[ 531 ] Physical Science GED ® TEST SCIENCE FLASH REVIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Jenny does an experiment with her friend to test her friend’s ability to hear loud (indicated by positives) or soft (indicated by negatives) sounds relative to a reference sound. The data are shown in the table. Sound Relative Intensity A ++ B – – C – D +++ E – – – Which sound was closest to the reference sound? Which graph can be described as decreasing force (F) as a non-linear function of displacement (x)? A B F C D F x x A. graph A B. graph B C. graph C D. graph D