Background Paragraph: The Figure below shows decibel levels of several different sounds. As decibel levels get higher, sound waves have greater intensity and sounds are louder. For every 10-decibel increase in the intensity of sound, loudness is 10 times greater. Therefore, a 30-decibel “quiet” room is 10 times louder than a 20-decibel whisper, and a 40-decibel light rainfall is 100 times louder than the whisper. High-decibel sounds are dangerous. They can damage the ears and cause loss of hearing. 
Story: Scientists are performing an audio experiment on a volunteer. Chris is sat in a chair, and two different sounds will be played for him as the scientists observe his reactions. Sound X has a high decibel level and sound Y has a lower decibel level.
Is sound X louder or quieter than sound Y? Is sound Y louder or quieter than sound X? Which sound has sound waves with less intensity? Which sound has sound waves with more intensity? Which sound is less likely to make Chris lose hearing? Which sound is more likely to make Chris lose hearing?