This activity will demonstrate the process of evaporation and the
factors which affect the rate of evaporation.
Time requirement: depends on your room environment. Could possibly take
longer than 1 hour.
- Source of water
- Eye dropper
- 4 plates
- Small fan
- Clock with second hand
- Place one drop of water onto each of the four plates.
- Place one plate in direct sunlight, one plate in the coolest
part of the room, and one plate down wind from the fan. On the
fourth plate, spread out the drop of water as far as possible. Place
that plate in an open area but not in direct sunlight.
- Record the temperature and time for the placement of each plate.
- Observe how long it takes each of the drops to evaporate (this could
take a while depending upon your room environment).
- How long did it take for each drop of water to evaporate?
- Which drop of water evaporated the fastest? What reasons do you have
- Which drop of water evaporated the slowest? What reasons do you have
- Considering what you have observed, how might you get a drop of
water to evaporate even faster? If time is available, you should try
- What happens to the water droplets after they evaporate?
Last updated: September 04, 1997
Joe Twicken /