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There are four forces acting on an aircraft: lift, weight (or gravity), drag, and thrust. Lift helps keep the aircraft in the air, while weight is the force that pulls all objects toward the center of the Earth. To fly, the lift must be stronger than the force of gravity. Aircraft use similar wing shape with bird tot amplify the lift force.

To understand how this works, it's essential to know Bernoulli’s principle. This principle is a increase in the speed of a fluid (air or liquid) occurs simultaneously with a decrease in pressure or potential energy. In simple terms, faster-moving fluids exert less pressure than slower-moving ones.

The shape of an airplane wing is called an airfoil. As the airplane flies, air flows both above and below the wing at different speeds. Typically, the upper surface of the wing is curved, causing the air above to move longer distance so it moves faster and spread out, which decreases the pressure above the wing. In contrast, the air flowing below the wing moves in a straighter path, so its speed and pressure remain relatively unchanged between high pressure and lower pressure.

Because air moves from areas of high pressure to low pressure, the higher-pressure air below the wing pushes upward toward the lower-pressure air above the wing. The wing, caught in the middle, is "lifted" by this force acting perpendicular to its surface

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영어 과학적 발명품 ppt

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영어 과학적 발명품 ppt

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서론

There are many inventions in the world.Among them, some were created by learning from the wisdom of nature, such as animals and plants.Today, our group would like to introduce you two such inventions: the velcro inspired by the burdock burr and the suction cups inspired by the octopus

세상에는 많은 발명품들이 있습니다.그중에서는 동물이나 식물 등 자연에서부터 얻은 지혜로 만들어진 발명품들이 있습니다.그중에서 저희 조는 여러분들께 도꼬마리 벨크로와 문어 흡착판에 대해서 알려드리겠습니다.

정의(1)

Velcro is a fastening system made of two parts. One with tiny hooks and the other with small loops. When pressed together,they stick and can be pulled apart easily.

벨크로는 두 부분으로 구성된 고정 시스템입니다: 하나는 작은 고리가 있는 것이고, 다른 하나는 작은 고리가 있는 것입니다. 함께 누르면달라붙어서 쉽게 떼어낼 수 있습니다.

원리(1)

The burdock has hook like spines that stick easily to fur or fabric. This is natural mechanism inspired the invention of velcro. Velcro has two sides. One tiny hooks and the other with loops. When pressed together, they attach firmly and can be separated easily

우엉(우엉 식물의 버와 같이)은 털이나 천에 쉽게 달라붙는 갈고리 모양의 가시를 가지고 있습니다. 이러한 자연스러운 메커니즘은 벨크로의 발명에 영감을 주었습니다. 벨크로는 두 가지 면이 있습니다: 하나는 작은 갈고리가 있는 것이고 다른 하나는 고리가 있는 것입니다. 서로 누르면 단단히 부착되어 쉽게 분리할 수 있습니다.

정의(2)

An octopus suction cup is a round, sticky part on its arm that helps it grab and hold onto stuffs like towels, soup holder or smartphone holder.

문어의 흡착판은 팔에 있는 둥글고 끈적한 부분으로, 수건이나 비누 홀더, 스마트폰 거치대 등에 달라붙어 붙잡는 데 도움을 줍니다.

원리(2)

The suction cup works by creating a vacuum. When someone presses the cup against a surface and pulls back a little, the air or water inside gets pushed out. This makes a low-pressure area, the cup sticks strongly to the surface.

흡착판은 진공을 만들어 작동합니다. 누군가 흡착판을 표면에 눌렀다가 약간 당기면, 안에 있는 공기나 물이 빠져나갑니다. 그러면 안쪽 압력이 낮아져서 흡착판이 표면에 강하게 달라붙게 됩니다.

마무리

Velcro and octopus suction cups are cool invention that came from nature. People got ideas by looking at how plants and animals stick things. These inventions are also good for the Earth because we can use them many times without throwing them away. Best of all, they are safe and easy to use, so anyone can use them without any trouble.

벨크로와 문어 흡착판은 자연을 보고 만든 멋진 발명품입니다. 사람들은 식물이나 동물이 어떻게 달라붙는지를 보고 아이디어를 얻었습니다. 이 발명품들은 여러 번 다시 쓸 수 있어서 지구에게도 좋습니다. 게다가 안전하고 사용하기 쉬워서 누구나 모두 걱정 없이 사용할 수 있습니다.

