八年级下册第3单元优秀作文：科学技术
八年级下册英语第三单元科学作文
八年级下册英语第三单元科学作文全文共6篇示例，供读者参考篇1The Amazing World of ScienceHi everyone! Today, I want to share with you some incredible things I've learned in my science class. Science is really cool because it helps us understand the world around us. In the third unit of our eighth-grade English textbook, we explored some fascinating scientific concepts. Let's dive in and discover the amazing world of science together!The unit started with the topic of "Electricity." We learned that electricity is everywhere, and it powers many of the things we use every day. Can you imagine a world without lights, computers, or even your favorite gadgets? It would be so different! We also discovered how electricity travels through circuits and how important safety is when dealing with it. Remember, never play with electricity without adult supervision!Next, we explored the wonders of "Magnetism." It's like magic, but it's actually science! Magnets have this incredible power to attract certain types of materials, like iron. We had somuch fun experimenting with magnets and learning about their poles. Did you know that opposite poles attract each other, while similar poles repel? It's like magnets have their own secret language!Moving on, we delved into the world of "Sound." We discovered that sound is created by vibrations and travels in waves. We conducted experiments to see how different materials can absorb or reflect sound. We even learned about how our ears work and how important it is to protect our hearing. So, next time you listen to your favorite music, remember to keep the volume at a safe level!After that, we explored the topic of "Light." We learned that light is a form of energy that allows us to see everything around us. We discovered how light travels in straight lines and how it can be reflected or refracted. We even made our own colorful rainbow using a prism! It was like painting with light. Isn't that amazing?Finally, we dived into the fascinating world of "Heat and Temperature." We learned that heat is a form of energy that can make things warmer, while temperature is a measure of how hot or cold something is. We had fun exploring how heat can be transferred through different materials, like conduction,convection, and radiation. We even conducted experiments to see how heat affects the rate at which things can dissolve. It was like being a little scientist in our own laboratory!In conclusion, the third unit of our eighth-grade science class was mind-blowing! We explored electricity, magnetism, sound, light, and heat. Science is all around us, and it helps us understand the world in a whole new way. Remember, always be curious, ask questions, and keep exploring the amazing world of science!I hope you enjoyed my little journey through the world of science. Science is an adventure that never ends, and there's always something new to discover. So, let's keep exploring and learning together!Keep shining bright, my friends!Yours scientifically,[Your Name]Word Count: 447 words篇2The Amazing World of ScienceHi everyone! My name is Emma, and today I want to tell you all about the amazing world of science. Science is so cool because it helps us understand how things work in our world. In my eighth grade class, we are learning about the third unit of our English textbook, which is all about science. Let's dive in and learn together!One of the first things we learned