🎮 Games › 🎬 Lesson videos › Picture Book: Little Drop’s JourneyPicture Book: Little Drop’s Journey
⏱ 0:55 📘 Grade 4 Science · Term 1 · Lessons 10–12
Little Drop lives in the ocean (71% of Earth’s surface), evaporates into vapour, condenses into clouds and rain, freezes at 0 °C and boils at 100 °C. Fresh water is scarce — save water!
The videos are narrated in Mandarin Chinese with on-screen subtitles.
📚 What you will learn
Oceans cover about 71% of Earth’s surface, land about 29%. Water evaporates into vapour; vapour cools and condenses into clouds and rain. Water freezes at 0 °C (and expands) and boils at 100 °C . Water has three states — solid, liquid, gas — that change into each other. Fresh water is scarce.
🎙️ What the video says (in Chinese)
绘本故事《小水滴旅行记》。小水滴：我是小水滴，住在大海里。地球表面大约 71% 都是海洋！ 太阳晒呀晒，小水滴蒸发了，变成看不见的水蒸气，飘上了天空。小水滴：我从液态，变成了气态！ 高空中很冷，水蒸气遇冷，凝结成小水滴，聚成了云。小水滴：我们越聚越多，变成雨落下来啦！ 冬天到了，气温降到 0 ℃，小水滴结成了冰。小水滴：我变成了固态！结冰以后，我的身体还变大了一点点。 人们把水烧开，到了 100 ℃，水沸腾了，冒出好多水蒸气。小水滴：0 ℃ 结冰，100 ℃ 沸腾，记住啦！ 小水滴：地球上能喝的淡水很少很少，请大家节约用水！水有固态、液态、气态三种状态，它们可以相互转化。
✏️ Try it yourself
At what temperature does water freeze? Boil?
Show answer 0 °C; 100 °C
What is ice — solid, liquid or gas?
Show answer Solid
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