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感悟中國科技之美作文，關于科技的作文急急急

來源：整理時間：2023-06-01 12:44:44 編輯：智能門戶手機版

1，關于科技的作文急急急

葉為什么變紅. 大家都知道.秋天的楓葉會變紅，如燃燒的火焰，十分漂亮。可你們都知道，秋天的楓葉為什么會變紅呢？我百思不解，于是我查閱了書籍，并在網(wǎng)上進行了搜索，我知道了。原來，落葉樹種在秋冬的時候，體內會產生一些化學變化，讓原來樹葉中所含的有用的物質或部分組織分解之后，回收儲藏在莖或根的部位。他里面有一種叫花青素的特殊色素，它是一種“變色龍”，其中在酸性液中呈紅色。隨著季節(jié)更替，氣溫，日照相應增減，葉片中的主要色素成分也發(fā)生了變化，秋天到了，氣溫降低，光照減弱，對花青素成分也發(fā)生變化，而楓葉等紅葉樹的葉片細胞液呈酸性，所以，整個葉片便呈紅顏色。我又照著書上做了一次試驗：我從樹下?lián)炝藥灼蠹t似火的樹葉.回到家,我把紅葉剁碎了.接著把它放在水里煮起來,水變紅了.然后又往水里加了些稀鹽酸,那水就更紅了.最后,我又沏了一小杯肥皂水,倒在水里,紅水奇跡般地變藍了. 這個試驗證明了,紅葉遇酸變紅,遇堿變藍的東西是花青素.秋天,樹葉產生花青素,恰好,樹葉是酸性的,這樹葉就變的火紅了. 生活中,還有許多值得我們觀察的事，只要我們用心發(fā)現(xiàn)，就會有所收獲。

關于科技的作文急急急

2，關于科技的作文600字要快

科技無處不在，科技使我們感到無比自豪，我們的衣食住行一刻也離不開科技的貢獻。 20世紀的發(fā)明與創(chuàng)造給人類帶來了無窮的變化。拉鏈：天衣無縫；洗衣機：解放勞動力；維生素：讓生命之樹長青；電飯煲：生米煮成熟飯；空調：這里四季如春；磁縣浮列車：會“飛”的列車；霓虹燈：不夜的明珠…… ??！現(xiàn)在的科技真發(fā)達呢！就連我們的學校也存在著無窮無盡的科技。在一節(jié)課科學課上，王老師給我們上了一課關于“電和磁”的課文。王老師告訴我們：“在生活中的電能是源于1820年，丹麥科學家奧斯特在一次實驗中，偶然讓通電的導線靠近指南針，發(fā)現(xiàn)了電能產生磁，由于這個發(fā)現(xiàn)，為人類大規(guī)模利用電能打開了大門。”在接下來的時間里，我們又做了一個實驗。我們先準備一個指南針，一個電池，一根導線，然后拉直導線，在導線的兩端分別去掉塑料露出銅芯，接著把導線兩端的銅芯接在電池的正負級上。緊接著我們將導線靠近小指南針，就在這時我們觀察到導線剛接近指南針時，指南針突然轉個不停，斷開電流后，指南針又像剛剛被教訓后的孩子一樣安靜下來。老師告訴我們這是電能產生磁的證據(jù)。那時我們一同見證到了科技的奧秘和有趣。科技支撐著文明，科技創(chuàng)造了未來，而未來在我們的手中，讓我們成為知識的探索者，讓我們在未知的道路上漫游，讓我們用無窮的創(chuàng)造力將我們居住的世界變得更美麗！

關于科技的作文600字要快

3，求一篇有關科技的作文

The development of science and technology makes our life more comfortable and convenient. However, scientists have created many problems, which are not easy to be resolved, such as air pollution, the deterioration of environment and the scarcity of natural resources, to which we must some solutions. Modern science and technology render people many advantages. Modern telecommunication shortens the distance between people and makes communication much easier. Internet is widely used now not only for collection of abundant information but also for correspondence. Email, the most effective communication device now, is becoming very popular. Besides, telephone and mobile phone make contact more convenient than before. Modern transportation, such as airplanes and high-speed trains make our journey smooth and fast. With the help of modern transportation, people can go everywhere they prefer to. The journey to outer space and other planets is not a dream any more. Rockets and space shuttles can help us realize the dream of space travel. Modern medicine prolongs peoples life and relieves patients of sufferings from many diseases. Cancer and AIDS are fatal to peoples health. Thanks to the endeavors scientists have made, these diseases become treatable. However, the process of scientific development also arouses many sever problems to our human beings. Internet, though widely used in modern communication, is easy to be destroyed by computer virus. Outer space exploration has produced much waste in the space. A tiny metal, a screw, for example can destroy a flying man-made satellite. Industrialization is making natural resources become scarce. Confronted with these problems, scientists are seeking prompt and feasible solutions. The development of science and technology bring abou