about in this unit is the scientific method. It's a way scientists solve problems and answer questions. It has six steps: asking a question, doing research, making a hypothesis (which is like a guess), conducting an experiment, analyzing the data, and drawing a conclusion. It's like being a detective and trying to solve a mystery!Another fascinating topic we explored is the states of matter. Did you know that everything around us is made up of matter? Matter can be a solid, a liquid, or a gas. For example, when water is really cold, it becomes ice, which is a solid. When it gets warmer, it turns into liquid water. And when it gets even hotter, it becomes water vapor, which is a gas. It's like magic!We also learned about the water cycle. It's how water moves from the ground to the sky and back again. The sun heats up water on the Earth's surface, and it turns into water vapor, risinginto the sky. It forms clouds and eventually falls back to the ground as rain, snow, or hail. It's like a giant water roller coaster!One of the coolest things we studied is the human body. We learned about our different body systems, like the circulatory system, which helps blood flow through our bodies, and the respiratory system, which helps us breathe. We even got to do a fun experiment where we made a model lung using a plastic bottle and balloons. It was so cool to see how our lungs work!In this unit, we also explored the wonders of our solar system. We learned about the planets, the sun, and the moon. Did you know that Earth is the third planet from the sun? It's the only planet we know of that has life on it. We also learned about the phases of the moon and how it changes shape throughout the month. It's like a cosmic ballet!I really enjoyed learning about science in this unit. It made me realize how amazing our world is and how much there is to discover. Science helps us understand the mysteries of the universe and how everything fits together. Who knows, maybe one day I'll become a scientist and make my own discoveries!Well, that's all for now. I hope you enjoyed learning about the third unit of our eighth grade English textbook. Science is socool, and I can't wait to learn even more. Remember, always stay curious and keep exploring the amazing world of science!Take care,Emma篇3The Amazing Solar SystemHi everyone! I'm Tommy, and today I want to tell you all about the incredible solar system. Do you know what the solarsystem is? Well, it's not just a cool science fiction movie. It's actually a huge family of planets, moons, asteroids, and comets that revolve around our very own star, the Sun!Let's start with the star of the show, the Sun. The Sun is a gigantic ball of hot gases, and it's so big that you could fit more than a million Earths inside it! It gives us light and heat, and it's the reason we have daytime and nighttime. Without the Sun, life on Earth wouldn't be possible.Now let's talk about the planets. There are eight planets in our solar system, and they all have their own unique characteristics. First, we have Mercury, the closest planet to the Sun. It's really hot there because it's so close to the Sun. Next isVenus, which is known as Earth's twin because it's almost the same size. However, Venus is super hot with a thick atmosphere that makes it like a giant greenhouse.Then we have our home planet, Earth! Earth is the only planet that we know of that has life. It has beautiful