Nature Example
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Why is the Grass Wet in the Morning?
Credit: Wikimedia Commons. Click here for the license
Have you ever walked on grass early in the morning and your shoes get soaked, even when it hasn't rained? That's dew!
How it works:
The air all around us is full of invisible water vapour (gas). Overnight, the ground, leaves, and spider webs get cold. When the water vapour in the warmer air touches these
cold surfaces, it cools down and condenses. It turns from a gas back into little liquid water droplets that you can see.
💡 Fun Facts
- Dew is an important source of water for small insects and birds to drink.
- You get more dew on clear nights because the ground gets colder than on cloudy nights (clouds act like a blanket).
- Frost is just like dew, but it happens when the grass is so cold (below 0°C) that the water vapour freezes instantly into a solid!