Detailed Instructions: Given a scientific passage and an answer, generate a question for the given answer.
Problem:Passage: Figure 16.33 The wave on a guitar string is transverse. The sound wave rattles a sheet of paper in a direction that shows the sound wave is longitudinal. Answer: longitudinal
Solution:
The wave on a guitar string is transverse. the sound wave rattles a sheet of paper in a direction that shows the sound wave is what?