oceans, mountains, and a diverse range of plants and animals. It's truly a special place. Mars, the fourth planet, is often called the "Red Planet" because it has a reddish color. Scientists believe that there might have been water on Mars long ago, which makes it an exciting place to explore.Jupiter is the largest planet in our solar system, and it's known for its famous swirling storms, like the Great Red Spot. It's like a giant ball of gas! Saturn is famous for its beautiful rings made of ice and dust. Can you imagine wearing a ring that big? Uranus and Neptune are the last two planets, and they are known as the ice giants because they are made mostly of ice and gas.Besides the planets, there are also moons, asteroids, and comets in our solar system. Moons are like smaller planets that orbit around the planets. For example, Earth has one moon, but Jupiter has a whopping 79 moons! Asteroids are rocky objects that are smaller than planets, and most of them are found in theasteroid belt between Mars and Jupiter. Comets are icy bodies that travel around the Sun in long, oval-shaped orbits.So, you see, the solar system is truly amazing! It's like a big family with the Sun as the parent and all the planets, moons, asteroids, and comets as the children. Each member of the family has its own unique features and role to play. It's fascinating to learn about all the wonders that exist beyond our Earth.I hope you enjoyed learning about the solar system with me today. Remember, the universe is vast and full of mysteries waiting to be discovered. Keep exploring, keep learning, and who knows, maybe one day you'll become a great astronomer and unlock the secrets of the universe.篇4The Amazing World of PlantsHi everyone! My name is Lily, and today I want to tell you all about the incredible world of plants. Plants are not just green things we see outside; they are living beings that make our planet beautiful and help us in many ways.Plants come in all shapes and sizes. Some are tall and strong, like trees, while others are small and delicate, like flowers. Theycan be found everywhere, from our gardens to the deepest forests. But have you ever wondered how plants grow?First, let's talk about seeds. Seeds are like tiny magical packages that contain everything a plant needs to start growing. When a seed gets the right conditions, such as water, air, and sunlight, it begins to sprout. This process is called germination. Isn't it amazing?As the plant grows, it needs water to stay healthy. Just like we need water to survive, plants need it too. They have special tubes called xylem that help transport water from the roots to other parts of the plant. So next time you water a plant, remember that you are helping it grow big and strong!Another essential ingredient for plant growth is sunlight. Sunlight provides plants with energy through a process called photosynthesis. Leaves have a substance called chlorophyll that captures the energy from the sun and turns it into food for the plant. That's why plants love to bask in the sun!Plants not only give us oxygen to breathe, but they also help keep our planet cool. They absorb carbon dioxide, a gas that can be harmful to the environment, and release oxygen into the air. So, the more plants we have, the better it is for our Earth!Did you know that plants have different parts that serve specific purposes? Let's start with the roots. Roots anchor the plant into