Rhonda watched a video taken by a camera that was lifted into the upper atmosphere by a weather balloon. She saw the balloon pop when it reached a certain height. Afterward, Rhonda wondered what effect the air pressure at high altitudes has on the volume of gas in balloons.What scientific practice is Rhonda performing?

Rhonda observed the balloon pop and then wondered what effect high-altitude air pressure has on balloon volume. Forming a question based on an observation is the scientific practice of asking a question. She has not yet performed an investigation or communicated results.

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