十万个为什么 · 科学启蒙 · 计划 05

1 Why Do Leaves Change Color in Fall? 秋天树叶为什么会变色？ 2 How Do Magnets Stick to Fridges? 磁铁为什么能吸在冰箱上？ 3 Why Is the Sky Blue? 天空为什么是蓝色的？ 4 How Do Bees Make Honey? 蜜蜂是怎么酿蜜的？ 5 Why Do We Yawn? 人为什么会打哈欠？ 6 How Do Rainbows Form? 彩虹是怎么形成的？ 7 Why Do Some Animals Hibernate? 有些动物为什么要冬眠？ 8 How Does Soap Clean Your Hands? 肥皂是怎么把手洗干净的？ 9 Why Do Stars Twinkle? 星星为什么会闪烁？ 10 How Do Seeds Grow into Plants? 种子是怎么长成植物的？ 11 Why Do We Sweat When We Run? 跑步时人为什么会出汗？ 12 How Do Cameras Take Pictures? 照相机是怎么拍照的？ 13 Why Do Some Clouds Produce Rain While Others Do Not? 为什么有些云会下雨，有些却不会？ 14 How Do Fireflies Make Their Own Light? 萤火虫是怎么自己发光的？ 15 Why Do Mountains Get Snow but Nearby Valleys Stay Warm? 为什么山上会下雪，附近的山谷却很暖和？ 16 How Do Tides Change Every Day? 潮汐为什么会每天变化？ 17 Why Does Ice Float on Water? 为什么冰能浮在水面上？ 18 How Do Bats Find Their Way in Total Darkness? 蝙蝠怎么能在完全黑暗中找到路？ 19 Why Do Some Rocks Glow Under Ultraviolet Light? 为什么有些岩石在紫外线下会发光？ 20 How Do Ants Build Bridges with Their Own Bodies? 蚂蚁如何用身体搭建桥梁？ 21 Why Do Bubbles Always Form Spheres in Air? 为什么泡泡在空气中总是形成球形？ 22 How Do Coral Reefs Grow So Slowly Yet So Big? 珊瑚礁生长如此缓慢，为何却能变得如此巨大？ 23 Why Do Some Trees Lose Leaves Only in Winter? 为什么有些树只在冬天落叶？ 24 How Do Volcanoes Make New Land Above Sea Level? 火山如何在海平面以上制造新陆地？ 25 Why Do Some Plants Bloom Only at Night? 为什么有些植物只在夜晚开花？ 26 How Do Geysers Shoot Hot Water into the Air? 间歇泉如何把热水喷向空中？ 27 Why Do Deserts Get Very Cold at Night? 为什么沙漠夜晚会变得非常冷？ 28 How Do Lizards Regrow Their Tails? 蜥蜴如何再生尾巴？ 29 Why Do Lakes Freeze from the Top Down? 为什么湖泊从顶部开始结冰？ 30 How Do Bees Know Which Flowers Have Nectar? 蜜蜂如何知道哪些花有花蜜？