Please Give an Example

I was taking a ground school class for private pilots. During the session on weather, the instructor wanted to discuss the concept of sublimation, which is the act of going from a gas to a solid, while skipping the intermediate liquid stage.

As an example, he gave water vapor in the air condensing on a windshield to form ice. Wanting to see if the class had understood the concept, the instructor asked if anyone could provide an example of something that went straight from a solid to a gas.

He was expecting dry ice as the answer when one of the students blurted out, "Burritos!"

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