Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 16 - Reading Check Questions (Comprehension): 6

Answer

As a parcel of air rises, it encounters lower-pressure air at higher altitude, and expands. The temperature drops because it is cooled as it expands further.

Work Step by Step

This is discussed on page 305.
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