the ground and absorb water and nutrients from the soil. They act as the plant's lifeline, providing it with everything it needs.Stems are like the highways of the plant. They transport water, nutrients, and food to different parts of the plant. Some stems are soft and flexible, like the ones on flowers, while others are strong and sturdy, like the trunks of trees.Leaves are the factories of the plant. They use sunlight, carbon dioxide, and water to make food for the plant. Leaves come in various shapes and sizes, and they are usually green because of the chlorophyll they contain.Flowers are the reproductive parts of the plant. They come in many beautiful colors and shapes to attract insects and birds that help with pollination. Pollination is the transfer of pollen from the male part of the flower to the female part, which eventually leads to the formation of seeds.Finally, we have fruits. Fruits are the mature ovaries of the plant and contain seeds. They come in all sorts of delicious flavors and textures. Fruits are not only tasty, but they also help plants spread their seeds to new places.So, you see, plants are truly amazing! They provide us with food, oxygen, and a beautiful environment. They teach us about the wonders of nature and the importance of taking care of our planet. Next time you see a plant, take a moment to appreciate its beauty and remember how much it does for us.I hope you enjoyed learning about plants as much as I did. Let's all be little gardeners and take care of our green friends. Together, we can make the world a better place!Remember, plants are not just living things; they are our companions on this incredible journey called life.篇5The Amazing World of ScienceHi everyone! I'm so excited to tell you about the awesome things we learned in our eighth-grade science class. This term, we studied the incredible world of science, and it wasmind-blowing! Let me share with you some of the amazing things we discovered.First, we learned about the fascinating field of genetics. Do you know that our traits, like eye color and height, are determined by our genes? Genes are like tiny instructions insideour bodies that tell us how we will look and function. It's like having a secret code that makes each of us unique! We even did a fun experiment where we observed how traits are passed down from parents to their children. It was like being a detective and solving a mystery!Next, we dived into the world of chemistry. We learned that everything around us is made up of tiny particles called atoms. These atoms join together to form different substances. We even got to do some cool experiments in the lab, mixing different chemicals and observing the amazing reactions that occurred. It was like being a mad scientist! But don't worry, we were always safe and wore protective goggles.One of the most mind-boggling topics we covered was astronomy. We studied the vastness of our universe and learned about the planets, stars, and galaxies. Did you know that the sun is just one of billions of stars in the Milky Way? And there are countless other galaxies out there! We even had a stargazing night where we used telescopes to observe the moon and some constellations. It was like having a front-row seat to the wonders of the universe!Another interesting topic we explored was ecology. We learned about the delicate balance of nature and how all livingthings are connected. We discussed