自然界的动物为了适应环境都有各自独特的生活习性。你知道吗?动物们各种各样有趣的生活习性里有许多鲜为人知的物理知识。白熊在冰面上奔跑的速度惊人。尽管冰很滑,白熊却不会摔跤。这是因为它肥大的脚掌上有一层厚厚的毛,踩在冰面上就有很大的摩擦力阻碍白熊滑倒,白熊就能在冰上奔跑自如。响尾蛇的尾部为什么能发声?原来它的尾部有一个由角质膜围成的空腔,空腔内又用角质膜隔成两个环状空泡,也就是两个空振器。当它剧烈摇动自己的尾巴时,在空泡内形成一股股气流,随着气流一进一出地来回振动,空泡就发出 Natural animals have their own unique habits in order to adapt to the environment. Did you know that animals have a lot of little-known physics knowledge in all kinds of interesting living habits. The white bear runs at an alarming speed on the ice. Although the ice is slippery, the white bear does not wrestle. This is because it has a thick layer of thick hair on its toes, and there is a lot of friction on the surface of the ice that prevents the white bear from slipping and the white bear can run freely on the ice. Why does the rattlesnake’s tail vocalize? The tail has a cavity surrounded by a horny membrane. The keratin membrane divides the cavity into two annular vacuoles, which are two oscillators. When it violently shakes its own tail, a stream of air is formed in the vacuole, and as the air flow vibrates back and forth, the vacuole emits