Evaporation And Condensation At Home
Evaporation and condensation are the two everyday changes that move water between its liquid and gas forms. Evaporation is when liquid water gains heat and turns into an invisible gas called water vapour, which rises and mixes into the air — it is why puddles dry up after a Singapore downpour and why wet clothes dry faster on a warm, windy day. Condensation is the reverse: when water vapour in warm air touches a cold surface, it cools and turns back into tiny liquid droplets, which is why a cold can of drink 'sweats' and why morning dew and fog form.
Understanding these two processes helps children explain things they see at home and outdoors, from steam on the bathroom mirror to water beads on a cold window. The key ideas are that water does not disappear — it only changes state — and that heat drives evaporation while cooling drives condensation. Together they form part of the water cycle that recycles water through the environment.
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Water on the move💧 Where Did the Water Go? After a rainy afternoon in Singapore, puddles dry up. Press a cold can of drink and it gets wet on the outside — but you never poured water on it! Water is sneaky. It can disappear into the air and appear again. Today you'll become a Water Detective and learn the two big secrets: evaporation and condensation. 🔍💧☀️ Tap Next to start your first case!
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Evaporation☀️ Secret 1: Evaporation Evaporation is when liquid water gets warm and turns into an invisible gas called water vapour. The vapour floats up into the air, so the water seems to vanish. Try it! Tap the sun to heat the puddle and watch the water escape. ↑ ↑ ↑ ☀️ Shine the sun
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Evaporation at home🏠 Spot Evaporation at Home Evaporation happens around you every day — especially when things are warm, windy, or spread out. Tap each card to reveal the answer. 🧺 Wet clothes on the line dry up The sun and wind turn the water into vapour. Spread-out clothes dry faster! 🌧️ A puddle disappears after rain Warm sunshine evaporates the puddle into the air. 💇 Wet hair dries by itself Body heat and warm air make the water evaporate. Reveal all three cards to crack the case. 🔍
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Condensation🥤 Secret 2: Condensation Condensation is the opposite. When invisible water vapour in the warm air touches something cold, it cools down and turns back into tiny water droplets you can see. A cold drink has fog and droplets on the outside. Tap the droplets on the glass to collect them! cold drink 🧊 Droplets collected: 0 / 5
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Detective sort🧠 Detective Sort Drag each clue into the right box. Is it water leaving (evaporation) or water appearing (condensation)? Tip: on a tablet, press a clue then press a box. 🌊 Sea water dries in the sun 🪞 Foggy bathroom mirror 🍜 Steam rises from hot soup 🥶 Water on a cold window ☀️ Evaporation 🥤 Condensation
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Two opposites🔁 They Are Opposites Evaporation and condensation are a team. One sends water UP into the air, the other brings it back DOWN as droplets. Liquid 💧 Vapour ☁️ evaporation ☀️→ ← condensation 🥶 Quick check — finish the sentence: Steam from a hot kettle hitting a cold spoon and turning to water drops is… Evaporation Condensation
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You did it!🎉 Case Closed, Detective! You learned how water moves between liquid and gas: ☀️ Evaporation Warm liquid water → invisible vapour. Water leaves into the air. 🥶 Condensation Vapour touches something cold → droplets you can see. Water comes back. 🏠 Find them at home: drying laundry (evaporation) and a foggy mirror after a hot shower (condensation). Great work — you can now explain where water goes and how it comes back! 🌟
Frequently asked questions
- What is the difference between evaporation and condensation?
- Evaporation is liquid water turning into invisible water vapour when it is heated, so water leaves into the air. Condensation is the opposite — water vapour cooling down and turning back into liquid droplets. One sends water up as gas, the other brings it back as liquid.
- Why does a cold drink can get wet on the outside?
- The cold surface of the can cools the warm, moist air around it. The water vapour in that air condenses into tiny liquid droplets on the can, so the outside gets wet even though no water was poured on it.
- Where can my child see evaporation and condensation at home?
- Evaporation happens when wet clothes dry, puddles disappear, or a wet floor dries up — especially when it is warm or windy. Condensation shows up as fog on a bathroom mirror, water beads on a cold window, or droplets on a chilled bottle.
- Does evaporation only happen when water boils?
- No. Water evaporates at everyday temperatures, not just when boiling. It happens faster when the water is warm, spread out over a large area, or when there is moving air such as a fan or breeze.
- Is the water gone when a puddle dries up?
- No, the water is not destroyed. It changes into invisible water vapour and floats up into the air. Later it can condense back into liquid as clouds, dew, or rain — this is part of the water cycle.
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