1701 강미건 1707 박사민 1713 양주혁 1720 정성윤 1721 정예서

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There are four forces acting on an aircraft: lift, weight (or gravity), drag, and thrust. Lift helps keep the aircraft in the air, while weight is the force that pulls all objects toward the center of the Earth.

To fly, the lift must be greater than the force of gravity. Aircraft achieve this by using a specific wing shape that amplifies the lift force.

To understand how this works, it's essential to know Bernoulli’s principle. This principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or potential energy. In simple terms, faster-moving fluids exert less pressure than slower-moving ones.

Let’s illustrate this with an experiment using a pipe and vertical glass tubes. When water flows through the pipe, and glass tubes are attached at different points to measure pressure, the height of the water column in each tube indicates the pressure at that point. In areas where the water flows slowly, the water level in the tubes is high, showing higher pressure. In narrower, faster-flowing sections, the water level drops, indicating lower pressure. This demonstrates that faster fluid flow results in lower pressure.

The shape of an airplane wing is called an airfoil. As the airplane flies, air flows both above and below the wing at different speeds. Typically, the upper surface of the wing is curved, causing the air above to move faster and spread out, which decreases the pressure above the wing. In contrast, the air flowing below the wing moves in a straighter path, so its speed and pressure remain relatively unchanged.

Because air moves from areas of high pressure to low pressure, the higher-pressure air below the wing pushes upward toward the lower-pressure air above the wing. The wing, caught in the middle, is "lifted" by this force acting perpendicular to its surface.

When the force of lift exceeds the force of gravity, the airplane can fly. And thanks to thrust, the airplane is able to move forward in flight.

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1. purpose: to reach higher-level cognitive functions of brain.

2. process: first, give dogs various stimulus and serve them food. second, repeat this.

3. outcome: when Povlov gave food to dogs, they salivated.

4. influence: impacted various fields(psychology, education, marketing)

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Inventions inspired by nature

Velcro is a fastening system made of two parts. One with tiny hooks and the other with small loops. When pressed together,they stick and can be pulled apart easily. The burdock has hook like spines that stick easily to fur or fabric. This is natural mechanism inspired the invention of velcro. Velcro has two sides. One tiny hooks and the other with loops. When pressed together, they attach firmly and can be separated easily

An octopus suction cup is a round, sticky part on its arm that helps it grab and hold onto things like rocks, prey or surfaces.

The suction cup works by creating a vacuum. When someone presses the cup against a surface and pulls back a little, the air or water inside gets pushed out. This makes a low-pressure area, the cup sticks strongly to the surface.

Velcro and octopus suction cups are cool invention that came from nature. People got ideas by looking at how plants and animals stick things. These inventions are also good for the Earth because we can use them many times without throwing them away. Best of all, they are safe and easy to use, so anyone can use them without any trouble.

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배경: Before the invention of the microscope, what the eye could see was limited.

After invention, new things that were not seen before are discovered and innovative developments occur.

Also, various disciplines emerged together.

현미경 발명 전: As time went on, the technology for making lenses improved. To see things that were too small to be seen with the naked eye, a microscope was invented in the Netherlands around 1590. Scientists used this microscope to discover tiny cells and microorganisms.

현미경 역할: Microscopes have several important roles. First, they allow us to observe cells. Through cell observation, we can closely examine the structures of animal, plant, and bacterial cells. Next, microscopes are used in microbiological research. They are used to identify and study microorganisms such as bacteria, viruses, and fungi. Besides these roles, microscopes are also widely used in material analysis, scientific education and research, and forensic science.

현미경의 역할2: The microscope has enabled precise observation of cells and microorganisms.

This made it possible to identify the causes of diseases and develop effective diagnosis and treatment.

It has also made significant contributions to the advancement of life sciences and cutting-edge technologies.

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1702 김나경: 자료 조사 및 발표 대본 제작

1706 김주안: ppt 제작 및 발표 자료 조사

1712 안주현: 자료 조사 및 발표 대본 제작

1715 우지성: 역할 분배 및 발표 자료 조사

1716 유예림: 발표 자료 선정 및 발표 대본

1717 이가림: 자료 조사 및 ppt 제작

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1709 박시연 : 발표 자료 선정

1710 성우진 : 에세이

1718 이지윤 : ppt 담당

1711 송민근 : ppt 담당

1727 최현우 : 자료수집

1728 황수빈 : 팀장

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도꼬마리에서 나온 벨크로

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도꼬마리에서 나온 벨크로

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1701강미건:자료수집

1707박사민:발표자료 선정하기

1713양주혁:ppt제작

1714:자료조사

1720:발표자료 선정하기

1721정예서:자료수집

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공기역학의 법칙 (비행기의원리) 사진

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공기역학의 법칙 (비행기의원리) 사진

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파블로프의 개 실험 사진

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파블로프의 개 실험 사진

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프로젝트 발표 후 제출물

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프로젝트 발표 후 제출물

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1. 발표글 - 영어글과 한글번역본

2. 발표글을 선정하게 된 이유와 과정 : 프로젝트를 하면서 논의된 이야기들을 써도 됩니다.

