Rafed English

Into Thin Air

Set a glass and a large plate side by side on a counter. Pour ¼ cup of water into the glass and ¼ cup of water onto the plate. Over the next day, watch what happens to the water.


This activity shows the effect of evaporation.

The water in both the glass and plate begins to disappear. The water seems to vanish as water molecules rise from the surface and into the air as a gas--in this case, water vapor. The water on the plate evaporates faster because it has a larger surface, which lets more water escape into the air.

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