Data Sheet - Evaporation and Heat Engines

Questions

1. Which substance seems to have evaporated faster, water or alcohol? How can you tell?

 

2. When you waved your hands in the air, which felt cooler? Why did your hands feel cool?

 

3. Where did the heat come from that made the liquid evaporate from your hands?

 

4. Explain in your own words how the Drinking Bird keeps drinking.