the importance of taking care of our environment and how our actions can impact the world around us. We even did a project where we createdmini-ecosystems in jars, complete with plants, soil, and little creatures. It was like having a tiny world in our hands!Last but not least, we delved into the world of physics. We learned about motion, forces, and energy. It was amazing to discover the laws that govern how things move and interact with each other. We did some fun experiments with magnets, electricity, and even built simple machines. It was like being a superhero with the power to understand and control the forces of nature!In conclusion, our eighth-grade science class was a fantastic journey through the amazing world of science. We explored genetics, chemistry, astronomy, ecology, and physics. It was like unlocking the secrets of the universe and understanding how everything around us works. I can't wait to continue my scientific adventures in the future and learn even more about this incredible subject!Remember, science is all around us, waiting to be discovered. So keep exploring, asking questions, and never stop beingcurious. Who knows, maybe one day you'll make a groundbreaking scientific discovery of your own!篇6The Wonders of ScienceScience is just about the coolest thing ever! I know a lot of kids think it's boring, but trust me, once you get into it, science is amazing. There's so much crazy stuff happening all around us that science helps explain.My favorite part of science is definitely experiments. Who doesn't love mixing chemicals together to see what will happen?I remember in 5th grade we did this really neat experiment where we combined vinegar and baking soda in a bottle. The reaction made the most awesome fizz that filled up the entire bottle with gas! The best part was when our teacher put a balloon over the top and captured all the gas inside, inflating the balloon. So simple, but so cool.Experiments let you be a detective, using the scientific method to make a hypothesis, test it out, and analyze the results. It's like you're a mini scientist trying to unlock the secrets of the universe. Well, maybe not the whole universe, but definitely the secrets of your kitchen pantry! I can't tell you how manyhousehold items I've mixed together just to see what happens. My parents probably think I'm nuts, but that's just me doing science!Another awesome thing about science is that it covers pretty much everything. You've got chemistry with all the different elements and molecules. Physics explains forces, energy, and motion. Biology is the study of living things like plants, animals and humans. Earth science explores rocks, weather, and outer space. Every subject is endlessly fascinating once you start digging into it.Take chemistry for example. The periodic table alone blows my mind. How crazy is it that there are over 100 different elements that make up absolutely everything around us? All the infinite varieties of stuff in the world - from diamonds to lava to plastic toys - are just different combinations of elements. And those elements can be liquid, solid or gas depending on the conditions. The fact that a few simple principles can explain the entire material world is just mindblowing to me.Or how about physics? The laws of physics govern every movement and interaction of matter and energy. That means everything from why objects fall down instead of up, to howplanets