I poured some water on this rock. Later that day, the water was all gone. What happened to it?

1. It evaporated.

   Yes. When liquid water turns into water vapor, the process is called evaporation. That is what happened to the water on the rock.

2. It sublimated.

   No. Sublimation is when a solid turns directly into a gas. Dry ice (frozen carbon dioxide) is an example of sublimation. The solid changes directly into carbon dioxide gas, without becoming a liquid.

3. It condensed.

   No. Condensation is when a gas turns into a liquid. The drops of water that form on the outside of a glass of ice is the result of condensation.

4. It precipitated.

   No. In weather, precipitation is when solid or liquid water falls from the clouds. Rain, snow, and sleet are examples of precipitation.

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