跟读练习: Terminal Velocity and Air Resistance - 通过视频学习英语口语
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When an object or person falls from a great height, they are pulled towards the surface of the Earth by the force of gravity.
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As the object or person falls, they accelerate meaning they move faster and faster towards the ground.
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However, the air resistance or drag force pushes against them, slowing them down.
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At some point, the drag force becomes equal to the force of gravity, and the object or person stops accelerating.
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This is called terminal velocity, which can be different for different objects depending on their shape, size, and mass.
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Terminal velocity for a human falling through the air is around 120 miles per hour, or about 193 kilometers per hour,
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which is far too fast to safely reach the ground.
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This is where a parachute comes in.
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A parachute increases air resistance due to its shape and size, creating a larger surface area for the air to push against.
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This slows down the person or object's descent, allowing them to land safely on the ground.
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you .
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It's Okay, let's go through it one more time.
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you When a skydiver leaps from a plane, they initially accelerate due to the force of gravity.
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Thank you.
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As they fall, air resistance gradually increases until it balances with the force of gravity, and the skydiver reaches terminal velocity.
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At this point, the Skydiver deploys their parachute, which increases air resistance and slows their descent.
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allowing them to land safely on the ground.
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you Try designing and making your own parachute to slow the fall of small objects.
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Use a stopwatch to time the objects fall.
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you you Thanks for watching.
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Worksheets relating to this short video can be downloaded by creating a free account at ngscience .com.
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背景与语境
在这个视频中,讲者讨论了物体在自由落体时的终极速度和空气阻力。当人或物体从高处下落时,重力将其向地面拉动。在下落过程中,物体的速度不断加快,但空气阻力作用于物体,减缓其速度。视频不仅介绍了这些基本概念,还详细解释了伞的作用,如何通过增加空气阻力来安全着陆。这些生动的讲解不仅吸引观众的注意,也促进了他们对物理知识的理解,非常适合英语学习者进行跟读练习。
日常沟通的五个常用短语
- 重力的力量 - The force of gravity
- 空气阻力 - Air resistance
- 终极速度 - Terminal velocity
- 降低速度 - Slow down
- 安全着陆 - Land safely
逐步影子跟读指南
影子跟读是一种有效的学习英语发音的方法,通过模仿讲话者的声音和语调来提高你的口语能力。以下是针对这个视频的逐步影子跟读指南,帮助你在练习时获得最佳效果:
- 观看视频并理解内容:首先,观看整个视频,理解讲者所传达的概念和信息。这能帮助你在跟读时更好地掌握内容背景。
- 暂停并重复:在视频的每个重要句子后暂停,模仿讲者的发音和语调。这有助于提高你的英语发音。
- 慢慢加速:一开始可以放慢速度跟读,等你熟悉内容后,试着逐渐加快语速,以接近讲者的速度。
- 重点练习关键词:关注视频中出现的关键短语,比如“终极速度”和“安全着陆”,在你的练习中反复使用这些词汇。
- 利用影子跟读网站:可以使用一些专门的影子跟读网站进行练习,记录自己的发音并与原音进行对比,帮助自己不断改进。
通过以上步骤,你可以有效地练习并提高你的英语口语能力,成为更自信的说话者。记得利用“shadowspeaks”或“英语影子跟读”的方法,加油吧!
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。
