orbit the sun, to making smartphones and laserswork properly. Without physics, modern life wouldn't exist. No technology, no machinery, no understanding of how the universe operates. We'd still be living in the dark ages trying to make sense of it all.Biology is crazy interesting too when you start learning about the human body. Did you know the average person has around 37 trillion cells? And every cell is like a miniature world with mitochondria as power sources, a nucleus controlling operations, all surrounded by a membrane? Our bodies areself-contained micro-universes computing and functioning at every moment without us evening thinking about it. Then you've got DNA which stores the codes and blueprints to build every living creature's body. It's like nature's own programming language containing all the instructions to create life itself. Mind = blown.As for earth science, just pondering the immense scale of geological time and the formation of our planet is enough to make my head spin. We're talking billions of years of molten rock slowly cooling, continents shifting, mountain ranges forming and eroding. All that happened in slow motion over incomprehensibly large stretches of time. Meanwhile, the solar system formed from a massive cloud of interstellar dust and gasspinning and coalescing under its own gravity. Galaxies are spread so far apart that their light takes millions of years to reach us. The universe is utterly mind-boggling in its size and age.What's really cool is how all the different fields of science connect together. Chemistry and physics explain how biology works at the molecular level. Geology and astronomy shed light on the conditions that allowed life to develop on Earth in the first place. It all links together into one grand unified view of the cosmos and our place within it.Which is why every kid should get excited to learn about it. Science is quite literally an adventure into understanding the fundamental laws that govern existence itself. How awesome is that?! You get to journey into astronomy to ponder the origin and fate of the entire universe. Or dive into quantum physics to study the bizarre subatomic world of probability waves and uncertainty principles. Or roam through biology to unravel the mysteries of human consciousness and intelligence. Wherever your curiosity leads, science is there to satisfy your craving for knowledge.So don't sit on the sidelines thinking science is just boring facts and formulas. Get in the game and unleash your inner scientific explorer! Whether it's doing silly experiments at homeor going on some virtual field trips thanks to the internet, start feeding your brain with all the amazingly cool science concepts out there.There's an entire universe (or multiverse??) waiting to be discovered. And it's going to take a fresh crop of kids thirsting for that knowledge to push the boundaries of science even further. Who knows? Maybe one day I'll be the one to develop teleportation or upload my consciousness into a supercomputer.A guy can dream, right? For now, I'll just keep blowing stuff up mixing baking soda and vinegar. Ah, the simple pleasures of scientific discovery!。
2021年初二年级下册三单元作文 科技在我身边
初二年级下册三单元作文科技在我身边提起“科技”，也许你最先想到的就是火箭升天，潜艇入水，悬浮列车、神八、天宫一号等尖端技术。
其实，科技离我们并不遥远：当烈日炎炎的夏季到来时，我们能在舒适的空调屋中享受凉爽;当我们饥肠饥肠辘辘时，妈妈用电磁炉、电饭锅、微波炉为我们烧上一桌美味的饭菜;当我们因学习或工作而无暇顾及那一大堆该换洗的衣服时，洗衣机又为我们解决了问题……瞧，科技就在我们身边。
星期五放学回家，坐在电视前，听着流行歌曲，看着中外的新闻轶事，开阔了视野，丰富了知识，愉悦了心情，真是“足不出户，便知天下事”。