3. 개인

(1) 자신이 한 일 (역할)

(2) 프로젝트 과정을 통하여 배운 점과 감정

-영어 학습, 깨달은 점, 감정 등

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** 글의 내용은 다음을 포함하여야 한다.
(1) 발명품에 대한 간단한 정의나 소개 / 실험의 목적은?
(2) 발명품의 특징 묘사 / 실험의 과정
(3) 발명품의 현대적 의미 / 실험의 예상 결과
(4) 마무리(Last note)

1.  다음 중 하나의 소재를 선택하시오.
(1) Historical Remarkable Inventions
(2) Inventions Inspired by Nature
(3) Interesting Experiment Introduction

2. 역할을 분담하시오.
(1) 팀장 안내 : 소재를 검색하고 의견 나누기 - 의견 종합
(2) 글쓰기, 발표 자료 작성자 선정하기
(3) 전체 발표 준비

3. 발표
PPT 자료를 활용하여 전체가 나와서 발표함.

4. 유의사항
(1) 소수에게 발표 준비가 몰리지 않게 한다.
(2) 모두가 발표에 참여한다.
(3) 친구들이 청중임을 감안하여 흥미롭게 적절한 어휘와 내용으로 발표한다.

5. 발표 후 과제
(1) 발표하는 과정에서 느낀 점을 기록 - 내용, 영어학습, 모둠활동에서 배운 점.
(2) 자신이 발표 과정에서 기여한 바(한 일)를 기록

6. 각 팀의 팀장(PPT,  글쓰기)은 자료를 패들렛에 올리시오.
https://padlet.com/tcfgrace900/1-7-ban0m6d60xdm18vf

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Swimsuits Inspired by Nature

Some animals in nature are great swimmers. Sharks, for example, move fast because of their special skin. Scientists studied shark skin and found tiny patterns that help water flow better. This idea inspired a new swimsuit called Fastskin, made in 2000.

Fastskin swimsuits copy shark skin to reduce drag in water. When swimmers wore them, they swam faster and broke world records. This is an example of biomimicry, which means copying nature to solve problems.

However, Fastskin suits worked too well. They gave swimmers an unfair advantage, so they were later banned in official races. Still, the idea shows how much we can learn from nature.

Today, scientists and designers continue to use biomimicry in many fields, like sports, medicine, and engineering. Nature is full of smart designs, and we can use them to improve our lives.

In conclusion, swimsuits are not just clothes. They can be tools that use nature’s ideas to help us move faster. Maybe someday, you can invent something new by learning from nature, too.

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The Pavlov's Dog Experiment was a groundbreaking study designed to research higher-level cognitive functions of the brain. Through this experiment, Ivan Pavlov made a pivotal discovery: the conditioned reflex.

Pavlov conducted his experiment by presenting dogs with various stimuli, including light, electric shock, and food. He repeated these presentations multiple times. After this repeated conditioning, if Pavlov then presented just a stimulus like the light or electric shock to the dog, the dog would indeed salivate. This occurred because the dog's senses had learned to anticipate food in response to those specific stimuli.

This phenomenon beautifully illustrates the subconscious processes in animals and, by extension, can also offer insights into the human subconscious. Pavlov's work profoundly impacted various fields, including psychology, education, and marketing.

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The Pavlov's Dog Experiment was a groundbreaking study designed to research higher-level cognitive functions of the brain. Through this experiment, Ivan Pavlov made an important discovery: the conditioned reflex.

Pavlov conducted his experiment by presenting dogs with various stimuli, including light, electric shock, and food. He repeated these presentations multiple times. After this repeated conditioning, if Pavlov then presented just a stimulus like the light or electric shock to the dog, the dog would indeed salivate. This occurred because the dog's senses had learned to anticipate food in response to those specific stimuli.

This phenomenon well illustrates the subconscious processes in animals and, by extension, can also offer insights into the human subconscious. Pavlov's work profoundly impacted various fields, including psychology, education, and marketing.