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我们的生活中时常会有一些让我们“习以为常”的自然现象。其实,带着问号去探究,我们会发现,这些“习以为常”可并不寻常呢!我们一起来看看发生在生活中的这些科学小常识吧!1.冰糕为什么会冒烟?冰糕冒烟是因为外界空气中有不少眼睛看不见的水汽,碰到很冷的冰糕时,就液化成雾滴包围在冰糕周围,看上去就像是冰糕在“冒烟”一样。2.向日葵为什么总是向着太阳?向日葵的茎部含有一种奇妙的植物生长素。这种生长素非常怕光,一遇光线照射,它就会到背光的一面去。同时它还刺激背光一面的细胞迅速繁殖,背光的一面就比向光的一面生长得快。如此一来,向日葵就产生了向光性弯曲。
There are often some natural phenomena in our lives that make us “unconventional.” In fact, with a question mark to explore, we will find that these “common sense ” may be unusual! Let us take a look at these scientific tips in life! 1. Smoke is because there is a lot of water vapor in the outside world can not be seen in the eyes, when it is cold ice cream, it liquefies into droplets around the sorbet, looks like a sorbet in “smoke ” the same. Why sunflowers always toward the sun? Sunflower stem contains a wonderful plant auxin. This growth hormone is very afraid of light, a case of light exposure, it will go to the backlight side. At the same time it also stimulates the rapid proliferation of cells on the back of the backlight, the backlight side grows faster than the side of the light. As a result, the sunflower produced a bend to the light.