走亲访友时，电动车，摩托车乃至日渐普及的小轿车展示了它们无穷的魅力，无需多久，我们便能在微风的吹拂下与亲朋好友相聚。
我们外出旅游时，或坐上火车在崇山峻岭中飞驰，一览大自然的美妙;或乘着飞机在广阔的天际间翱翔，与蓝天白云为伴;甚至坐在磁悬浮列车上，感受风驰电掣的惬意。
科技真的是太神奇了，给人们带来了诸多便利。
电话、手机的出现，让我们告别了飞鸽传书的时代，增强了人们之间的交流。
电脑的推广使用，不但为人们带来致富门路，还解决了人们生活中的很多疑难问题，也为人们消除了对远方亲人的想念之苦。
今年暑假，我家买回了一台电脑，通过视频，奶奶和远在广州打工的爸爸见面了，这下可把奶奶乐坏了，一改往日的萎靡不振，整日都乐呵呵的，再也不絮叨让爸爸回来陪她聊天了。
就连我们农村的学校，课堂上也用起了电脑和多媒体设备，极大地提高了我们的学习兴趣。
……瓦特发明了蒸气机，爱迪生发明了白炽灯，富兰克林发明避雷针，贝尔发明了电话……正是科学技术的发展，引领着人类社会不断向前进。
我们伟大的祖先，在经历了无数的试验后，为我们创造了很多奇迹。
当今的科技，如日中天，在军事、医学、航空及日常生活等领域都取得了巨大的成就。
克隆技术、纳米技术也不再陌生。
我们生活在科技的时代，我们在科技的生活中成长，作为新世纪的创建者，更应该立下宏志，勇攀科技高峰。
人教版八年级下册三单元作文：最新科技成果三则
人教版八年级下册三单元作文：最新科技成果三则
科技发展的越来越快，每一年都有新的科技成果问世，下面介绍三则最新科技成果：
第一则：最近，一款叫做“超级机器人”的机器人出现在市场上，它可以完成一系列复杂的任务，比如识别物体、跟踪目标、移动等，它的出现让我们的生活变得更加便捷。
第二则：最近，一款叫做“超级智能手机”的手机出现在市场上，它可以完成多种功能，比如识别人脸、拍照、搜索信息等，它的出现让我们的生活变得更加便捷。
第三则：最近，一款叫做“超级无人机”的无人机出现在市场上，它可以完成多种任务，比如航拍、监控、送货等，它的出现让我们的生活变得更加便捷。
科技发展给我们的生活带来了许多便捷，它让我们的生活更加美好。
人教版初二下册三单元有关科技的作文
20XX年人教版初二下册三单元有关科技的作文科技实力成为一个国家决胜未来，谋取有利地位的关键因素。
下面小编整理而成的人教版初二下册三单元有关科技的作文，谢谢你的阅读。
人教版初二下册三单元有关科技的作文篇1：科技，让生活更美好现代社会，科技带给我们的便利已经数不胜数。
电视、电脑、网络、手机……这些高科技产品已经成为我们生活和工作的必需品。
我们的生存、生活离不开它们。
以前，人们给远方的亲人或者朋友表达思念，表示问候时用的是古老的信封和笔，往往需要几天、几十天的时间才能将信送给远方的亲人或者朋友。
这样不仅慢，而且容易将信丢失;而现在，我们只需要打开电脑，打开网络，坐在电脑前轻轻敲几下键盘，点几下鼠标，就可以将一封信用几秒钟的时间发给远方的亲人和朋友。
互联网把我们各个地区、各个国家乃至整个地球都连成了一个地球村，把我们每一个人、每一个国家的距离都拉进了许多。
从前网络只是用于电脑，可是，在21世纪的今天，手机也能实现网上冲浪，手机qq……在上世纪90年代，几乎每个人的手里都拿着像砖头一样的手机，俗称“大哥大”。
“大哥大”是手机的“鼻祖”，渐渐地，有了bb机、小灵通……随着手机的演变，手机上的功能也随之强大。
原先的手机，功能仅限于打电话，可是现在，手机的功能已经日益增多。
现在的手机，不仅能打电话，还能接宽带，在手机上享受网上冲浪的乐趣，例如：愤怒的小鸟，黄金矿工等，有一些手机上还有gps导航仪，无论你在哪里，只要打开它，你就会找到你想找到的位置。
不仅这些，现在的3g手机还能够实现视频聊天。
在这样的手机上，如果要给朋友打电话。
启动视频聊天，就可以看到对方，看到对方在做什么……手机已经成为我们生活中不可或缺的一部分，有了手机的同时，我们的衣、食、住、行、用，一切的一切都是科技的功劳。
因为，科技在发展，社会在发展，就能使一个国家变的繁荣。
因为有了科技，我们的生活条件才会不断改善、创新;因为有了科技，我们才能构建一个和谐的、稳定的社会。
八年级下册第三单元有关科学技术的作文
八年级下册第三单元有关科学技术的作文在现代用法中，“科学”经常指的是追求知识，不但对知识本身的一种方式，它也经常受限于研究这些分支寻求解释物质世界的现象。
以下是小编带来的科学作文，希望对你有帮助。
篇一：拿今天和十万年前相比，我们是至高无上的;和几千年前相比，我们是居高临下的。
由从前的马车到现在的飞机;由从前的煤油灯到现在的白炽灯;有以前的海角天涯到现在的近在咫尺。
而。
这一切，都是科技发展带来的翻天覆地的变化我们周围的世界，难道不是科技带来的吗?现在，我们的生活越来越舒适，越来越惬意，越来越美好。
毛泽东主席曾说过：“不搞科学技术，生产力无法提高。
”由此可见，如果科技不发展，那么我们的生活将不会像现在这样美妙。
邓小平同志也曾说过：“科学技术是第一产力。
”是啊!如果现在有一台时光机载我们回到古代，那我们必定会整日以泪洗面。
因为，如果我们真正回到了古代，见识到了古代没有科技的日子，我们一定会感叹当今世界因有了科技而日益发展的美丽世界。
“16亿人口的泱泱大国，为何能在世界面前挺起胸脯?正是因为科技在无止尽的发展!在无止尽的进步! ”当时我看到这几句话的时候，心里感慨万千。
不禁想起了同志在十七大报告中指出：科学发展观是我国经济社会发展的重要指导方针，是发展中国特色必须坚持和贯彻的重大思想。
“如果没有科技的进步，哪会有今天人类物质文明和精神文明的高度发展? ”因为有了科技，人类的生活品质才能提高! 篇二：科技重要吗?回答是：当然重要!现在是一个发达的时代，使这个时代发达，科技有着重要的作用。
日常生活中，人们也用到了科技。
你想了解知识，信息，你就会想大哦什么呢?对，那就是电视，电视已成为了5的家用电器，曾有人做过调查，说10户人家里，只有2户没有电视，这就可以看见人们非常需要电视!你的一个好朋友生命快要结实的时侯，你会将他送大哦哪里去呢?那就是医院，为什么要送呢?对，因为那里有许多先进的科技，可以将一个快要死去的人救活，就这可以看出科技对人类的帮助实在是太巨大了。
[八年级下册]人教版八年级下册第三单元作文-科技幻想
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[八年级下册]人教版八年级下册第三单元作文-科技幻想人教版八年级下册第三单元作文-科技幻想关于科技的作文_第1篇：未来的科技是什么样的呢?也许大家都很好奇。
未来可能有像人一样的机器人?未来的汽车能在天上飞?电脑也会有思维会说话谈感情?现在让我们一起去畅想未来的世界吧!清晨，我正懒洋洋地睡在床上，蒙?中听见一阵音乐把我给弄醒了：“小主人，起床的时间到了。
”家用机器人正拿着我的衣服站在床头边。
我漫不经心地说：“我昨天穿的衣服你给洗了吗?”“放心吧，小主人，早就洗好烘干叠好了。
”机器人说，边说它还边帮我把衣服穿好。
此时我的床慢慢地自动变成了迷你电汽车停到窗外，它悬在空中等候指令。
就连洗漱也不用我自己动手，毛巾停在空中，牙刷也停在空中。
我洗漱完了之后，机器人又拿了一个食谱给我，那是早餐食谱，我随意点了牛排、汉堡、鱼翅、龙虾，吃完了只要说一声好了，机器人就自动把餐桌收拾干净了。
我说：“给我备一艘飞船，我马上要去一下月球。
”“小主人，飞船已经在窗外。
”，我进了飞船，按了一下月球标志，我说了一声：“开”，飞船就自动飞行了，仅用3分钟就到了月球。
又过了20年后，走进我的母校，发现学生的书桌上都没有课本，都是荧幕。
原来老师只要在电脑里语音输入题目，就会显示在学生的荧幕里，一切都是全自动的，像我们这么多学生的学校，只要很少的几个老师就足够了，同学们个个学得都非常棒。
但是，这一切都只是我的畅想，不过我相信只要我们人人努力，这一定会变成现实。
关于科技的作文_第2篇：在这里，汽车排出来的不再是滚滚浓烟，而是新鲜的空气。
街上摆的是两种垃圾桶。
