GRADE



Water is everywhere-even in the air!

When you get out of a pool, did you ever wonder where the water on your body goes as you begin to dry?

The water on your body changes to a gas called water vapor. Water turns into a gas through a process called evaporation. Heat makes water evaporate faster.

All air has some water vapor. Tropical rain forests and deserts are both hot. One is drier than the other. Where will water evaporate faster- in the rainforest or in the desert? Click on the picture that matches your answer.


Water evaporates faster with moving air. Warm, fast moving air makes water evaporate faster. These wet clothes are drying in the warm wind.

What happens to water vapor if it is in a cool place?

Water vapor may condense to liquid water as it cools. This is what happe ned to the water vapor from your mouth as it touched the mirror. The mirror was cold and so the water turned back into water droplets. Condense is the opposite of evaporate.

Dew is a form of condensed water vapor. You can see dew in the morning on your lawn. Water droplets formed overnite as it became cooler.

Frost may form as the air gets colder. You may have seen frost on the windshield of your car and your mom and dad scraping it off. Frost is ice crystals that form on objects. Look at the frost on this pine cone. (Link to crystals page)

to Chapter 3- Solids, Liquids, and Gases- 0h My!

Pages and gif animations written and designed by Sheila M. Estacio. Please send comments, praises, gripes, questions to sme2446@is2.nyu.edu