The Water Cycle
The water cycle is the continuous journey water takes as it moves between the Earth's surface and the sky, changing between liquid, gas and sometimes solid along the way. The same water has been recycled for millions of years — the rain falling on Singapore today may once have flowed in an ancient river or floated as vapour over a distant sea.
The cycle has four main stages. In evaporation, heat from the sun turns water in seas, rivers and puddles into an invisible gas called water vapour, which rises into the air. In condensation, the rising vapour meets colder air high up, cools, and forms tiny droplets that gather into clouds. In precipitation, the droplets join together until the cloud grows heavy and they fall as rain, snow or hail. In collection, the fallen water gathers in rivers, lakes, reservoirs and the sea, ready for the sun to warm it once more.
Understanding the water cycle helps learners see how clouds, rain and rivers are linked, why water is never truly lost, and how nature keeps fresh water moving around the planet.
▶ Play the lesson — free, no signup
Want to create your own Spark? Sign up free — type any skill and LearnBuddy builds you a playable lesson.
Sign up free to create your own SparkWhat this Spark covers
-
Welcome💧☁️🌧️ The Amazing Water Cycle The same water on Earth keeps going round and round — for millions of years! The water you drink today might once have been a raindrop in a cloud, a river in the jungle, or even a puddle a dinosaur splashed in! 🦕 Water never disappears — it just changes its shape and travels in a big circle called the water cycle. Let's follow a single water droplet on its journey. Tap Next to begin!
-
Evaporation☀️ Step 1: Evaporation The sun warms up the sea, rivers and puddles. The water gets so warm it turns into an invisible gas called water vapour and floats up into the sky. 💨 💨 💨 ☀️ Tap the sun to heat the water Try tapping the sun a few times and watch the water float up as vapour!
-
Condensation☁️ Step 2: Condensation High in the sky the air is cold. The water vapour cools down and turns back into tiny water droplets. Millions of these droplets crowd together to make a cloud. 0 droplets Add cold droplets together until the cloud is full! ❄️ Add a droplet
-
Precipitation🌧️ Step 3: Precipitation When a cloud holds too many droplets, it becomes heavy. The droplets join up and fall down as rain (or snow and hail in cold places). In Singapore we get lots of rain! ⛈️ 💧 💧 💧 💧 💧 ⛈️ Tap the cloud to make it rain
-
Collection🏞️ Step 4: Collection The rain lands and the water collects together again. It flows into rivers, lakes, reservoirs and the sea — ready for the sun to warm it up and start the whole journey again! Tap each place below to find out where the water goes. 🏞️ Rivers Rainwater runs downhill and joins streams and rivers. 🚰 Reservoir Singapore stores rain in reservoirs like MacRitchie — clean drinking water! 🌊 The Sea Lots of water flows back to the sea, where evaporation begins again. 🌱 Underground Some water soaks into the soil and feeds plants and wells. Tap a card to explore!
-
Build the cycle🧩 Build the Water Cycle Now put the four steps in the right order. Drag each step into the correct numbered box. 1Drop "Evaporation" here 2Drop "Condensation" here 3Drop "Precipitation" here 4Drop "Collection" here 🌧️ Precipitation ☀️ Evaporation 🏞️ Collection ☁️ Condensation Drag the steps into order 1 → 4.
-
Quick check🔍 Quick Brain Check Water vapour rising up from a warm puddle on a sunny day — which step of the water cycle is that? ☀️ Evaporation 🌧️ Precipitation 🏞️ Collection Tap the answer you think is right. Hint: think about water turning into invisible gas when it gets warm.
-
You did it!🎉💧🌈 You're a Water Cycle Expert! ☀️ Evaporation — the sun warms water and it rises as invisible vapour. ☁️ Condensation — vapour cools and forms tiny droplets that make clouds. 🌧️ Precipitation — heavy clouds drop the water as rain, snow or hail. 🏞️ Collection — water gathers in rivers, reservoirs and seas… then it all starts again! The water cycle never stops — it just keeps going round and round, sharing the same water with the whole world. 🌍 Great work today. Next time it rains in Singapore, you'll know exactly where that water came from! 🌧️💙
Frequently asked questions
- What are the four stages of the water cycle?
- The four main stages are evaporation (water turns to vapour and rises), condensation (vapour cools into droplets that form clouds), precipitation (droplets fall as rain, snow or hail), and collection (water gathers in rivers, lakes and seas). The cycle then repeats.
- Why does water evaporate?
- Heat from the sun warms water in seas, rivers and puddles until it changes into an invisible gas called water vapour. Because warm vapour is lighter than the surrounding air, it floats upward into the sky.
- How are clouds formed in the water cycle?
- High in the sky the air is cold, so rising water vapour cools down and turns back into tiny water droplets. Millions of these droplets crowd together to form a cloud — this step is called condensation.
- Is the rain we get today brand-new water?
- No. The Earth keeps recycling the same water over and over, so today's rain is made of water that has fallen, evaporated and condensed countless times before — possibly for millions of years.
- What is the difference between condensation and precipitation?
- Condensation is when water vapour cools and forms tiny droplets that build clouds. Precipitation happens later, when those droplets join up, become too heavy to stay in the cloud, and fall to the ground as rain, snow or hail.
More Sparks like this
Loved this Spark? Sign up free for AskBuddy AI tutoring, past-year papers, and unlimited Sparks.
Sign up free →