一种是可回收垃圾桶，只要你把垃圾丢进这个垃圾桶，它就会飞快地将回收垃圾送到垃圾处理厂。
因为这个垃圾桶里有自动系统，只要垃圾在里面，它就会把垃圾变成自动的，垃圾就会自己跑去垃圾处理厂。
将不可回收垃圾丢进不可回收垃圾桶，这个垃圾桶就会自动把垃圾融化。
这样，垃圾就不会污染环境了。
在每个人的家里，都有三道门，这样可以防小偷。
八年级下册第三单元作文写科技改变生活
八年级下册第三单元作文写科技改变生活〔科技〕在对社会进步产生巨大推动作用的同时,肯定程度上也导致了人们对它的误读。
下面献上〔学习〕啦整理的〔八年级下册〕第三〔单元作文〕写科技转变〔生活〕，信任肯定会对大家有所关怀。
八年级下册第三单元作文写科技转变生活篇1人类社会的进展无疑是科技进展的历史，而现代〔文明〕社会的进展更是与科学技术的日新月异息息相关。
科学技术的进展为我们的衣食住行，通讯咨讯都带来着便利与快捷!曾经有这样一幅图，此图分为三个小图，而每幅图的背景都是夏日的黄昏。
第一幅图描述的是一位老奶奶，她正躺在床上，疲困的眯着眼，手中还握着一把竹叶扇，一边驱逐着蚊子一边还流着一颗颗硕大的泪珠;第二幅图则是一位年纪稍大的先生，只见他坐在一把木头椅子上，手中捧着一本破旧不堪的书，但和第一幅图最不相同的是，他的解暑工具已不是一把扇子，而是他桌子上的那个金属壳的电风扇，风吹打着他那微湿的头发。
不过，他好像没有蚊子的〔苦恼〕，反而尽情的享受着〔阅读〕的乐趣;至于第三幅图就与前两幅图截然不同，图中的人物是一个小孩，他正在玩积木，没有一丝苦恼，嘴上还露着〔欢乐〕的笑容。
当然，这就是空调带来的便利!从"竹叶扇'到"金属壳电风扇'再到如今家家户户都有"空调'。
这就是科技的功劳!当然，科技带给我们的远远不止这些，还有两样最重要的，那就是通讯和咨询。
在古代，人们通过驿站、飞鸽传书、烽火报警、符号、语言、眼神、触碰等方式进行信息传递。
而到了今日，随着科学水平的飞速进展，通信基本完全利用有线或无线电完成，相继出现了固定XX、无线XX、手提XX、互联XX甚至视频XX等各种通信方式。
让我们不得不说是通信技术拉近了人与人之间的距离，提高了通信的效率，深刻的转变了人类的通信。
有了通讯技术后的生活，更是"芝麻开花---节节高'。
人们有事就打个XX，没事也打个XX就当慰问慰问。
初二下学期语文三单元作文最新科技成果三则
初二下学期语文三单元作文最新科技成果三则初二下学期语文三单元作文：最新科技成果三则发现大脑中有个引路人人的大脑就像一块高级集成电路，那数万亿计的神经纤维怎样才能有序排列，各行其道?最近，中科院上海生命科学研究院的研究所脑科学博士袁小兵等人在大脑中发现一个“引路人，它能指引神经纤维沿着片面的路线“前进，不致走上“岔道。
这个“引路人叫Rho小鸟苷三磷酸酶，“驻扎在神经细胞内，能侦察神经纤维生长的“路况，比如哪条路是“绿灯，哪条路是“红灯，并传递这种路况信息，指导神经纤维的发育方向。
人类的情感、学习、思维等活动都有赖于精密的神经网络的工作。
因此，神经纤维导向机制已成为脑科学的研究热点话题，成年期它不仅有助于揭示神经发育的奥秘，借鉴还能对神经损伤再生的研究提供理论借鉴，为开发和研制有利于神经再生的药物提供新思路。
巨型圆环绕银河近来，天文学家观测到一个由几亿乃至几十亿颗恒星组成的缓慢围绕银河系旋转。
这一新发现为银河系产生于大爆炸的观点提供了新的证据。
暗带目前看到的这个环还不完整，科学家将继续寻找其他部分，并研究其中恒星的浓度、亮度、速度等。
目前圆环的成因还不清楚，有科学家认为，其中的一些恒星有可能诞生于银河系，在坎坷的年代里运行到七十年代了外缘;也有可能圆环是银河系附近一个小星系的残骸，该星系在冥王星引力作用彗核下被吞并。
所研究这个圆环的起源，有助于了解星系的演化过程。
新概念数码手镯我们在动画片里看到圣斗士、太空人等身上都穿戴有特殊的装置，一抬手腕就可点火激光，方能或把手腕凑近嘴边才能通话，非常酷。
现在美国TRIUM公司设计了一款人体工学类似的穿戴式通讯手镯。
铂金手镯上装有通讯及影像传输功能，显示屏设在手背上的那一部分，手腕右边还安装右侧了一个微型摄像头，用户可以在观看影像的同时直接打开麦克风通话。
戴上它你也能像圣斗士帮斗一样威风。
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八年级下册第 3 单元优秀作文：科学技术 中国是一个科技大国。
从科技最落后到科技最顶尖， 经历了突飞猛进的发展。
以下是小编带来的科学作文 ，希望对你有帮助。
篇一： 科学背后到底有多少我们不知道的秘密。
究竟科学是什么?为什么会有科学 这两个字呢?到底有多少人去追求科学呢?他们为什么要去追求科学? 科学并不是能用两三句话就能说清楚的两个字。
科学是一种梦想。
它能让人 陶醉，让人像上瘾一样去揭开它的秘密。
追求科学的人是聪明、理智的。
他们追 求科学也许这是他们的爱好吧! 正如被我们所成为科学之母的居里夫人、 科学巨星——牛顿、 大 科学家爱因斯坦以及近代科学之父——伽俐略等等， 这些都是为了科 学而出了名的。
他们不仅满足了自己，也为自己的国家争了光，为世界添了彩。
论科学，外国人可能认为我们国家还不够资格，但我们确实是非常落后的。
可是有今天， 又是谁为了我们脸上抹了彩。
他就是我们中国首次载人航天飞行航 天员的杨利伟。
他的精神在我们的心中牢牢地锁住了，永远永远。
当记者问他： “从昨天到今天，从默默无闻到轰轰烈烈，21 小时之间，你的人生发生了 重要变化，你有什么感受?”他就答：“我觉得不论是谁执行这次任 务都代表了中国首批载人航天飞行，有很多人在幕后默默奉献，成绩是大家的。
”你听听看，光是这一点就能让外国人刮目相看。
这只是杨利伟为祖国作出的贡献， 而不是我的。
但是我又能为祖国做什么呢? 也许我将来会成这千千万万的爱国的人的其中一个， 也许不是。
能为国家做的事 有很多。
但我现在必须完成的最简单而又重要的一件事，那就是学习。
我们现在 学的虽然是别人的成就， 但是我们总是会从别人的成果中得到另一种启示。
所以 我会让自己成为一个具有杨利伟精神的人! 篇二： 中国是一个科技大国。
从科技最落后到科技最顶尖， 经历了突飞猛进的发展。
今天，我们学校组织去大连科技馆。
首先映入眼帘的是一对大锅，这两个大锅可以进行声音聚焦，使声音变大， 起到扩音作用。
进入展厅， 可以看到许多科技制作， 最令人惊叹的是手摇发电机， 它上面绕了许多导线， 老师介绍说这是利用震动来发电的， 所有电都是这个原理。
听到这，我不禁想马上自己做一个这样的机器 接着我们去了机器人室， 老师教了我们怎么操控机器人， 我只见过电视上的
1/5
机器人，今天居然可以操控它。
虽然是小型的，但依旧不减我们的兴趣。
我叫它 上前就上前，叫它向后就向后，真的很听话，这让我感到无比自豪。
我们还亲手制作了空模、船模和车模。
我做的飞机飞得又高又远，小船漂得 又稳又快。
小车也很好，在实验比赛中勇夺第一!这让我深深体会 到了用辛苦换来的成果是多么快乐，猛然间觉得这是自己发明的。
在天文实验室， 我头一回用天文望远镜观察太阳， 而且我还发现了太阳黑子。
我们还仔细观看了十二星座的模样， 我终于知道了我的水瓶座是什么样子了。
这 令我这个天文爱好者喜出望外，觉得自己就是个天文学家。
最令我感兴趣的是无线电， 老师为我们讲解了无线电的概念， 无线电是个大 家族，能传送信息的就是电磁波，电磁波是一种特殊的无线电。
听了这些我手都 痒了，巴不得赶快自己亲自动手做一个。
终于，老师讲完了无线电的概念和无线 电设备拼盘的使用方法，我就立马开始动工。
我做了一个收音机，做了感应灯， 测谎仪等无线电设备，实现了我亲手制作科技设备的梦想。
这次去科技馆，我收获很大。
既了解了许多科学知识，又提高了动手能力， 使我深深的体会到了人类在发展，科技在进步!让我更加赞叹祖国科技的突飞猛 进。
我长大也要当一名科学家， 发明许多实用的东西， 为祖国科技发展再添辉煌! 想到这，我仿佛看到了一名牛顿一样的科学家，即将诞生!
2/5
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