于描述和解释复杂现象的简化表示。
- 浮力 (buoyancy): 物体在流体中沉浮的能力,与重力平衡。
练习小贴士
为了提高你的英语口语练习效果,建议采用 shadow speech 技巧。在观看这段影片时,注重模仿说话者的语速和语调,尝试在听的同时进行跟读。你可以暂停影片,反复练习每个句子,确保能够自然流利地复述内容。尤其在讲解科学概念时,注意听清楚每一个专业术语并尝试在日常对话中使用,帮助记忆和理解。此外,利用 看YouTube学英语 的机会,结合视觉和听觉的学习方式,可以加深对知识点的理解和记忆,同时也提升你的 英语口语练习 技能。让我们一起通过这些基本概念来建模宇宙吧!
什么是跟读法?
跟读法 (Shadowing) 是一种有科学依据的语言学习技巧,最初开发用于专业口译员的培训,并由多语言者Alexander Arguelles博士普及。这个方法简单而强大:您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同,跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性,语调,节奏,连读,听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。






















