question: If the particles move together, the amplitude of the wave should
choices.text: increase decrease
choices.label: A B
para: The closer together the particles are, the greater the amplitude of the wave.
para_anno.effect_prop: amplitude of the wave
para_anno.cause_dir_str: closer
para_anno.effect_dir_str: greater
para_anno.cause_dir_sign: MORE
para_anno.effect_dir_sign: MORE
para_anno.cause_prop: close together the particles are
question_anno.more_effect_dir: increase
question_anno.less_effect_dir: decrease
question_anno.more_effect_prop: amplitude
question_anno.less_effect_prop: amplitude
question_anno.less_cause_dir: amplitude