In Singapore it rains a lot! But have you ever wondered how all that water gets up into the sky — and then falls back down on your umbrella?
Let's follow one tiny drop of water on its big adventure. Tap Next to begin!
The hot sun heats puddles, drains, rivers and the sea. The warm water slowly turns into an invisible gas called water vapour and floats up. This is called evaporation.
Tap the sun to send its warm rays down and watch the water rise!
The water vapour rises higher and higher. The higher you go, the colder the air becomes — even on a hot Singapore day!
Tap each thermometer to discover the temperature at that height.
When vapour gets cold, it turns back into tiny water droplets around specks of dust. Millions of droplets together make a cloud! This is called condensation.
Tap the cloud again and again to add more cold droplets and grow it!
The droplets bump and join into bigger drops. When a drop is too heavy for the air to hold, gravity pulls it down — and that's rain! This whole journey is the water cycle.
Slide to add more water to the cloud. How heavy must it get before it rains?
You know all four steps now! Tap them in the correct order, starting from the sun warming the sea.
Why does rain fall from a cloud instead of floating forever?
Now you know the whole journey of a raindrop — the water cycle.
And it happens again and again — that's why it's called a cycle! Next time it rains in Singapore, you'll know exactly what's happening. ☔