感悟中国科技之美作文，关于科技的作文急急急

1，关于科技的作文急急急

叶为什么变红. 大家都知道.秋天的枫叶会变红，如燃烧的火焰，十分漂亮。可你们都知道，秋天的枫叶为什么会变红呢？我百思不解，于是我查阅了书籍，并在网上进行了搜索，我知道了。原来，落叶树种在秋冬的时候，体内会产生一些化学变化，让原来树叶中所含的有用的物质或部分组织分解之后，回收储藏在茎或根的部位。他里面有一种叫花青素的特殊色素，它是一种“变色龙”，其中在酸性液中呈红色。随着季节更替，气温，日照相应增减，叶片中的主要色素成分也发生了变化，秋天到了，气温降低，光照减弱，对花青素成分也发生变化，而枫叶等红叶树的叶片细胞液呈酸性，所以，整个叶片便呈红颜色。我又照着书上做了一次试验：我从树下捡了几片殷红似火的树叶.回到家,我把红叶剁碎了.接着把它放在水里煮起来,水变红了.然后又往水里加了些稀盐酸,那水就更红了.最后,我又沏了一小杯肥皂水,倒在水里,红水奇迹般地变蓝了. 这个试验证明了,红叶遇酸变红,遇碱变蓝的东西是花青素.秋天,树叶产生花青素,恰好,树叶是酸性的,这树叶就变的火红了. 生活中,还有许多值得我们观察的事，只要我们用心发现，就会有所收获。

关于科技的作文急急急

2，关于科技的作文600字要快

科技无处不在，科技使我们感到无比自豪，我们的衣食住行一刻也离不开科技的贡献。 20世纪的发明与创造给人类带来了无穷的变化。拉链：天衣无缝；洗衣机：解放劳动力；维生素：让生命之树长青；电饭煲：生米煮成熟饭；空调：这里四季如春；磁县浮列车：会“飞”的列车；霓虹灯：不夜的明珠…… 啊！现在的科技真发达呢！就连我们的学校也存在着无穷无尽的科技。在一节课科学课上，王老师给我们上了一课关于“电和磁”的课文。王老师告诉我们：“在生活中的电能是源于1820年，丹麦科学家奥斯特在一次实验中，偶然让通电的导线靠近指南针，发现了电能产生磁，由于这个发现，为人类大规模利用电能打开了大门。”在接下来的时间里，我们又做了一个实验。我们先准备一个指南针，一个电池，一根导线，然后拉直导线，在导线的两端分别去掉塑料露出铜芯，接着把导线两端的铜芯接在电池的正负级上。紧接着我们将导线靠近小指南针，就在这时我们观察到导线刚接近指南针时，指南针突然转个不停，断开电流后，指南针又像刚刚被教训后的孩子一样安静下来。老师告诉我们这是电能产生磁的证据。那时我们一同见证到了科技的奥秘和有趣。科技支撑着文明，科技创造了未来，而未来在我们的手中，让我们成为知识的探索者，让我们在未知的道路上漫游，让我们用无穷的创造力将我们居住的世界变得更美丽！

关于科技的作文600字要快

3，求一篇有关科技的作文

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

求一篇有关科技的作文